Pub Date : 2020-10-30DOI: 10.12086/OEE.2020.200315
T. Tao, Jiaguang Ma, Hongbin Chen, Cheng-yu Fu, Yang Hu, Ren Ge, Wenshu Yang, Qi Bo, Cao Lei, Mengwei Zhang, Qiliang Bao, Tan Yi, Yongmei Huang, M. Yao, Wang Qiang
Precision control methodologies are necessary to implement high-precision optical-electric tracking performance, and depend on structural configuration, actuator drive, sensors, control algorithm and load platform. However, the optical-electric tracking system is facing with the three key technologies, disturbance rejection, target tracking and distributed intelligent coordination, both foundation platform and moving platform. In this paper, precision control methodologies aiming at the above several key technical problems are summarized, and the research results of some advanced and frontier control technologies are presented and the main ideas of the future key research directions are pointed out. In addition, the research progress and hotspot of disturbance rejection technology from three aspects of precision drive, inertial stability as well as vibration control according to the different mechanism of disturbance influence are introduced, and the integrated technology of vibration and direction based on Stewart platform is an important technical direction of space optical-electric tracking system are emphasized. The composite axis control system is still the most effective fundamental way to improve the target tracking, and the most essential technical problem is to improve the closed-loop performance of the tip-tilt mirror system in precision tracking. It has to be mentioned that observer control is especially suitable for composite axis optical-electric tracking system, especially the observer technology based solely on error, and the development of three or more advanced composite shaft systems has to pay special attention to the application of high performance motors. Eventually, it is proposed that multi-intelligence cooperative optoelectronic system is the key development direction in the field of optical-electric tracking in the future, and it is necessary for the system to develop multi-agent cooperative positioning, formation control and load platform integration and other precise control technologies.
{"title":"A review on precision control methodologies for optical-electric tracking control system","authors":"T. Tao, Jiaguang Ma, Hongbin Chen, Cheng-yu Fu, Yang Hu, Ren Ge, Wenshu Yang, Qi Bo, Cao Lei, Mengwei Zhang, Qiliang Bao, Tan Yi, Yongmei Huang, M. Yao, Wang Qiang","doi":"10.12086/OEE.2020.200315","DOIUrl":"https://doi.org/10.12086/OEE.2020.200315","url":null,"abstract":"Precision control methodologies are necessary to implement high-precision optical-electric tracking performance, and depend on structural configuration, actuator drive, sensors, control algorithm and load platform. However, the optical-electric tracking system is facing with the three key technologies, disturbance rejection, target tracking and distributed intelligent coordination, both foundation platform and moving platform. In this paper, precision control methodologies aiming at the above several key technical problems are summarized, and the research results of some advanced and frontier control technologies are presented and the main ideas of the future key research directions are pointed out. In addition, the research progress and hotspot of disturbance rejection technology from three aspects of precision drive, inertial stability as well as vibration control according to the different mechanism of disturbance influence are introduced, and the integrated technology of vibration and direction based on Stewart platform is an important technical direction of space optical-electric tracking system are emphasized. The composite axis control system is still the most effective fundamental way to improve the target tracking, and the most essential technical problem is to improve the closed-loop performance of the tip-tilt mirror system in precision tracking. It has to be mentioned that observer control is especially suitable for composite axis optical-electric tracking system, especially the observer technology based solely on error, and the development of three or more advanced composite shaft systems has to pay special attention to the application of high performance motors. Eventually, it is proposed that multi-intelligence cooperative optoelectronic system is the key development direction in the field of optical-electric tracking in the future, and it is necessary for the system to develop multi-agent cooperative positioning, formation control and load platform integration and other precise control technologies.","PeriodicalId":39552,"journal":{"name":"Guangdian Gongcheng/Opto-Electronic Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74051334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-30DOI: 10.12086/OEE.2020.200237
Shen Yijia, Xie Xin, Pu Mingbo, Z. Fei, M. Xiaoliang, Guo Yinghui, Li Xiong, Wang Changtao, Luo Xian-gang
Metalens is considered as one of the most promising planar optical devices composed of the metasurface, but it is usually difficult to realize full-color imaging and display due to the narrow working bandwidth and large chromatic aberration. In this paper, a phase-controlled transmissive metalens is designed to realize the broadband achromatic focusing within 400 nm650 nm, and the average focusing efficiency is about 29% at the focal plane within the bandwidth range. The titanium dioxide (TiO2) dielectric nanopillar with low loss and high refractive index as a truncated waveguide can control the propagation phase in the visible. At the same time, we analyze the dispersion modulation mechanism which merges the geometric and propagation phases, and the particle swarm optimization (PSO) algorithm is used to optimize the phase response database, and accomplish the phase matching between the ideal and actual wavefronts. The proposed broadband achromatic devices may broaden the applications of metalens in micro-imaging, computer vision, and machine vision.
{"title":"Achromatic metalens based on coordinative modulation of propagation phase and geometric phase","authors":"Shen Yijia, Xie Xin, Pu Mingbo, Z. Fei, M. Xiaoliang, Guo Yinghui, Li Xiong, Wang Changtao, Luo Xian-gang","doi":"10.12086/OEE.2020.200237","DOIUrl":"https://doi.org/10.12086/OEE.2020.200237","url":null,"abstract":"Metalens is considered as one of the most promising planar optical devices composed of the metasurface, but it is usually difficult to realize full-color imaging and display due to the narrow working bandwidth and large chromatic aberration. In this paper, a phase-controlled transmissive metalens is designed to realize the broadband achromatic focusing within 400 nm650 nm, and the average focusing efficiency is about 29% at the focal plane within the bandwidth range. The titanium dioxide (TiO2) dielectric nanopillar with low loss and high refractive index as a truncated waveguide can control the propagation phase in the visible. At the same time, we analyze the dispersion modulation mechanism which merges the geometric and propagation phases, and the particle swarm optimization (PSO) algorithm is used to optimize the phase response database, and accomplish the phase matching between the ideal and actual wavefronts. The proposed broadband achromatic devices may broaden the applications of metalens in micro-imaging, computer vision, and machine vision.","PeriodicalId":39552,"journal":{"name":"Guangdian Gongcheng/Opto-Electronic Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80615780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-30DOI: 10.12086/OEE.2020.200337
Guan Chunlin, Zhang Xiaojun, Deng Jianming, Xue Lixia, Z. Yaoping, Zhou Hong, Fan Xinlong, Cheng Lin, Fan Junqi, He Gang, Mou Jinbo, Long Guoyun
Deformable mirror is the core component of the adaptive optics system and the primary research object for the research of adaptive optics technology. In this review, the research history of adaptive optics technology, especially the deformable mirror technologies of IOE is reviewed and the early development of our deformable mirror technology is briefly described. The application of the deformable mirror in the inertial confinement fusion (ICF) system of China is introduced and the typical multi-channel deformable mirror technology and application results in the field of astronomical optical observation is also described. Then we introduce the application of compact deformable mirror in biomedical research. At last, some new research directions of deformable mirror technology are revealed.
{"title":"Deformable mirror technologies at Institute of Optics and Electronics, Chinese Academy of Sciences","authors":"Guan Chunlin, Zhang Xiaojun, Deng Jianming, Xue Lixia, Z. Yaoping, Zhou Hong, Fan Xinlong, Cheng Lin, Fan Junqi, He Gang, Mou Jinbo, Long Guoyun","doi":"10.12086/OEE.2020.200337","DOIUrl":"https://doi.org/10.12086/OEE.2020.200337","url":null,"abstract":"Deformable mirror is the core component of the adaptive optics system and the primary research object for the research of adaptive optics technology. In this review, the research history of adaptive optics technology, especially the deformable mirror technologies of IOE is reviewed and the early development of our deformable mirror technology is briefly described. The application of the deformable mirror in the inertial confinement fusion (ICF) system of China is introduced and the typical multi-channel deformable mirror technology and application results in the field of astronomical optical observation is also described. Then we introduce the application of compact deformable mirror in biomedical research. At last, some new research directions of deformable mirror technology are revealed.","PeriodicalId":39552,"journal":{"name":"Guangdian Gongcheng/Opto-Electronic Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76550876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-30DOI: 10.12086/OEE.2020.200338
Feng Chang, Congzheng Wang, Jianping Zhao, Cheng Yong, Cai Gen, Dou Pu, L. Libin
To introduce and analyze the development history and research status of operating robots for nuclear environment at home and abroad, the common system structure and classification based on main functions for operating robots for nuclear environment are summarized. Based on the application requirements of operating robots for nuclear environment, it is concluded that the key technologies in urgent need of breakthrough for nuclear robots are radiation reinforcement, communication method, photoelectric detection, intelligent control technology, etc. Finally, with the increasing scale of China's nuclear industry and the increasing demand for safety assurance, the application scenarios of operating robots for nuclear environment are condensed, and the future development trend of operating robots for nuclear environment is predicted.
{"title":"Research status and key technologies analysis of operating robots for nuclear environment","authors":"Feng Chang, Congzheng Wang, Jianping Zhao, Cheng Yong, Cai Gen, Dou Pu, L. Libin","doi":"10.12086/OEE.2020.200338","DOIUrl":"https://doi.org/10.12086/OEE.2020.200338","url":null,"abstract":"To introduce and analyze the development history and research status of operating robots for nuclear environment at home and abroad, the common system structure and classification based on main functions for operating robots for nuclear environment are summarized. Based on the application requirements of operating robots for nuclear environment, it is concluded that the key technologies in urgent need of breakthrough for nuclear robots are radiation reinforcement, communication method, photoelectric detection, intelligent control technology, etc. Finally, with the increasing scale of China's nuclear industry and the increasing demand for safety assurance, the application scenarios of operating robots for nuclear environment are condensed, and the future development trend of operating robots for nuclear environment is predicted.","PeriodicalId":39552,"journal":{"name":"Guangdian Gongcheng/Opto-Electronic Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78259091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-29DOI: 10.12086/OEE.2020.200344
L. Ende, Yang Zeping, Guan Chunlin, Zhang Xiaojun, Fan Muwen, Shi Ningping, Wei Ling, Long Guoyun
In the high-power laser system for inertial confinement fusion, wavefront control is one of the key technologies for the laser system to ensure it operates safely and reaches the beam quality criteria. In this article, the development of the wavefront control technology from its first being putting forward for the ICF laser system to its application in the latest ICF laser system in China was introduced. During the development of the ICF facilities, the wavefront control methods are varying to satisfy the varied demands promoted by these facilities. Based on different facilities, the methods and the application results are illustrated, including the climbing wavefront method for far-field spot optimization, the full-facility wavefront control method based on the data fusion acquired from two wavefront sensors, and the full-system wavefront control method with bi-deformed mirrors in the rotation chamber laser structure.
{"title":"Wavefront control technology for ICF facility in China","authors":"L. Ende, Yang Zeping, Guan Chunlin, Zhang Xiaojun, Fan Muwen, Shi Ningping, Wei Ling, Long Guoyun","doi":"10.12086/OEE.2020.200344","DOIUrl":"https://doi.org/10.12086/OEE.2020.200344","url":null,"abstract":"In the high-power laser system for inertial confinement fusion, wavefront control is one of the key technologies for the laser system to ensure it operates safely and reaches the beam quality criteria. In this article, the development of the wavefront control technology from its first being putting forward for the ICF laser system to its application in the latest ICF laser system in China was introduced. During the development of the ICF facilities, the wavefront control methods are varying to satisfy the varied demands promoted by these facilities. Based on different facilities, the methods and the application results are illustrated, including the climbing wavefront method for far-field spot optimization, the full-facility wavefront control method based on the data fusion acquired from two wavefront sensors, and the full-system wavefront control method with bi-deformed mirrors in the rotation chamber laser structure.","PeriodicalId":39552,"journal":{"name":"Guangdian Gongcheng/Opto-Electronic Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88582957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-17DOI: 10.12086/OEE.2020.190634
Wang Xin, Xudong Zhang, Zhang Jun, Sun Rui
Image captured in foggy weather often exhibits low contrast and poor image quality, which may have a negative impact on computer vision applications. Aiming at these problems, we propose an image dehazing algorithm by combining light field technology with atmospheric scattering model. Firstly, taking the advantages of capturing multi-view information from light field camera is used to extracting defocus cues and correspondence cues, which are used to estimating the depth information of hazy images, and use the obtained depth information to calculating the scene’s initial transmission. Then use scene depth information to build a new weight function, and combined it with 1-norm context regularization to optimizing the initial transmission map iteratively. Finally, the central perspective image of hazy light field images is dehazed using atmospheric scattering model to obtain the final dehazed images. Experimental results on synthetic hazy images and real hazy images demonstrate that, compared to existing single image dehazing algorithms, the peak signal to noise ratio get 2 dB improvement and the structural similarity raise about 0.04. Moreover, our approach preserves more fine structural information of images and has faithful color fidelity, thus yielding a superior image dehazing result.
{"title":"Image dehazing algorithm by combining light field multi-cues and atmospheric scattering model","authors":"Wang Xin, Xudong Zhang, Zhang Jun, Sun Rui","doi":"10.12086/OEE.2020.190634","DOIUrl":"https://doi.org/10.12086/OEE.2020.190634","url":null,"abstract":"Image captured in foggy weather often exhibits low contrast and poor image quality, which may have a negative impact on computer vision applications. Aiming at these problems, we propose an image dehazing algorithm by combining light field technology with atmospheric scattering model. Firstly, taking the advantages of capturing multi-view information from light field camera is used to extracting defocus cues and correspondence cues, which are used to estimating the depth information of hazy images, and use the obtained depth information to calculating the scene’s initial transmission. Then use scene depth information to build a new weight function, and combined it with 1-norm context regularization to optimizing the initial transmission map iteratively. Finally, the central perspective image of hazy light field images is dehazed using atmospheric scattering model to obtain the final dehazed images. Experimental results on synthetic hazy images and real hazy images demonstrate that, compared to existing single image dehazing algorithms, the peak signal to noise ratio get 2 dB improvement and the structural similarity raise about 0.04. Moreover, our approach preserves more fine structural information of images and has faithful color fidelity, thus yielding a superior image dehazing result.","PeriodicalId":39552,"journal":{"name":"Guangdian Gongcheng/Opto-Electronic Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78834479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-17DOI: 10.12086/OEE.2020.190547
Niu Shuaixu, Jiang Jing, T. Tao, Yang Tao, Bao Qi-liang
Vibration rejection is a key technology of telescopes with stable accuracy of rad level. Due to the low-rate sample and large time delay of the image sensor, the conventional control loop cannot well mitigate vibrations, especially the wideband vibrations with wide range and large energy. On the concept of optimal force design, an improved wideband vibration rejection method based on Youla parameterization is proposed to mitigate vibrations for improving the closed-loop performance of telescopes. In the case that the disturbances frequency can be obtained, this method can mitigate wideband vibrations by designing an appropriate Q-filter to accommodate to the wideband vibrations. The simulation and experimental results show that the proposed method greatly improves the wideband vibration rejection ability and closed-loop performance of the system compared with the traditional proportional-integral control method. In addition, this method can be extended to many engineering projects because of its low dependence and easy implementation.
{"title":"Optimal design of Youla controller for vibration rejection in telescopes","authors":"Niu Shuaixu, Jiang Jing, T. Tao, Yang Tao, Bao Qi-liang","doi":"10.12086/OEE.2020.190547","DOIUrl":"https://doi.org/10.12086/OEE.2020.190547","url":null,"abstract":"Vibration rejection is a key technology of telescopes with stable accuracy of rad level. Due to the low-rate sample and large time delay of the image sensor, the conventional control loop cannot well mitigate vibrations, especially the wideband vibrations with wide range and large energy. On the concept of optimal force design, an improved wideband vibration rejection method based on Youla parameterization is proposed to mitigate vibrations for improving the closed-loop performance of telescopes. In the case that the disturbances frequency can be obtained, this method can mitigate wideband vibrations by designing an appropriate Q-filter to accommodate to the wideband vibrations. The simulation and experimental results show that the proposed method greatly improves the wideband vibration rejection ability and closed-loop performance of the system compared with the traditional proportional-integral control method. In addition, this method can be extended to many engineering projects because of its low dependence and easy implementation.","PeriodicalId":39552,"journal":{"name":"Guangdian Gongcheng/Opto-Electronic Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83264819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-17DOI: 10.12086/OEE.2020.190485
L. Xiaoming, Zhang Tianshuo, Z. Jiaqi, Li Xiang, Z. Lizhong
The main function of the laser communication large-caliber ground optical transceiver is to establish a communication link with the satellite to realize data transmission between the satellite and the ground station. The 600 mm microcrystalline primary mirror of one laser communication station is heavy, and its working angle changes constantly. In order to decrease the mirror surface error, the support system not only has a 9-pose axial support structure but also simultaneously balances the radial component of gravity of the primary mirror at its working angle by using a radial support structure. Flexible lateral support structures have large size and stress, so it is not suit for the mirror that works in a wide range of rotation. The paper researches the lateral support structure with a mercury band and central shaft, and analyses the impact of mercury band parameters on the surface error. The designed lateral structure has small size and improves the surface quality of the mirror. The measured values of PV and RMS are smaller than λ/5 and λ/37, respectively. These result shows that the designed lateral support structure reaches the design purpose and satisfies the requirements.
{"title":"Lateral support structure for 600 mm primary mirror of laser communication","authors":"L. Xiaoming, Zhang Tianshuo, Z. Jiaqi, Li Xiang, Z. Lizhong","doi":"10.12086/OEE.2020.190485","DOIUrl":"https://doi.org/10.12086/OEE.2020.190485","url":null,"abstract":"The main function of the laser communication large-caliber ground optical transceiver is to establish a communication link with the satellite to realize data transmission between the satellite and the ground station. The 600 mm microcrystalline primary mirror of one laser communication station is heavy, and its working angle changes constantly. In order to decrease the mirror surface error, the support system not only has a 9-pose axial support structure but also simultaneously balances the radial component of gravity of the primary mirror at its working angle by using a radial support structure. Flexible lateral support structures have large size and stress, so it is not suit for the mirror that works in a wide range of rotation. The paper researches the lateral support structure with a mercury band and central shaft, and analyses the impact of mercury band parameters on the surface error. The designed lateral structure has small size and improves the surface quality of the mirror. The measured values of PV and RMS are smaller than λ/5 and λ/37, respectively. These result shows that the designed lateral support structure reaches the design purpose and satisfies the requirements.","PeriodicalId":39552,"journal":{"name":"Guangdian Gongcheng/Opto-Electronic Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87409147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-17DOI: 10.12086/OEE.2020.190451
Sun Yuhao, Duan Fajie, Jiang Jiajia, Fu Xiao, Zhang Cong, Li Wenzheng
The field calibration of straightness is an important method to ensure the accuracy of on-line measurement. Based on the transceiver integrated laser five-degree-of-freedom measurement structure, the field calibration model was established aiming at the Abbe error, and the imaging error of retroreflector caused by the calibration platform. According to the calibration model and the angle measurement results of the five-degree-of-freedom measuring device, a compensation method of straightness calibration errors was proposed. Experimental results showed that the calibration coefficient error was within 0.2% when using the calibration method, and the calibration errors of straightness were effectively reduced. The calibration method made the error of calibration coefficient reduce to less than 0.2%, and effectively improved the accuracy of straightness field calibration.
{"title":"Research on field calibration method of straightness in five-degree-of-freedom measurement","authors":"Sun Yuhao, Duan Fajie, Jiang Jiajia, Fu Xiao, Zhang Cong, Li Wenzheng","doi":"10.12086/OEE.2020.190451","DOIUrl":"https://doi.org/10.12086/OEE.2020.190451","url":null,"abstract":"The field calibration of straightness is an important method to ensure the accuracy of on-line measurement. Based on the transceiver integrated laser five-degree-of-freedom measurement structure, the field calibration model was established aiming at the Abbe error, and the imaging error of retroreflector caused by the calibration platform. According to the calibration model and the angle measurement results of the five-degree-of-freedom measuring device, a compensation method of straightness calibration errors was proposed. Experimental results showed that the calibration coefficient error was within 0.2% when using the calibration method, and the calibration errors of straightness were effectively reduced. The calibration method made the error of calibration coefficient reduce to less than 0.2%, and effectively improved the accuracy of straightness field calibration.","PeriodicalId":39552,"journal":{"name":"Guangdian Gongcheng/Opto-Electronic Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77813507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-17DOI: 10.12086/OEE.2020.190540
Zhu Qing, Li Yourong, Jiang Zhipeng, Zheng Jihong
In this paper, the electrical impedance spectroscopy characteristics of polymer dispersed liquid crystal (PDLC) doped with nano-zinc oxide rods and its sensing applications are studied. Polymer dispersed liquid crystal films have the characteristics of stable structure, resistance to mechanical impact and easy preparation. By doping nano-zinc oxide rods into the material, the sensing function of polar molecules such as ethanol gas can be realized through the analysis of electrical impedance spectroscopy. In this paper, the complex impedance spectra of thin films encountering ethanol molecules are studied and analyzed through comparative experiments. In addition, the electrochemical equivalent circuit was established and analyzed. It was found that the film could sensitively and effectively realize the sensing function of the ethanol molecules. The sensitivity and response time of the sensor are further analyzed and studied. The experimental study and analysis show that nano-zinc oxide rod doped PDLC film is expected to be used as a gas sensor for detecting polarity of ethanol and other materials. It has the advantages of high sensitivity, stable structure, high repeatability, and easy fabrication.
{"title":"Impedance spectroscopy characteristics of nano ZnO doped liquid crystal/polymer film","authors":"Zhu Qing, Li Yourong, Jiang Zhipeng, Zheng Jihong","doi":"10.12086/OEE.2020.190540","DOIUrl":"https://doi.org/10.12086/OEE.2020.190540","url":null,"abstract":"In this paper, the electrical impedance spectroscopy characteristics of polymer dispersed liquid crystal (PDLC) doped with nano-zinc oxide rods and its sensing applications are studied. Polymer dispersed liquid crystal films have the characteristics of stable structure, resistance to mechanical impact and easy preparation. By doping nano-zinc oxide rods into the material, the sensing function of polar molecules such as ethanol gas can be realized through the analysis of electrical impedance spectroscopy. In this paper, the complex impedance spectra of thin films encountering ethanol molecules are studied and analyzed through comparative experiments. In addition, the electrochemical equivalent circuit was established and analyzed. It was found that the film could sensitively and effectively realize the sensing function of the ethanol molecules. The sensitivity and response time of the sensor are further analyzed and studied. The experimental study and analysis show that nano-zinc oxide rod doped PDLC film is expected to be used as a gas sensor for detecting polarity of ethanol and other materials. It has the advantages of high sensitivity, stable structure, high repeatability, and easy fabrication.","PeriodicalId":39552,"journal":{"name":"Guangdian Gongcheng/Opto-Electronic Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84015086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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