Pub Date : 2017-05-01DOI: 10.1109/ICMSC.2017.7959497
Linqi Zhang, Jianan Wu, Sujie Liu, Zean Zhen, Xin He
Based on the "H" type quadrotor prototype, a 6DOF mathematical model is developed by the Newton-Euler method in order to proceed the research of position and attitude control of complex nonlinear problems. Then, in this context equivalent sliding mode controllers are designed to solve the altitude and attitude control of the quadrotor in addition that PID controllers are designed for the horizontal position control. At last, simulations are carried out under MATLAB/Simulink simulation environment. The simulation results illustrate that the designed controllers effectively realize the control of the quadrotor revealing good tracking ability and anti — interference ability.
{"title":"Equivalent sliding mode controller design based on \"H\" type quadrotor","authors":"Linqi Zhang, Jianan Wu, Sujie Liu, Zean Zhen, Xin He","doi":"10.1109/ICMSC.2017.7959497","DOIUrl":"https://doi.org/10.1109/ICMSC.2017.7959497","url":null,"abstract":"Based on the \"H\" type quadrotor prototype, a 6DOF mathematical model is developed by the Newton-Euler method in order to proceed the research of position and attitude control of complex nonlinear problems. Then, in this context equivalent sliding mode controllers are designed to solve the altitude and attitude control of the quadrotor in addition that PID controllers are designed for the horizontal position control. At last, simulations are carried out under MATLAB/Simulink simulation environment. The simulation results illustrate that the designed controllers effectively realize the control of the quadrotor revealing good tracking ability and anti — interference ability.","PeriodicalId":356055,"journal":{"name":"2017 International Conference on Mechanical, System and Control Engineering (ICMSC)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126262967","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 : 2017-05-01DOI: 10.1109/ICMSC.2017.7959493
V. Frolov
The paper investigates the influence of the ground on the airfoil lift. The Numerical Analytic Method (NAM) and the Discrete Vortices Method (DVM) are developed for simulating the flow around an airfoil when it is in the close proximity to the ground. The author proposes the NAM for modeling the flow around the airfoil near the ground and analyzes two approaches to solving the problem of Wing-in- Ground (WIG). The first method is based on the simulation of the ground surface, while the second one uses the reflection method. It has been shown that the increasing in the relative airfoil thickness reduces the positive WIG lift effect. It is also established that there is an optimal airfoil angle of attack at which the maximum lift occurs near the ground.
{"title":"Ground effect on lift of thick wing airfoil","authors":"V. Frolov","doi":"10.1109/ICMSC.2017.7959493","DOIUrl":"https://doi.org/10.1109/ICMSC.2017.7959493","url":null,"abstract":"The paper investigates the influence of the ground on the airfoil lift. The Numerical Analytic Method (NAM) and the Discrete Vortices Method (DVM) are developed for simulating the flow around an airfoil when it is in the close proximity to the ground. The author proposes the NAM for modeling the flow around the airfoil near the ground and analyzes two approaches to solving the problem of Wing-in- Ground (WIG). The first method is based on the simulation of the ground surface, while the second one uses the reflection method. It has been shown that the increasing in the relative airfoil thickness reduces the positive WIG lift effect. It is also established that there is an optimal airfoil angle of attack at which the maximum lift occurs near the ground.","PeriodicalId":356055,"journal":{"name":"2017 International Conference on Mechanical, System and Control Engineering (ICMSC)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132066050","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 : 2017-05-01DOI: 10.1109/ICMSC.2017.7959481
Hu Junke, Chang Zhen
This paper comprehensively introduces a pressure buffering approach of Active Scraper's lifting cylinder, with special analysis on the shortcomings of Rexroth RSM2 Stability Module. This paper also puts forward a new type of Pressure Stablizing Control Method of Hydraulic Lifting Cylinder, accompanied by simulation analyses and experiment researches on working modes of this system. The result shows that the new Pressure Stablizing Control Method can effectively reduce the pressure of the hydraulic system when load mutation causes impact, thus it protects the hydraulic cylinder, so as to prolong the service life of hydraulic components.
{"title":"Research on lifting cylinder's pressure stability control method of active scraper","authors":"Hu Junke, Chang Zhen","doi":"10.1109/ICMSC.2017.7959481","DOIUrl":"https://doi.org/10.1109/ICMSC.2017.7959481","url":null,"abstract":"This paper comprehensively introduces a pressure buffering approach of Active Scraper's lifting cylinder, with special analysis on the shortcomings of Rexroth RSM2 Stability Module. This paper also puts forward a new type of Pressure Stablizing Control Method of Hydraulic Lifting Cylinder, accompanied by simulation analyses and experiment researches on working modes of this system. The result shows that the new Pressure Stablizing Control Method can effectively reduce the pressure of the hydraulic system when load mutation causes impact, thus it protects the hydraulic cylinder, so as to prolong the service life of hydraulic components.","PeriodicalId":356055,"journal":{"name":"2017 International Conference on Mechanical, System and Control Engineering (ICMSC)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134413951","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 : 2017-05-01DOI: 10.1109/ICMSC.2017.7959444
Tao He, Kun Yu, Lang Chen, Kexue Lai, Liangen Yang, Xuanze Wang, Zhongsheng Zhai
Complex mechanical parts have characteristics of irregularity and certain statistical self-similarity, which can be described by fractal dimension. And the values of their fractal dimension can be used as an measurement to classify and recognize the mechanical parts. In addition, the values can guide robots to grab parts. However, the image obtained by a vision system, which contains part images main image and image background will affect the calculation of fractal dimension of main images. In order to solve the problem, an improved differential box-counting method is designed in this paper. The fractal dimension of part images which has been cut and rotated can be calculated using this differential box- counting method. The experimental result shows that the improved differential box-counting method can calculate the fractal dimension of different size-length images, and the values are more stable. The improved method solves the problem that traditional algorithm can only calculate the fractal dimension of image which side length is integer power of 2.
{"title":"Image classification and recognition method to mechanical parts based on fractal dimension","authors":"Tao He, Kun Yu, Lang Chen, Kexue Lai, Liangen Yang, Xuanze Wang, Zhongsheng Zhai","doi":"10.1109/ICMSC.2017.7959444","DOIUrl":"https://doi.org/10.1109/ICMSC.2017.7959444","url":null,"abstract":"Complex mechanical parts have characteristics of irregularity and certain statistical self-similarity, which can be described by fractal dimension. And the values of their fractal dimension can be used as an measurement to classify and recognize the mechanical parts. In addition, the values can guide robots to grab parts. However, the image obtained by a vision system, which contains part images main image and image background will affect the calculation of fractal dimension of main images. In order to solve the problem, an improved differential box-counting method is designed in this paper. The fractal dimension of part images which has been cut and rotated can be calculated using this differential box- counting method. The experimental result shows that the improved differential box-counting method can calculate the fractal dimension of different size-length images, and the values are more stable. The improved method solves the problem that traditional algorithm can only calculate the fractal dimension of image which side length is integer power of 2.","PeriodicalId":356055,"journal":{"name":"2017 International Conference on Mechanical, System and Control Engineering (ICMSC)","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115429838","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 : 2017-05-01DOI: 10.1109/ICMSC.2017.7959454
Chen Xiong, Zhou Changsheng, Zhu Min, O. Musa
The differences between finite-rate and eddy- dissipation models for simulating unsteady reacting swirling flow through solid-fuel ramjet engine are investigated. An in-house code has been developed to solve governing equations of compressible flow field with chemical reactions. The code is verified, validated, and then used to perform unsteady simulations on solid-fuel ramjet engine with high-density polyethylene. The results showed that both models are act similar, however, finite-rate model is preferred in such combustors with non-premixed flames (diffusion flames) over eddy-dissipation model.
{"title":"Combustion modeling of unsteady reacting swirling flow in solid fuel ramjet","authors":"Chen Xiong, Zhou Changsheng, Zhu Min, O. Musa","doi":"10.1109/ICMSC.2017.7959454","DOIUrl":"https://doi.org/10.1109/ICMSC.2017.7959454","url":null,"abstract":"The differences between finite-rate and eddy- dissipation models for simulating unsteady reacting swirling flow through solid-fuel ramjet engine are investigated. An in-house code has been developed to solve governing equations of compressible flow field with chemical reactions. The code is verified, validated, and then used to perform unsteady simulations on solid-fuel ramjet engine with high-density polyethylene. The results showed that both models are act similar, however, finite-rate model is preferred in such combustors with non-premixed flames (diffusion flames) over eddy-dissipation model.","PeriodicalId":356055,"journal":{"name":"2017 International Conference on Mechanical, System and Control Engineering (ICMSC)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114575132","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 : 2017-05-01DOI: 10.1109/ICMSC.2017.7959455
A. Dovgyallo, S. Nekrasova, A. Vorobyev
An analytical and CFD method are used to investigate the oscillating flow and friction coefficient in the pulse tube of the Thermal Lag Engine (TLE). The coefficient of friction reciprocating gas flow in the tube and the resulting phase shift angle between the axial velocity of the oscillating flow and gas pressure were obtained using analytical and CFD methods. The efficiency of a pulse tube has been proposed, which can be used to describe the loss of pulse tube quantitatively. The resulting phase angle shift between gas velocity and pressure is obtained analytically with account of friction in oscillating flow in a tube. The velocity profiles and phase angle are in good agreement with the CFD simulation results.
{"title":"Analytical and CFD investigation of oscillating flow in pulse tube of thermal lag engine","authors":"A. Dovgyallo, S. Nekrasova, A. Vorobyev","doi":"10.1109/ICMSC.2017.7959455","DOIUrl":"https://doi.org/10.1109/ICMSC.2017.7959455","url":null,"abstract":"An analytical and CFD method are used to investigate the oscillating flow and friction coefficient in the pulse tube of the Thermal Lag Engine (TLE). The coefficient of friction reciprocating gas flow in the tube and the resulting phase shift angle between the axial velocity of the oscillating flow and gas pressure were obtained using analytical and CFD methods. The efficiency of a pulse tube has been proposed, which can be used to describe the loss of pulse tube quantitatively. The resulting phase angle shift between gas velocity and pressure is obtained analytically with account of friction in oscillating flow in a tube. The velocity profiles and phase angle are in good agreement with the CFD simulation results.","PeriodicalId":356055,"journal":{"name":"2017 International Conference on Mechanical, System and Control Engineering (ICMSC)","volume":"153 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116054142","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 : 2017-05-01DOI: 10.1109/ICMSC.2017.7959447
Sepehr Heidari, A. Zabihollah, M. Behzad
This paper deals with vibrational behaviors of blades with cracks which are key components in rotating machines. However, since modelling and analysis of real blade is a complex problem, a simplified cantilever beam with both chordwise (in X-Y plane) and flapwise (in X-Z plane) motion are modeled instead. Finite Element Method (FEM) is used to model beam and to investigate its natural frequencies with a crack. Finally a limit function using modal data is developed and reliability analysis of beam model is performed.
{"title":"Reliability analysis of rotating cracked blade using modal data","authors":"Sepehr Heidari, A. Zabihollah, M. Behzad","doi":"10.1109/ICMSC.2017.7959447","DOIUrl":"https://doi.org/10.1109/ICMSC.2017.7959447","url":null,"abstract":"This paper deals with vibrational behaviors of blades with cracks which are key components in rotating machines. However, since modelling and analysis of real blade is a complex problem, a simplified cantilever beam with both chordwise (in X-Y plane) and flapwise (in X-Z plane) motion are modeled instead. Finite Element Method (FEM) is used to model beam and to investigate its natural frequencies with a crack. Finally a limit function using modal data is developed and reliability analysis of beam model is performed.","PeriodicalId":356055,"journal":{"name":"2017 International Conference on Mechanical, System and Control Engineering (ICMSC)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127596201","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 : 2017-05-01DOI: 10.1109/ICMSC.2017.7959460
Xiao-juan Liang, Lang Wei, Qiangren Li
The purpose of control strategy is to present a novel controller of power assist steering system in electric vehicle. Firstly, integrated controller module was applied to electric vehicle whose front axle was refitted to meet the needs of two twin motors in independent hub wheel. Secondly, advanced algorithm was employed in optimizing decision-making rules of fuzzy controller. Thirdly, the new model was embedded in developing simulation environment with a driver-vehicle-road closed-loop system. Finally, control strategy compiled in controller prototype was used for a compact control system development platform in laboratory to verify the proposed controller. Both simulative and laboratorial results prove that if the vehicle is equipped with in-wheel motors on both sides and track steering torque indicator of driving current, the control strategy is beneficial to both improvement of yaw motion and reduction slip angle of vehicle.
{"title":"Novel power assist steering control strategy in electrical vehicle using independent twin motors","authors":"Xiao-juan Liang, Lang Wei, Qiangren Li","doi":"10.1109/ICMSC.2017.7959460","DOIUrl":"https://doi.org/10.1109/ICMSC.2017.7959460","url":null,"abstract":"The purpose of control strategy is to present a novel controller of power assist steering system in electric vehicle. Firstly, integrated controller module was applied to electric vehicle whose front axle was refitted to meet the needs of two twin motors in independent hub wheel. Secondly, advanced algorithm was employed in optimizing decision-making rules of fuzzy controller. Thirdly, the new model was embedded in developing simulation environment with a driver-vehicle-road closed-loop system. Finally, control strategy compiled in controller prototype was used for a compact control system development platform in laboratory to verify the proposed controller. Both simulative and laboratorial results prove that if the vehicle is equipped with in-wheel motors on both sides and track steering torque indicator of driving current, the control strategy is beneficial to both improvement of yaw motion and reduction slip angle of vehicle.","PeriodicalId":356055,"journal":{"name":"2017 International Conference on Mechanical, System and Control Engineering (ICMSC)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114976931","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 : 2017-05-01DOI: 10.1109/ICMSC.2017.7959490
Jürgen Lohrer, M. Förth, M. Lienkamp
Plug-In Hybrid Electric Vehicles show great potential for decreasing the fuel consumption on specified routes. However, in many cases the trip destination or the distance until the next charge is unknown for the vehicle. This paper presents a data-driven, online energy management strategy that is based on a trip and speed profile prediction for a receding horizon, which takes personal points of interest or upcoming charging stations into consideration. Pontryagin's Minimum Principle including a reduced shooting algorithm is applied to optimize the vehicle state. We evaluated the method for multiple trips of varying length and expect an estimated fuel saving of 8.0% compared to a non-predictive approach.
{"title":"A data-driven predictive energy management strategy for plug-in hybrid vehicles","authors":"Jürgen Lohrer, M. Förth, M. Lienkamp","doi":"10.1109/ICMSC.2017.7959490","DOIUrl":"https://doi.org/10.1109/ICMSC.2017.7959490","url":null,"abstract":"Plug-In Hybrid Electric Vehicles show great potential for decreasing the fuel consumption on specified routes. However, in many cases the trip destination or the distance until the next charge is unknown for the vehicle. This paper presents a data-driven, online energy management strategy that is based on a trip and speed profile prediction for a receding horizon, which takes personal points of interest or upcoming charging stations into consideration. Pontryagin's Minimum Principle including a reduced shooting algorithm is applied to optimize the vehicle state. We evaluated the method for multiple trips of varying length and expect an estimated fuel saving of 8.0% compared to a non-predictive approach.","PeriodicalId":356055,"journal":{"name":"2017 International Conference on Mechanical, System and Control Engineering (ICMSC)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122527777","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 : 2017-05-01DOI: 10.1109/ICMSC.2017.7959452
Qiu Rongkai, S. Jang, Bao Luqiang, Tao Yu
During transonic and supersonic wind tunnel test, air-supply pressure pipeline can generate strong vibration, and the long-term large-amplitude vibration of the pipeline can cause fatigue fracture and even severely influence the long- term reliable operation of the wind tunnel equipment. Therefore, it is greatly significant to research the vibration attenuation technology for the wind tunnel air-supply pressure pipeline. In allusion to the fluid-structure interaction vibration problem of pressure pipeline system, the vibration spectrum is measured through time-domain signal to test the vibration performance of certain pipeline under different working condition parameters and research the pipeline vibration attenuation technology. Specifically, passive control technology and numerical simulation method are adopted to research the correlation between vibration amplitude, vibration velocity and spring stiffness, damping under pressure pulsation excitation. Afterwards, suitable elastic damper, viscous damper and installation position are selected according to numerical simulation result. Finally, the experimental verification result shows: it is safe and reliable to firstly predict the vibration performance of the pressure pipeline system with complex spatial arrangement through numerical simulation method and then perform the vibration attenuation design; the maximum vibration amplitude of the improved pressure pipeline system can be maximally reduced by 62.26%, which fully satisfies the expectation.
{"title":"Vibration analysis of transonic wind tunnel air-supply pipeline and vibration attenuation technology research","authors":"Qiu Rongkai, S. Jang, Bao Luqiang, Tao Yu","doi":"10.1109/ICMSC.2017.7959452","DOIUrl":"https://doi.org/10.1109/ICMSC.2017.7959452","url":null,"abstract":"During transonic and supersonic wind tunnel test, air-supply pressure pipeline can generate strong vibration, and the long-term large-amplitude vibration of the pipeline can cause fatigue fracture and even severely influence the long- term reliable operation of the wind tunnel equipment. Therefore, it is greatly significant to research the vibration attenuation technology for the wind tunnel air-supply pressure pipeline. In allusion to the fluid-structure interaction vibration problem of pressure pipeline system, the vibration spectrum is measured through time-domain signal to test the vibration performance of certain pipeline under different working condition parameters and research the pipeline vibration attenuation technology. Specifically, passive control technology and numerical simulation method are adopted to research the correlation between vibration amplitude, vibration velocity and spring stiffness, damping under pressure pulsation excitation. Afterwards, suitable elastic damper, viscous damper and installation position are selected according to numerical simulation result. Finally, the experimental verification result shows: it is safe and reliable to firstly predict the vibration performance of the pressure pipeline system with complex spatial arrangement through numerical simulation method and then perform the vibration attenuation design; the maximum vibration amplitude of the improved pressure pipeline system can be maximally reduced by 62.26%, which fully satisfies the expectation.","PeriodicalId":356055,"journal":{"name":"2017 International Conference on Mechanical, System and Control Engineering (ICMSC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125299047","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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