Pub Date : 2020-07-01DOI: 10.23919/CCC50068.2020.9188768
Jiangna Zhang, Bin Wang, Jiang-hua Liu, Liangli Zhang
The circulating current is present generally in the parallel inverter system due to the asynchronous PWM. Aiming to the circulating current of the parallel inverter system, a PWM precise synchronous control method based on EtherCAT distributed ring network topology is proposed. By using the distributed clock of EtherCAT, the initial offset, transmission delay and clock drift between the clocks of each slave station are reduced to achieve PWM synchronization at each station. The establishment of the distributed ring network topology control experiment platform with EtherCAT and DSP as the core has verified the validity and feasibility of the above ring topology and synchronization algorithm.
{"title":"PWM Precise Synchronous Control Method Based on EtherCAT Distributed Ring Net Topology","authors":"Jiangna Zhang, Bin Wang, Jiang-hua Liu, Liangli Zhang","doi":"10.23919/CCC50068.2020.9188768","DOIUrl":"https://doi.org/10.23919/CCC50068.2020.9188768","url":null,"abstract":"The circulating current is present generally in the parallel inverter system due to the asynchronous PWM. Aiming to the circulating current of the parallel inverter system, a PWM precise synchronous control method based on EtherCAT distributed ring network topology is proposed. By using the distributed clock of EtherCAT, the initial offset, transmission delay and clock drift between the clocks of each slave station are reduced to achieve PWM synchronization at each station. The establishment of the distributed ring network topology control experiment platform with EtherCAT and DSP as the core has verified the validity and feasibility of the above ring topology and synchronization algorithm.","PeriodicalId":255872,"journal":{"name":"2020 39th Chinese Control Conference (CCC)","volume":"155 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131626330","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}
Surface cleaning has always been an important procedure to improve quality and performance of final components in modern industrial manufacturing. Among various surface cleanings, laser cleaning has been identified as the most promising green cleaning technology to replace conventional mechanical and chemical cleaning. Laser cleaning is a green cleaning technology that will not result in environmental pollution. And, laser cleaning is a versatile, precise, and controllable technology. A set of laser cleaning system that consists of line structured light and industrial manipulator, was designed in this paper. The line structured light, combined with camera, was used to scan workpiece surface and reconstruct the 3D model of workpiece surface. The industrial manipulator was utilized to perform scanning and cleaning movements. This new system is called Laser Cleaning Robot (LCR). To improve automation level and cleaning efficiency of the LCR, a path generation method based on line structured light and industrial manipulator was proposed in this paper. Experimental results demonstrate the performance of the proposed method in terms of cleaning efficiency for large-scale workpiece.
{"title":"On Path Generation Method for Laser Cleaning Robot Based on Line Structured Light","authors":"Qingzeng Ma, Dongbin Zhang, Shuo Jin, Yuan Ren, Wei Cheng, Yanlei Li","doi":"10.23919/CCC50068.2020.9189033","DOIUrl":"https://doi.org/10.23919/CCC50068.2020.9189033","url":null,"abstract":"Surface cleaning has always been an important procedure to improve quality and performance of final components in modern industrial manufacturing. Among various surface cleanings, laser cleaning has been identified as the most promising green cleaning technology to replace conventional mechanical and chemical cleaning. Laser cleaning is a green cleaning technology that will not result in environmental pollution. And, laser cleaning is a versatile, precise, and controllable technology. A set of laser cleaning system that consists of line structured light and industrial manipulator, was designed in this paper. The line structured light, combined with camera, was used to scan workpiece surface and reconstruct the 3D model of workpiece surface. The industrial manipulator was utilized to perform scanning and cleaning movements. This new system is called Laser Cleaning Robot (LCR). To improve automation level and cleaning efficiency of the LCR, a path generation method based on line structured light and industrial manipulator was proposed in this paper. Experimental results demonstrate the performance of the proposed method in terms of cleaning efficiency for large-scale workpiece.","PeriodicalId":255872,"journal":{"name":"2020 39th Chinese Control Conference (CCC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131825096","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 : 2020-07-01DOI: 10.23919/CCC50068.2020.9188647
Qianwei He, Ye Yang, Lei Liu, Zhongtao Cheng
For the difficulties and challenges caused by the unknown disturbance during the ascent stage of the launch vehicle, a trajectory tracking strategy using particle swarm optimization (PSO) algorithm in a receding horizon control (RHC) framework is investigated in this paper. Since the RHC solves the online optimization problem at each step, the calculations can be time-consuming. To speed up the computation of RHC, the online optimization problem is transformed into a one-dimensional variable optimal problem and the control actions are obtained by PSO. Providing solve times in milliseconds, which guarantees the feasibility of the RHC controller. Simulation results are provided to illustrate that this strategy can not only satisfy the fast calculation speed, but also can realize better performance with the existence of aerodynamic uncertainty, thrust uncertainty, and process constraint.
{"title":"Ascent Guidance for Launch Vehicle Based on Receding Horizon Control","authors":"Qianwei He, Ye Yang, Lei Liu, Zhongtao Cheng","doi":"10.23919/CCC50068.2020.9188647","DOIUrl":"https://doi.org/10.23919/CCC50068.2020.9188647","url":null,"abstract":"For the difficulties and challenges caused by the unknown disturbance during the ascent stage of the launch vehicle, a trajectory tracking strategy using particle swarm optimization (PSO) algorithm in a receding horizon control (RHC) framework is investigated in this paper. Since the RHC solves the online optimization problem at each step, the calculations can be time-consuming. To speed up the computation of RHC, the online optimization problem is transformed into a one-dimensional variable optimal problem and the control actions are obtained by PSO. Providing solve times in milliseconds, which guarantees the feasibility of the RHC controller. Simulation results are provided to illustrate that this strategy can not only satisfy the fast calculation speed, but also can realize better performance with the existence of aerodynamic uncertainty, thrust uncertainty, and process constraint.","PeriodicalId":255872,"journal":{"name":"2020 39th Chinese Control Conference (CCC)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131838652","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 : 2020-07-01DOI: 10.23919/CCC50068.2020.9188718
Yishu Peng, Sheng Zhang, Jiashu Zhang, Fuyi Huang
Due to the highly correlated speech input signal and sparse echo path in echo cancellation application, the conventional least mean square (LMS) algorithm will suffer from slow convergence rate. In this paper, we firstly develop an improved proportionate weight-constraint decorrelation normalized least mean square (IPDNLMS) algorithm, which makes use of decorrelation and proportionate methods to increase the convergence rate. Then, to solve the conflict between fast convergence rate and small steady-state error, a combined-step-size IPDNLMS (CSS-IPDNLMS) algorithm is proposed, which combines two different step-sizes of one IPDNLMS filter adaptively via a modified sigmoidal activation function. The stability analysis is also carried out. Finally, simulation results indicate the proposed CSS-IPDNLMS algorithm is efficient and outperforms the normalized least mean square (NLMS), improved proportionate NLMS (IPNLMS), weight-constraint decorrelation NLMS (WCDNLMS), proportionate decorrelation NLMS (PDNLMS), and IPDNLMS algorithms.
{"title":"Combined-step-size Proportionate Decorrelation NLMS Algorithm for Adaptive Echo Cancellation","authors":"Yishu Peng, Sheng Zhang, Jiashu Zhang, Fuyi Huang","doi":"10.23919/CCC50068.2020.9188718","DOIUrl":"https://doi.org/10.23919/CCC50068.2020.9188718","url":null,"abstract":"Due to the highly correlated speech input signal and sparse echo path in echo cancellation application, the conventional least mean square (LMS) algorithm will suffer from slow convergence rate. In this paper, we firstly develop an improved proportionate weight-constraint decorrelation normalized least mean square (IPDNLMS) algorithm, which makes use of decorrelation and proportionate methods to increase the convergence rate. Then, to solve the conflict between fast convergence rate and small steady-state error, a combined-step-size IPDNLMS (CSS-IPDNLMS) algorithm is proposed, which combines two different step-sizes of one IPDNLMS filter adaptively via a modified sigmoidal activation function. The stability analysis is also carried out. Finally, simulation results indicate the proposed CSS-IPDNLMS algorithm is efficient and outperforms the normalized least mean square (NLMS), improved proportionate NLMS (IPNLMS), weight-constraint decorrelation NLMS (WCDNLMS), proportionate decorrelation NLMS (PDNLMS), and IPDNLMS algorithms.","PeriodicalId":255872,"journal":{"name":"2020 39th Chinese Control Conference (CCC)","volume":"239 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132947395","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 : 2020-07-01DOI: 10.23919/CCC50068.2020.9188987
Wei Yang, Guozeng Cui, Ze Li, C. Tao
In this paper, the problem of adaptive practical fixed-time control is investigated for a class of uncertain nonlinear systems with input saturation. A fixed-time command filter is introduced to solve the problem of "explosion of complexity", and the fractional order error compensation mechanism is used to eliminate the effect of filter error. To address the input saturation, a novel fixed-time auxiliary system is constructed. By combining the novel command filter and backstepping design method, a fixed-time state-feedback controller is designed. It is proved that the output tracking error converges to a region of zero within fixed time. A main advantage is that the convergence time is predefined without dependence on initial states. Finally, a numerical example is provided to show the effectiveness of the proposed control scheme.
{"title":"Adaptive Practical Fixed-Time Control for a Class of Nonlinear Systems with Input Saturation","authors":"Wei Yang, Guozeng Cui, Ze Li, C. Tao","doi":"10.23919/CCC50068.2020.9188987","DOIUrl":"https://doi.org/10.23919/CCC50068.2020.9188987","url":null,"abstract":"In this paper, the problem of adaptive practical fixed-time control is investigated for a class of uncertain nonlinear systems with input saturation. A fixed-time command filter is introduced to solve the problem of \"explosion of complexity\", and the fractional order error compensation mechanism is used to eliminate the effect of filter error. To address the input saturation, a novel fixed-time auxiliary system is constructed. By combining the novel command filter and backstepping design method, a fixed-time state-feedback controller is designed. It is proved that the output tracking error converges to a region of zero within fixed time. A main advantage is that the convergence time is predefined without dependence on initial states. Finally, a numerical example is provided to show the effectiveness of the proposed control scheme.","PeriodicalId":255872,"journal":{"name":"2020 39th Chinese Control Conference (CCC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129387478","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 : 2020-07-01DOI: 10.23919/CCC50068.2020.9189418
Jiajia Feng, Zuo-Bin Wang, Weijie Liu
Aiming at the problem of how to realize autonomous control of spacecraft, this paper designs autonomous control system based on hierarchical structure with geosynchronous orbit (GEO) satellite as the background. The system takes into account the control structure, task requirements, fault diagnosis and reconstruction, etc. The system adopts a three-layer hierarchical structure, namely the organizational planning layer, the distribution coordination layer and the real-time execution layer. The organization planning layer is responsible for controlling the generation of tasks, and undertakes, manages and intelligently decides the control tasks; the coordination layer is responsible for coordinated control strategy, and fault diagnosis and reconstruction; real-time execution layer is responsible for information acquisition, and execution control strategy. In this paper, the detailed design and analysis of the mechanism of the autonomous operation of the system are carried out, and the specific control algorithms and control strategies involved are briefly described. At the end of the paper, the designed system is used to verify the normal working stage of a certain type of satellite platform. The results show that the system designed in this paper can effectively realize the autonomous operation of the spacecraft, which proves that the system is feasible and effective, with engineering application value.
{"title":"Autonomous Control System for GEO Satellite Based on Hierarchical Structure","authors":"Jiajia Feng, Zuo-Bin Wang, Weijie Liu","doi":"10.23919/CCC50068.2020.9189418","DOIUrl":"https://doi.org/10.23919/CCC50068.2020.9189418","url":null,"abstract":"Aiming at the problem of how to realize autonomous control of spacecraft, this paper designs autonomous control system based on hierarchical structure with geosynchronous orbit (GEO) satellite as the background. The system takes into account the control structure, task requirements, fault diagnosis and reconstruction, etc. The system adopts a three-layer hierarchical structure, namely the organizational planning layer, the distribution coordination layer and the real-time execution layer. The organization planning layer is responsible for controlling the generation of tasks, and undertakes, manages and intelligently decides the control tasks; the coordination layer is responsible for coordinated control strategy, and fault diagnosis and reconstruction; real-time execution layer is responsible for information acquisition, and execution control strategy. In this paper, the detailed design and analysis of the mechanism of the autonomous operation of the system are carried out, and the specific control algorithms and control strategies involved are briefly described. At the end of the paper, the designed system is used to verify the normal working stage of a certain type of satellite platform. The results show that the system designed in this paper can effectively realize the autonomous operation of the spacecraft, which proves that the system is feasible and effective, with engineering application value.","PeriodicalId":255872,"journal":{"name":"2020 39th Chinese Control Conference (CCC)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129379994","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 : 2020-07-01DOI: 10.23919/CCC50068.2020.9188893
P. Zhou, Bo Yang, Cailian Chen
In Industrial Internet of Things (IIoT), in order to satisfy the requirements of delay-sensitive service, devices with limited computing resources could offload computing task to edge server via wireless network. However, limited spectrum resource restricts the computation offloading of massive devices and may cause high transmission delay. Non-orthogonal multiple access (NOMA) is a promising technique to handle the issue which allows multiple devices to share the same frequency resource simultaneously. Thus in order to improve spectrum efficiency, this paper investigates computation offloading in NOMA-enabled IIoT. Specially, we consider co-channel interference in our model which complicates network spectrum resource allocation. A computation offloading scheme is designed by solving the minimum total completion delay problem which jointly optimizes computation resources allocation, transmission power allocation and subchannel assignment. In order to reduce the computational complexity, we decompose the original problem into three subproblems and propose an iterative algorithm based on optimization theory and many-to-one matching. Simulation results show that compared with orthogonal multiple access (OMA) based method, our method outperforms in total completion delay and network transmission rate.
{"title":"Joint Computation Offloading and Resource Allocation for NOMA-Enabled Industrial Internet of Things","authors":"P. Zhou, Bo Yang, Cailian Chen","doi":"10.23919/CCC50068.2020.9188893","DOIUrl":"https://doi.org/10.23919/CCC50068.2020.9188893","url":null,"abstract":"In Industrial Internet of Things (IIoT), in order to satisfy the requirements of delay-sensitive service, devices with limited computing resources could offload computing task to edge server via wireless network. However, limited spectrum resource restricts the computation offloading of massive devices and may cause high transmission delay. Non-orthogonal multiple access (NOMA) is a promising technique to handle the issue which allows multiple devices to share the same frequency resource simultaneously. Thus in order to improve spectrum efficiency, this paper investigates computation offloading in NOMA-enabled IIoT. Specially, we consider co-channel interference in our model which complicates network spectrum resource allocation. A computation offloading scheme is designed by solving the minimum total completion delay problem which jointly optimizes computation resources allocation, transmission power allocation and subchannel assignment. In order to reduce the computational complexity, we decompose the original problem into three subproblems and propose an iterative algorithm based on optimization theory and many-to-one matching. Simulation results show that compared with orthogonal multiple access (OMA) based method, our method outperforms in total completion delay and network transmission rate.","PeriodicalId":255872,"journal":{"name":"2020 39th Chinese Control Conference (CCC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130713500","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 : 2020-07-01DOI: 10.23919/CCC50068.2020.9189369
Jia-Ming Chang, D. Shen, Dong Chen
The torque load test is one of the key tests in the development of aircraft sidestick. Due to the coupling effect of mechanical structure, the angle produced by aircraft sidestick itself will affected the loaded torque of electric loading system, so that the surplus torque appears. In this paper, a control method is proposed to eliminate the surplus torque of loading device for aircraft sidestick. Active disturbance rejection control (ADRC) uses the extended state observer to collect all the nonlinear uncertainties for compensation. In order to avoid the negative influence of strong coupling of ADRC control parameters, whale optimization algorithm (WOA) is combined to automatically tune the parameters for the state of minimum surplus torque. The simulation results show that compared with PID control, the ADRC tuned by WOA can reduce the influence of sidestick angle disturbance, thus it satisfies the requirement for less surplus torque.
{"title":"Active Disturbance Rejection Control Tuned by Whale Optimization Algorithm for Electric Loading System","authors":"Jia-Ming Chang, D. Shen, Dong Chen","doi":"10.23919/CCC50068.2020.9189369","DOIUrl":"https://doi.org/10.23919/CCC50068.2020.9189369","url":null,"abstract":"The torque load test is one of the key tests in the development of aircraft sidestick. Due to the coupling effect of mechanical structure, the angle produced by aircraft sidestick itself will affected the loaded torque of electric loading system, so that the surplus torque appears. In this paper, a control method is proposed to eliminate the surplus torque of loading device for aircraft sidestick. Active disturbance rejection control (ADRC) uses the extended state observer to collect all the nonlinear uncertainties for compensation. In order to avoid the negative influence of strong coupling of ADRC control parameters, whale optimization algorithm (WOA) is combined to automatically tune the parameters for the state of minimum surplus torque. The simulation results show that compared with PID control, the ADRC tuned by WOA can reduce the influence of sidestick angle disturbance, thus it satisfies the requirement for less surplus torque.","PeriodicalId":255872,"journal":{"name":"2020 39th Chinese Control Conference (CCC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131061246","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 : 2020-07-01DOI: 10.23919/CCC50068.2020.9189048
Liying Bao, B. Qi
One of the most concerned problems in quantum metrology is exploiting quantum resources to increase the precision of quantum parameter estimation. One natural and standard way of improving the precision of estimation is letting the initial probe state being optimal. However, the optimal initial probe state on the one hand may be hard to identify, and on the other hand one cannot prepare the optimal initial state perfectly in practice. In this paper, we focus on the influence of the imperfect preparation of the optimal initial probe state to the precision limit of quantum parameter estimation. The analytical results are valid for unitary evolutions with arbitrary dimension.
{"title":"Robustness of Imperfect Initialization in Quantum Parameter Estimation","authors":"Liying Bao, B. Qi","doi":"10.23919/CCC50068.2020.9189048","DOIUrl":"https://doi.org/10.23919/CCC50068.2020.9189048","url":null,"abstract":"One of the most concerned problems in quantum metrology is exploiting quantum resources to increase the precision of quantum parameter estimation. One natural and standard way of improving the precision of estimation is letting the initial probe state being optimal. However, the optimal initial probe state on the one hand may be hard to identify, and on the other hand one cannot prepare the optimal initial state perfectly in practice. In this paper, we focus on the influence of the imperfect preparation of the optimal initial probe state to the precision limit of quantum parameter estimation. The analytical results are valid for unitary evolutions with arbitrary dimension.","PeriodicalId":255872,"journal":{"name":"2020 39th Chinese Control Conference (CCC)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131043949","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 : 2020-07-01DOI: 10.23919/CCC50068.2020.9189269
Jiang He, Chen Yan, Hong-zhang Wang, Dan-Yun Li
The regenerative chatter during milling seriously affects the stability of the system. This paper proposes a method based on Lyapunov-Krasovski functional analysis for the stability of the milling process. First, the mechanism analysis of the milling process is performed, then the state-space equation of the time-varying delay system caused by the regeneration effect is established. Secondly, based on the model of a time-delay system, a stability criterion is developed by constructing an augmented Lyapunov-Krasovski functional (LKF) and using auxiliary function inequality with reciprocally convex combination technology. Finally, the validity of the method is verified through an example, and the milling stability domain lobe diagram with a parameter combination of spindle speed-cutting depth is obtained which provides operational guidelines to guarantee a stable vibration-free process.
{"title":"Stability Analysis of Milling Process With Time-Varying Delays Via Lyapunov-Krasovskii Functional","authors":"Jiang He, Chen Yan, Hong-zhang Wang, Dan-Yun Li","doi":"10.23919/CCC50068.2020.9189269","DOIUrl":"https://doi.org/10.23919/CCC50068.2020.9189269","url":null,"abstract":"The regenerative chatter during milling seriously affects the stability of the system. This paper proposes a method based on Lyapunov-Krasovski functional analysis for the stability of the milling process. First, the mechanism analysis of the milling process is performed, then the state-space equation of the time-varying delay system caused by the regeneration effect is established. Secondly, based on the model of a time-delay system, a stability criterion is developed by constructing an augmented Lyapunov-Krasovski functional (LKF) and using auxiliary function inequality with reciprocally convex combination technology. Finally, the validity of the method is verified through an example, and the milling stability domain lobe diagram with a parameter combination of spindle speed-cutting depth is obtained which provides operational guidelines to guarantee a stable vibration-free process.","PeriodicalId":255872,"journal":{"name":"2020 39th Chinese Control Conference (CCC)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132883284","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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