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检索条件"主题词=Sliding Mode variable structure"

共 62 条记录，以下是11-20 订阅

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Research on BLDCM DTC torque setting based on sliding mode variable structure 43

Research on BLDCM DTC torque setting based on sliding mode v...

引用

43rd Chinese Control Conference (CCC)

作者： Jiang, Jiawen Zhu, Wanlu Zhi, Pengfei Jiangsu Univ Sci & Technol Coll Automat Zhenjiang 212000 Jiangsu Peoples R China

ISBN: (纸本)9798350366907;9789887581581

With the continuous progress of today's control theory and microelectronics technology, brushless direct current motor (BLDCM), as the product of the combination of the above technologies, has been widely used in the field of motor systems from the earliest application in the field of military aviation to the current popularity in the field of industry, transportation and household appliances. However, the problems of starting and low speed performance caused by torque pulsation greatly limit its development in the field of higher precision requirements. On this basis, the sliding mode variable structure is applied to the torque setting module of BLDCM-DTC instead of the traditional PI control. The sliding mode control method based on traditional linear sliding mode surface and exponential approach rate is analyzed, and then the sliding mode control method based on nonlinear integral sliding mode surface and hybrid approach rate is designed. Analysis of modeling and simulation.

关键词： Brushless DC motor Torque control sliding mode variable structure

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Study of sliding mode variable structure Control System for A Novel Gearless Windlass Balance Oil Pumping Unit Driven by Low-speed and High-torque PMSM

Study of Sliding Mode Variable Structure Control System for ...

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12th International Conference on Electrical Machines and Systems

作者： Zhang, Bingyi Wang, Shuai Zhang, You Gong, Shuqiu Cheng, Xiang Feng, Guihong Shenyang Univ Technol Sch Elect Engn Shenyang 110178 Peoples R China Northeast Yucai sch Shenyang Shenyang 110179 Peoples R China

ISBN: (纸本)9781424451777

The paper studies sliding mode variable structure control system for a novel gearless windlass balance oil pumping unit(GWBOPU) driven by low-speed and high-torque permanent magnet synchronous motor (PMSM). By analyzing the correlative relationships of the motor and the load, a mathematics model for GWBOPU is established. Base on this model, a speed sliding mode controller is designed by regarding the load speed as the control object. To guarantee the higher operating performance of the system, the running speed is also planned and designed according to different operating conditions. The simulation and experiment results show the control system has satisfied dynamic performance and strong robustness to disturbances.

关键词： GWBOPU PMSM sliding mode variable structure Speed Control

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Analysis of PMLSM direct thrust control system based on sliding mode variable structure

Analysis of PMLSM direct thrust control system based on slid...

引用

CES/IEEE 5th International Power Electronics and Motion Control Conference

作者： Yang, Junyou He, Guofeng Cui, Jiefan Shenyang Univ Technol Sch Elect Engn Shenyang 110023 Peoples R China

ISBN: (纸本)1424404487

The permanent magnet linear synchronous motor (PMLSM) direct thrust control (DTC) systems using space vector modulation (SVM) and sliding mode variable-structure are presented and analyzed. Firstly, simulation results of the classical DTC system and the system based on SVM and predictive PI controller are compared. Both systems based on SVM can keep the fast response characteristics of the conventional DTC and apparently reduce the mover flux and thrust force ripples, and furthermore, it can improve the inverter's switching frequency at low speeds. Under the same conditions, simulation results show that the systems using SVM produce almost the same mover flux and thrust ripples. But the system using sliding mode variable structure controller is more robust to the mover flux estimated angle error caused by the change of the mover resistance. The conventional DTC and the proposed system have been realized on the experiment platform based on TMS320LF2407. Experiment results show that the system has good performances.

关键词： permanent magnet linear synchronous motor direct thrust control space vector modulation sliding mode variable structure

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Asynchronous motor direct torque control based on the sliding mode variable structure

Asynchronous motor direct torque control based on the slidin...

引用

International Conference on Electronics and Communication Systems (ICECS)

作者： Cheng, Pan Xiang, Feng-hong Wang, Jian-ping Zhang, Guo Mao, Jian-lin Kunming Univ Sci & Technol Sch Automat Kunming 650500 Yunnan Peoples R China

ISBN: (纸本)9781479923205

Aimed at the problems of larger torque ripple and non-constant inverter switch frequency in the direct torque control for asynchronous motor, this article puts forward a new idea. In same words, the idea is that the traditional PI controller is replaced by speed controller of sliding mode variable structure (SMVS). What's more, according to the mathematical models of induction motor in synchronous rotation coordinates and control theory of sliding mode variable structure, a new variable structure sliding mode controller based on torque and flux errors is proposed. Using the reference voltage vectors which are the outputs of the controller, the switching control signals of the inverter are generated by space vector PWM(SVPWM) technology. The simulation research verifies that the proposed control scheme reduces torque and flux ripple significantly, ensures the inverter switching frequency to be fixed, and it also has strong robustness to motor parameter and disturbance.

关键词： Asynchronous motor Speed controller sliding mode variable structure Direct torque control Space vector PWM

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Position Servo Control Technology Based on sliding mode variable structure for Permanent Magnet Linear Synchronous Motor

Position Servo Control Technology Based on Sliding Mode Vari...

引用

International Conference on Mechatronics Engineering and Computing Technology (ICMECT)

作者： Zheng Jigui Wu Hongxing Xu Ying Zheng Ping Harbin Inst Technol Elect Engn & Automat Harbin Peoples R China Beijing Res Inst Precise Mechatron Controls Beijing Peoples R China

ISBN: (纸本)9783038351153

The traditional rocket and missile actuator usually uses the hydromantic servo system or pneumatic servo system, because of their better dynamic characteristic and structural adaptability. While with heavy weight, complex structure and expensive cost, it is difficult to realize. The permanent magnet active current servo motor has many advantages, such as high torque, small inertia, high efficiency, the high ratio of power to inertia, cramped construction, firmness, easy maintaining and high reliability. The electrical servo system using the permanent magnet active current servo motor as the power unit satisfies the need of the tactical missile gas vane and air vane servo system, because the range of its transmitted power is wide, its response is quick, and control power is low. This paper analyzed the pole shoe's shape optimization characteristic against the interior permanent magnet synchronous motor for actuator, presents the design method and main process of permanent magnet synchronous motor for actuator using the field-circuit method. Optimal design can be acquired by the equivalent magnetic circuit method and the finite-element method conveniently and precisely. The analytical result of the prototype motor validated the feasibility of the optimization design.

关键词： synchronous motor sliding mode variable structure position servo

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Study on sliding mode variable structure Control in Nonlinear Coupled Systems of Diesel Engines 2018

Study on Sliding Mode Variable Structure Control in Nonlinea...

引用

10th International Conference on Computer and Automation Engineering (ICCAE)

作者： Cai, Le Mao, Xiaobing Ma, Zhexuan Wuhan Univ Technol 1174 Heping Rd Wuhan Hubei Peoples R China

ISBN: (纸本)9781450364102

In order to improve the injection quality and the performance of engine common rail system, on the basis of the measured data in bench tests, quadratic polynomial fitting method is adopted to obtain the differential equations of pressure and speed system for high pressure common rail of diesel engine. This mathematical model belongs to multi-input nonlinear systems of mutually coupled pressure and speed of common rail diesel engine. First, the nonlinear state transformation is performed using flow computation, obtaining the standard state space equations of two decoupled single input. Then, sliding mode variable structure (SMVS) control theory is used to design two sliding mode controllers for single input nonlinear systems, in order to realize the control over the common rail pressure and diesel engine speed. MATLAB/ Simulink software simulation platform is then utilized to simulate the designed nonlinear high pressure common rail control system. Finally, the real time simulation of common rail pressure is conducted on a computer through prototype code conversion and Digital Signal Processor (DSP) embedding technology. Results show that the sliding mode variable structure control algorithm has satisfactory control performance over nonlinear systems, solving the problems of traditional Proportional Integral Differential (PID) control that the response is slow, the overshoot is large, and the robustness is weak.

关键词： Common rail Flow computation Multi-input nonlinear sliding mode variable structure

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Study on Control Strategy of sliding mode variable structure-based Electronic Virtual Line Shafting

Study on Control Strategy of Sliding Mode Variable Structure...

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3rd International Conference on Intelligent System Design and Engineering Applications (ISDEA)

作者： Zhang Changfan Xiao Yuanyuan Wen Long He Jing Hunan Univ Technol Coll Elect & Informat Engn Zhuzhou 412007 Hunan Peoples R China

ISBN: (纸本)9780769549231;9781467348935

The degree of precision for positioning of adjustable rollers during pre-registering stage has direct influences on register precision of the entire printing. The paper puts forward control strategy of sliding mode variable structure-based electronic virtual line shafting based on the influences of low-speed pre-register process of shaft-less drive printing press on register precision and the influences of nonlinearity and disturbance on synchronous precision of printing process. The experimental results demonstrate that the control strategy proposed by this paper can realize synchronous control of shaft-less drive printing press, and also can inhibit effectively the influences on synchronization of system position due to change of parameters and friction during pre-registering stage.

关键词： pre-registering register precision friction electronic virtual line shafting sliding mode variable structure

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sliding mode variable structure Control on Vienna Rectifier

Sliding Mode Variable Structure Control on Vienna Rectifier

引用

第32届中国控制与决策会议

作者： Xiping Huang Danyang Ma Xi Chen School of Automation and Information Engineering Xi'an University of Technology

Based on the mathematical model of Vienna rectifier,the controller of Vienna rectifier is researched and *** voltage outer loop adopt the sliding mode variable structure control(SMC),in order to obtain a stable DC output voltage when Vienna rectifier is starting or is affected by the load disturbance and so *** deviation of the output voltage is selected as the sliding mode switching *** the chattering problems of the traditional index approach rate,the variable index approach law is proposed in this *** current inner loop uses model predictive control on finite set(FCS-MPC) of no modulation unit,easy to add constraints,strong anti-interference ***,the proposed control strategy is *** simulation results show that the method is correct and effective,the Vienna rectifier has strong robustness and anti-interference ability.

关键词： Vienna Rectifier sliding mode variable structure The variable Index Approach Law model Prediction Control on Finite Set

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Research on Multi-axis Servo Synergic Control System Based on sliding mode variable structure 45

Research on Multi-axis Servo Synergic Control System Based o...

引用

45th Annual Conference of the IEEE Industrial Electronics Society (IECON)

作者： He, Jing Ding, Jin Zhang, Changfan Mao, Songan Liu, Jianhua Hu, Jiaxi Ma, Zhenyu Hunan Univ Technol Coll Elect & Informat Engn Zhuzhou Peoples R China Purdue Univ Sch Elect & Comp Engn W Lafayette IN 47907 USA CRRC Zhuzhou Inst Co Ltd Technol Ctr Zhuzhou Peoples R China

ISBN: (纸本)9781728148786

This paper investigates a synchronous control method with variable proportion for multi-axis servo system based on sliding mode variable structure to solve the inherent shortcomings of parallel synchronous uncoupled control for multi-servo motors. The method is an improvement of the ring-coupled control strategy and is thus applicable to multi-axis proportional synchronous control. No-salient pole permanent magnet synchronous servo motors are taken as the controlled objects. A sliding mode controller is designed according to the state equation of the mathematical model. The rationality of the designed controller is proven by Lyapunov stability theory, and the method is compared with a parallel synchronous control strategy, which is widely used in the object of this research. Finally, the feasibility and superiority of the method in a multi-axis synchronous control system with variable proportion is confirmed by MATLAB simulation and experimental verification. The method is applied to a three- degree-of-freedom servo system, and makes the theoretical research have the corresponding practical engineering application value.

关键词： sliding mode variable structure ring-coupled control strategy multi-axis servo systems

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Using an Adaptive sliding mode variable structure Controller with Sector Nonlinear Input to Achieve Chaotic Systems Synchronization

Using an Adaptive Sliding Mode Variable Structure Controller...

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International Workshop on Chaos-Fractals Theories and Applications

作者： Deng, Wei Wang, Jifang Cui, Guangzhao Wu, Zhenjun Fang, Jie Zhengzhou Univ Light Ind Sch Elect Informat Engn Henan Key Lab Informat Based Elect Appliances Zhengzhou Peoples R China

ISBN: (纸本)9780769538532

a method based on adaptive sliding mode variable structure controller is presented for synchronization of a class of chaotic system with perturbations and parameter mismatch. The controller is more robust to perturbations, parameter mismatch and inputs sector nonlinearity. Moreover, no restrictive assumption is imposed on the system. Thus the adaptation range of the proposed method becomes broad. Theoretical analysis and simulation results illustrate the validity.

关键词： chaotic synchronization adaptive control sliding mode variable structure input nonlinearity

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