Research of double servo system synchronization control base on decouple compensation control

2011 ◽  
Author(s):  
Chun-Fang Liu ◽  
Yin-Long Xing ◽  
Tong Wang
Keyword(s):  
Servo System ◽  
Synchronization Control ◽  
Compensation Control ◽  
System Synchronization

scholarly journals Evolutionary Algorithm-Based Friction Feedforward Compensation for a Pneumatic Rotary Actuator Servo System

2018 ◽  
Vol 8 (9) ◽  
pp. 1623 ◽  
Author(s):  
Ke Li ◽  
Yeming Zhang ◽  
Shaoliang Wei ◽  
Hongwei Yue
Keyword(s):  
Differential Evolution ◽  
Evolutionary Algorithm ◽  
Differential Evolution Algorithm ◽  
Servo System ◽  
Control Architecture ◽  
Tracking Accuracy ◽  
Pd Control ◽  
Compensation Control ◽  
Position Accuracy ◽  
Rotary Actuator

The friction interference in the pneumatic rotary actuator is the primary factor affecting the position accuracy of a pneumatic rotary actuator servo system. The paper proposes an evolutionary algorithm-based friction-forward compensation control architecture for improving position accuracy. Firstly, the basic equations of the valve-controlled actuator are derived and linearized in the middle position, and the transfer function of the system is further obtained. Then, the evolutionary algorithm-based friction feedforward compensation control architecture is structured, including that the evolutionary algorithm is used to optimize the controller coefficients and identify the friction parameters. Finally, the contrast experiments of four control strategies (the traditional PD control, the PD control with friction feedforward compensation without evolutionary algorithm tuning, the PD control with friction feedforward compensation based on the differential evolution algorithm, and the PD control with friction feedforward compensation based on the genetic algorithm) are carried out on the experimental platform. The experimental results reveal that the evolutionary algorithm-based friction feedforward compensation greatly improves the position tracking accuracy and positioning accuracy, and that the differential evolution-based case achieves better accuracy. Also, the system with the friction feedforward compensation still maintains high accuracy and strong stability in the case of load.

Servo Control System of NC Modifying Forming Grinding Wheel Based on Cross Coupling Theory

2013 ◽  
Vol 823 ◽  
pp. 80-83
Author(s):  
Hong Lu ◽  
Shi Tong Xie ◽  
You Wang
Keyword(s):  
High Precision ◽  
Dynamic Performance ◽  
External Disturbance ◽  
Servo System ◽  
Cross Coupling ◽  
Coupled System ◽  
Synchronization Control ◽  
Grinding Wheel ◽  
Control Scheme ◽  
Cross Coupling Control

This paper studies the synchronous control strategy which can meet certain dynamic performance and the closed loop robustness to external disturbance in servo system. This servo system has two same PMSMs which are used in a new CNC molding machine for forming grinding wheel. To achieve high-precision of the machine, we designed the hardware construction of the servo system. At the same time, this paper proposes a synchronization control scheme based on cross coupling control algorithms. The performance of the cross-coupled system is theoretically analyzed and simulated. It was proved that this synchronization control scheme has quick response, robustness and small dynamic process synchronization error, which could meet requirements of the high-precision synchronization control.

A Compensation Approach of Dead-Zone Nonlinearity in Dual-Motor Driving Servo System

2013 ◽  
Vol 389 ◽  
pp. 454-459 ◽  
Author(s):  
Hai Bo Zhao ◽  
Yun Guo Zhu
Keyword(s):  
Nonlinear System ◽  
Control Strategy ◽  
Dead Zone ◽  
Servo System ◽  
Step Response ◽  
Describing Function ◽  
Simulation Experiments ◽  
Compensation Control ◽  
Compensation Approach ◽  
The Impact

Aiming at the control problem of dual-motor driving servo system with dead-zone nonlinearity,we proposed the model of system linear part.We used describing function methods to analyze dead-zone nonlinearity characteristic.The simulation experiments of nonlinear system with dead-zone were carried out.The results of simulation show that system represents the phenomenon of zero deflection with step response,error curve exists peak at commutation time with sine response.In the end,we used compensation control strategy to weaken the impact of dead-zone nonlinearity on dual-motor driving servo system.Finally the simulation illustrates the effectiveness of the proposed compensation control strategy.

Decoupling Compensation Using in the Hydraulic-Servo System of Mould

2012 ◽  
Vol 184-185 ◽  
pp. 1526-1532 ◽  
Author(s):  
Liang Li ◽  
Xiong Zhou ◽  
Xiao Gang Deng
Keyword(s):  
Hydraulic System ◽  
Servo System ◽  
Mutual Interference ◽  
Two Dimensional ◽  
The Real ◽  
Compensation Control ◽  
Hydraulic Servo ◽  
System Output ◽  
Hydraulic Servo System ◽  
And Control

The hydraulic-servo system of mould is a typical two-dimensional hydraulic-servo system, what stored among pass way was handed in and uniting interfering with between every pass way of the system. Because of the connection of the load system, output and control of every pass way influencing each other, cause the coupling of load, influence the system, even cause the systematic instability. This text apply on coupling and decoupling principle, mutual interference problem of many pass way that exists in the hydraulic system of mould, is studied by decoupling compensation control. Through the theory pushing over, we bring forward the decoupling compensation method, which can solve mutual interference problem. Have verified the feasibility of this method in the real artificial experiment too, and can solve mutual interference problem in the hydraulic and systematic of mould effectively.

Current compensation control for low-cost servo system

2014 ◽  
Vol 228 (9) ◽  
pp. 715-721
Author(s):  
Bao Song ◽  
Tianhang Cheng ◽  
Xiaoqi Tang ◽  
Shiqi Zheng ◽  
Shaowu Lu
Keyword(s):  
Low Cost ◽  
Servo System ◽  
Current Compensation ◽  
Compensation Control

The Development of the Synchronous Control Technology on Four-Channel Lifting Device

2016 ◽  
Vol 693 ◽  
pp. 1826-1833
Author(s):  
Ai Wu Yu ◽  
Chuan Min Zhu
Keyword(s):  
Control System ◽  
Experimental System ◽  
Synchronization Control ◽  
Control Technology ◽  
Synchronous Control ◽  
Compensation Control ◽  
Control Precision ◽  
Simulation Results ◽  
Set Up ◽  
Control Accuracy

Motor synchronous control technology has been widely used in lifting device. The effect of Synchronous control technology to improve the precision is becoming more and more attention both at home and abroad. Based on the four channels winding ascension, we design a deviation coupling based on principle of displacement compensation control system, and use Matlab/Simulink for simulation, and research the influence law of different parameters on synchronization control accuracy. The simulation results confirmed that the strategy can satisfy the control precision. Finally, we set up the experimental system to verify the feasibility and practicability of the synchronous control system.

A Compensation Approach of Backlash Nonlinearity in Dual-Motor Driving Servo System

2013 ◽  
Vol 389 ◽  
pp. 448-453
Author(s):  
Hai Bo Zhao ◽  
Yun Guo Zhu
Keyword(s):  
Control Strategy ◽  
Linear Part ◽  
Servo System ◽  
Step Response ◽  
Compensation Control ◽  
Speed Tracking ◽  
Compensation Approach ◽  
The Impact ◽  
Backlash Nonlinearity ◽  
Nonlinearity Characteristic

Aiming at the control problem of dual-motor driving servo system with backlash nonlinearity, we proposed the model of system linear part. We used describing function methods to analyze backlash nonlinearity characteristic. The simulation experiments of nonlinear system with backlash were carried out. The results of simulation show that system represents residual self-oscillation with step response, nonstationarity with low speed tracking and error abrupt change produced by sinusoidal tracking reversing. In the end, we used compensation control strategy to weaken the impact of backlash nonlinearity on dual-motor driving servo system. Finally the simulation illustrates the effectiveness of the proposed compensation control strategy.

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