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.

Cross-Coupling Synchronization Control of High Precision Permanent Magnet Linear Motors

2011 ◽  
Vol 301-303 ◽  
pp. 1422-1427
Author(s):  
Jing Na Sun ◽  
Yong Xiao ◽  
Xiao Yu Ge ◽  
Xiao Yan Wang
Keyword(s):  
Permanent Magnet ◽  
High Precision ◽  
Control Method ◽  
Cross Coupling ◽  
Synchronization Control ◽  
Positioning Systems ◽  
Linear Motors ◽  
Synchronous Motion ◽  
Cross Coupling Control ◽  
Synchronization Performance

In this paper, a cross-coupling synchronization controller is proposed to achieve a synchronous motion for high-precision positioning systems with uncertainties and disturbances, where an additional P controller is equipped to generate cross-coupling control action. Tuning procedure of the control parameters is also provided, so that improved tracking and synchronization performance can be obtained. The key to the success of the new design is to ensure that each motor tracks its desired trajectory while synchronizing motion with others. Experiments on a positioning system with two permanent-magnet linear motors demonstrate the effectiveness of the proposed control method.

The Simulation Research of Synchronization Control Based on the Virtual Shaft Control and the Relative Coupling Control

2014 ◽  
Vol 1049-1050 ◽  
pp. 1111-1115 ◽  
Author(s):  
Huan Huan Shi ◽  
Xiao Wu ◽  
Liang Hua ◽  
Hong Gang Ji
Keyword(s):  
Control System ◽  
High Precision ◽  
Control Strategy ◽  
External Disturbance ◽  
Parameter Variation ◽  
Synchronization Control ◽  
Simulation Research ◽  
Synchronous Control ◽  
Synchronization Scheme ◽  
Main Spindle

Although the traditional synchronous control system for the virtual shaft has met the accuracy requirements of most products, it still can not fully meet the requirements, for the high precision, high synchronization control. This article proposed multi-motor synchronous control strategy based on the relative coupling control combined with virtual main spindle control, and built simulation platform by Matlab/Simulink and simulated the strategy. The simulation result shows that the synchronous control strategy mentioned in this article can overcome synchronization error brought by external disturbance and parameter variation. Moreover, it will better achieve the multi-motor synchronous control compared with the traditional virtual shaft synchronization scheme

Cross-Coupling Controller for Five Degree-of-Freedom Coplanar Nanostage

2013 ◽  
Vol 284-287 ◽  
pp. 1788-1793
Author(s):  
Van Tsai Liu
Keyword(s):  
Tracking Control ◽  
Tracking Error ◽  
Cross Coupling ◽  
Degree Of Freedom ◽  
Creep Model ◽  
Contour Error ◽  
Viscoelastic Creep ◽  
Control Scheme ◽  
Optimization Parameters ◽  
Cross Coupling Control

The proposed approach is to design a tracking controller for five degree-of-freedom coplanar nanostage which can provide high precision applications. This study propose a viscoelastic creep model, it was modeled as a series connection of springs and dampers to describe the creep effect. Then, utilize a PI controller using Taguchi method to search the optimization parameters to suppress the tracking error. Finally, a cross-coupling control scheme is proposed to eliminate the contour error which is typical in dual-axes tracking control problem. The developed approaches are numerically and experimentally verified which demonstrate performance and applicability.

Synchronized Control of Dual Linear Motors Position Servo System Based on Multi-Axes Motion Control Card

2012 ◽  
Vol 433-440 ◽  
pp. 7152-7158 ◽  
Author(s):  
Cheng Ying ◽  
Hai Chen Qin ◽  
Jian Zhou Quan
Keyword(s):  
Motion Control ◽  
Feedforward Control ◽  
External Disturbance ◽  
Servo System ◽  
Linear Motors ◽  
Control Scheme ◽  
Motion Control Card ◽  
Synchronous Error ◽  
Control Feedback ◽  
Synchronized Control

This paper introduces a position synchronized control strategy to deal with the synchronous error caused by the external disturbance in dual linear motors servo system. In order to achieve satisfactory results, a new control scheme combing feedforward control, feedback control and cross-coupled control is proposed and makes progress in decreasing the synchronous error which was shown by the experiment.

scholarly journals Adaptive Sliding Mode Control of a Nonlinear Electro-hydraulic Servo System for Position Tracking

Mechanika ◽  
2019 ◽  
Vol 25 (4) ◽  
pp. 283-290
Author(s):  
Mingxing YANG ◽  
Qi ZHANG ◽  
Xinliang LU ◽  
Ruru XI ◽  
Xingsong WANG
Keyword(s):  
Sliding Mode Control ◽  
Sliding Mode ◽  
External Disturbance ◽  
Servo System ◽  
Projection Algorithm ◽  
Adaptive Sliding Mode Control ◽  
Unknown Parameters ◽  
Adaptive Sliding Mode ◽  
Mode Control ◽  
Control Scheme

In view of the electro-hydraulic position servo system with parameter uncertainty and bounded disturbances, an improved adaptive sliding mode control scheme is proposed. The mathematical model of the valve-controlled system is first constructed with consideration of the external disturbance, matched and mismatched unknown parameters. Then, the parametric adaptive estimation laws are established by Lyapunov technique to estimate the generalized uncertainty parameters, and the discontinuous projection algorithm is used to ensure the boundedness of parameter estimation. In order to eliminate the chattering phenomenon in sliding mode control, the saturation function is designed to replace the sign function and the gain coefficient is adjustable on the sliding surface. Finally, the comparative experimental results clarify that the proposed control scheme has better control performance than the PID controller and the SMC controller.

New Cross-Coupling Control of Independent Linear Contour Errors Based on Backlash

2010 ◽  
Vol 663-665 ◽  
pp. 902-905
Author(s):  
Sheng Bao Wang ◽  
Xiao Hong Liu
Keyword(s):  
Error Control ◽  
Cross Coupling ◽  
Contour Error ◽  
Contour Tracking ◽  
Control Scheme ◽  
New Strategy ◽  
Cross Coupling Control ◽  
Simulation Results ◽  
Contour Machining ◽  
Contour Error Control

On the basis of analysis of linear contour errors model, a new strategy of independent contour error control was presented for high precision contour machining. The proposed control scheme, in which the equations of the well-known cross-coupling controller were implemented, is shown to be able to diminish the linear contour error without using any cross-feeding signals between the driving axes. The simulation results show that the proposed control scheme is effective and that better effect of the contour tracking can be obtained. As a result, the contour machining precision is improved greatly.

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