scholarly journals 1A2-P17 Development of precise attitude and position control system by the drive of the wire(Mechanism and Control for Wire Actuation System)

2013 ◽  
Vol 2013 (0) ◽  
pp. _1A2-P17_1-_1A2-P17_3
Author(s):  
Naoyuki OUKO ◽  
Shuhei TAKAHASHI ◽  
Tsubasa TAKAYA ◽  
Hisayuki AOYAMA
Keyword(s):  
Control System ◽  
Position Control ◽  
Actuation System ◽  
The Wire ◽  
And Control ◽  
Wire Mechanism ◽  
Position Control System

Electro-Hydraulic Servo Central Position Control System of Strip Based on the Principle of Differential Capacitance

2011 ◽  
Vol 291-294 ◽  
pp. 2943-2948
Author(s):  
Bao Quan Jin ◽  
Yan Kun Wang
Keyword(s):  
Control System ◽  
Position Control ◽  
Differential Capacitance ◽  
Central Position ◽  
Good Reliability ◽  
Nonlinear Characteristics ◽  
Hydraulic Servo ◽  
And Control ◽  
The Impact ◽  
Position Control System

There are some problem for Strip transmission process, such as low deviation information accuracy , poor reliability, poor control results,the electro-hydraulic servo central position control system of Strip based on the principle of differential capacitance was designed. The differential connection is used for eliminating signal drift and the nonlinear characteristics，high frequency power supply is used for reducing output impedance and improving the system bandwidth, double shielded is used for eliminating the impact of parasitic capacitance, the electro-hydraulic servo central position control system based on fuzzy PID is designed. Research shows that the measuring circuit and control system are with high precision, good reliability, maintenance-free advantages.

Dynamic Modeling and Controller Design for a Piezoelectric Actuation System Used for Machine Tool Control

1999 ◽  
Author(s):  
Paul Mayhan ◽  
K. Srinivasan ◽  
Sarawoot Watechagit ◽  
G. Washington
Keyword(s):  
Control System ◽  
Machine Tool ◽  
Dynamic Model ◽  
Position Control ◽  
Model Parameters ◽  
Piezoelectric Actuation ◽  
Nonlinear Dynamic Model ◽  
Low Frequencies ◽  
Actuation System ◽  
Position Control System

Abstract The dynamic model of a commercially available piezoelectric actuation system intended for use in a machine tool position control system is presented, and its fidelity to observed behavior evaluated. The components of the actuation system are presented and an available nonlinear dynamic model form for piezoelectric actuators, capable of representing actuator hysteresis, used as the basis for the system dynamic model. Parameters in the dynamic model are obtained from manufacturer’s specifications. The resulting actuator model is combined with a nonlinear model of the amplifier, the resulting system model forming the basis of a SIMULINK simulation. System responses based on the simulation are compared with experimentally measured responses. The agreement between simulation and experimental responses is reasonably good at low frequencies, and the model is used for preliminary closed loop position control system evaluations. Specific recommendations for improvement in model accuracy are also made.

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