Electro-Hydraulic Servo System Control Technology Based on Fuzzy-Multi-PID

2009 ◽  
Author(s):  
Xiaole Yang ◽  
Yuanliang Zhang ◽  
Wenlong Zhao
Keyword(s):  
Servo System ◽  
System Control ◽  
Control Technology ◽  
Hydraulic Servo ◽  
Hydraulic Servo System

Diagonal Recurrent Neural Network-Based Electro-Hydraulic Servo System Control

2013 ◽  
Vol 336-338 ◽  
pp. 581-584 ◽  
Author(s):  
Ye Lv ◽  
Jing Ma ◽  
De Cun He ◽  
Xiang Gao
Keyword(s):  
Neural Network ◽  
Recurrent Neural Network ◽  
Pid Control ◽  
Servo System ◽  
System Structure ◽  
System Control ◽  
Control Effect ◽  
External Interference ◽  
Hydraulic Servo ◽  
Hydraulic Servo System

The electro-hydraulic servo system gradually processes toward the fast, high-power and high-precision direction. The traditional PID control needs to coordinate the contradiction between rapidity and stability, and cannot meet the system performance requirements in the case of parameter variations and external interference. Based on electro-hydraulic servo system structure and principles, system mathematical model was established, and Diagonal Recurrent Neural Network (DRNN)-based adaptive PID controller was designed and compared with positional PID control. The simulation results show that: DRNN adaptive PID control effect is superior to positional PID control, which can effectively improve the system dynamic and anti-interference performance, and has strong self-learning and adaptive capacity.

Optimization Design of CVT Electro-Hydraulic Servo System Based on H∞ Control

2013 ◽  
Vol 385-386 ◽  
pp. 823-826
Author(s):  
Yu Qin Wang ◽  
Quan Sheng Jiang ◽  
Han Sheng Yang
Keyword(s):  
Robust Control ◽  
Control Algorithm ◽  
Optimization Design ◽  
Ride Comfort ◽  
Servo System ◽  
Control Model ◽  
System Control ◽  
Robust Controller ◽  
Hydraulic Servo ◽  
Hydraulic Servo System

In order to improve ride comfort and reduce the sense of frustration generated by the car when shifting, H robust control algorithm is proposed to optimize the design of CVT electro-hydraulic servo system. The CVT electro-hydraulic servo system is optimized by the development of system control model and the design of H∞ robust controller. The simulation result indicates that the systems uncertainties can be optimized effectively by the H∞ controller, while the systems anti-interference ability and robustness is improved obviously.

Study of Hydraulic Servo System Based on Fuzzy Sliding Mode Algorithm

2013 ◽  
Vol 753-755 ◽  
pp. 2674-2678
Author(s):  
Kun Yang ◽  
Cai Jun Liu ◽  
Shu Min Liu
Keyword(s):  
Control Algorithm ◽  
Sliding Mode ◽  
Servo System ◽  
Time Varying ◽  
External Interference ◽  
System A ◽  
Hydraulic Servo ◽  
Fuzzy Sliding Mode ◽  
Hydraulic Servo System ◽  
Position Servo

Based on the situation that the hydraulic position servo system is easily influenced by the external interference and the parameters of which are different with time-varying, the fuzzy control can soften the buffeting and the sliding algorithm has no the same problems as the hydraulic position servo system, a brandly-new fuzzy sliding control algorithm is designed. In the simulation process, within the parameters of simulated time-varying and outside strong interference, the results show that the hydraulic servo system based on fuzzy sliding mode control algorithm has a greater resistance to internal and external interference and time-varying parameters.

The Modeling and Control of the Hydraulic Servo System by Using On-Off Valve

2000 ◽  
Author(s):  
Xuanyin Wang
Keyword(s):  
Servo System ◽  
Mathematic Model ◽  
Hydraulic Cylinder ◽  
Servo Control ◽  
Linear Quadratic ◽  
Modeling And Control ◽  
Hydraulic Servo ◽  
Self Tuning ◽  
Hydraulic Servo System ◽  
And Control

Abstract This paper researches on the hydraulic servo system by using ordinary on-off valves. The mathematic model of an asymmetric hydraulic cylinder servo control system is built, and its characteristic is analysed here. To reduce the static and dynamic characteristic differences between forward and reverse motion of asymmetric cylinder, and improve system’s performance, a self-tuning linear quadratic gaussian optimum controller (SLQG) is designed successful. In the end, an asymmetric hydraulic cylinder servo system of paint robot is researched. The result shows that the above method is effective.

Sign in / Sign up

Export Citation Format

Share Document