scholarly journals Nonlinear dynamic analysis and control of a hydraulic press electro-hydraulic servo system

2018 ◽  
Vol 38 (3-4) ◽  
pp. 1594-1606
Author(s):  
Chin-Tsung Hsieh ◽  
Chien-Pang Lai
Keyword(s):  
Dynamic Analysis ◽  
Nonlinear Dynamic ◽  
Nonlinear Dynamic Analysis ◽  
Servo System ◽  
Hydraulic Press ◽  
Hydraulic Servo ◽  
Hydraulic Servo System ◽  
And Control

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.

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.

Trajectory Tracking and Control Algorithm for Precision Parallel Robot

2019 ◽  
Vol 23 (2) ◽  
pp. 237-241
Author(s):  
Shanshan Chen ◽  
Keyword(s):  
Response Time ◽  
Trajectory Tracking ◽  
Control Algorithm ◽  
Servo System ◽  
Parallel Robot ◽  
System Model ◽  
Upper And Lower Bounds ◽  
Hydraulic Servo ◽  
Hydraulic Servo System ◽  
And Control

When the state of the robot reaches the smooth sliding plane, the current algorithm will generate high-frequency chattering, resulting in larger tracking error and longer response time. To solve these problems, we have proposed a trajectory tracking and control algorithm based on exponential reaching rate. The coordinate system of parallel robot system is established, and the kinetic energy and potential energy of the system are calculated. The results are brought into the Lagarnge equation to find the dynamic model of the system. The power amplifier, electro-hydraulic servo valve, hydraulic cylinder and its load are taken as generalized controlled objects, and the hydraulic servo system model is established. The exponential approaching rate is introduced to design the dynamics model and the trajectory tracking sliding controller of the hydraulic servo system model. By adjusting the upper and lower bounds of the external disturbance of the controller, the control rate is changed, the buffeting occurrence is reduced, and the response time is shortened, to realize the low error tracking of any trajectory of the robot. The experimental results show that the trajectory of the robot can be adjusted quickly and the desired trajectory is better tracked by the end.

scholarly journals Nonlinear dynamic analysis and control design of a solvent-based post-combustion CO2 capture process

2018 ◽  
Vol 115 ◽  
pp. 397-406 ◽  
Author(s):  
Xiao Wu ◽  
Jiong Shen ◽  
Yiguo Li ◽  
Meihong Wang ◽  
Adekola Lawal ◽  
...  
Keyword(s):  
Dynamic Analysis ◽  
Co2 Capture ◽  
Nonlinear Dynamic ◽  
Nonlinear Dynamic Analysis ◽  
Control Design ◽  
Capture Process ◽  
And Control
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