Study on a Type of Pneumatic Force Servo System

2013 ◽  
Vol 819 ◽  
pp. 192-196
Author(s):  
Meng Nie ◽  
Jian Yong Li ◽  
Hai Kuo Shen ◽  
Hua Min Sun
Keyword(s):  
Mathematical Model ◽  
Control Strategy ◽  
Digital Simulation ◽  
Servo System ◽  
Chamber Pressure ◽  
Source Pressure ◽  
Output Pressure ◽  
Gas Source ◽  
System Output ◽  
And Control

A type of pneumatic force servo system is discussed in this paper. In this system, output pressure depends on pressure difference between two chambers of cylinder; by controlling pilot-operated reducing valve will get different cylinder chamber pressure. Dynamic mathematical model and control Strategy of this system is founded in this paper. By mathematical model and control Strategy, the digital simulation results show how system performance with different gas source pressure and rodless cavity size..

Study of Topology and Control Strategy of the Bidirectional Energy Storage Converter Based on Three-Level

2013 ◽  
Vol 397-400 ◽  
pp. 1169-1173
Author(s):  
Hong Wei Tang ◽  
Xi Kun Chen ◽  
Yan Xia Gao
Keyword(s):  
Mathematical Model ◽  
Energy Storage ◽  
Control Strategy ◽  
Lithium Battery ◽  
Decoupling Control ◽  
Midpoint Potential ◽  
Simulation Results ◽  
And Control ◽  
The Mathematical Model ◽  
Battery Module

To adapt to the requirements of the charging and discharging of the lithium battery, the paper presents a three-level based bidirectional energy storage converter topology.It has strong adaptability and can manage the charge and discharge of multi-series and parallel battery module. The mathematical model of the converter is analyzed, and the two operation modes of the converter control strategy are studied; Analysis the feed-forward decoupling control of three-level rectifier, and the variable scale factor is used to control midpoint potential. The simulation results demonstrate the feasibility of the design.

Coordinated Control of Isolated Microgrid Including Wind Power, Storage and Seawater Desalination Load

2014 ◽  
Vol 1044-1045 ◽  
pp. 276-279
Author(s):  
Yang Kai Liao ◽  
Xin Chun Shi ◽  
Chao Fu
Keyword(s):  
Wind Power ◽  
Control Strategy ◽  
Digital Simulation ◽  
Lithium Ion ◽  
Coordinated Control ◽  
Seawater Desalination ◽  
Time Simulation ◽  
Power Storage ◽  
Battery Energy ◽  
And Control

The establishment of isolated microgrid including wind power, storage and seawater desalination load is of significant important to the use of renewable energy and the supply of fresh water resources in island region. A real-time simulation platform based on PXI and PC is built to test the operation and control of the isolated microgrid in this paper. The digital simulation model is introduced and the coordinated control strategy of the microgrid is discussed in detail. This strategy makes use of the controllability of seawater desalination load, coordinates supercapacitor and lithium-ion battery energy storage so as to maintain the balance and stability of the isolated microgrid. Finally, the simulation results show that the correctness and feasibility of the proposed coordinated 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.

scholarly journals The switching control strategy of redundant electromechanical servo system based on the compound sliding mode control

2021 ◽  
Vol 268 ◽  
pp. 01069
Author(s):  
Zonglun Li ◽  
Zhiyuan Yu ◽  
Menglong Jiang
Keyword(s):  
Sliding Mode Control ◽  
Control Strategy ◽  
Sliding Mode ◽  
Servo System ◽  
Basic Structure ◽  
Mode Control ◽  
Control Functions ◽  
System A ◽  
Exponential Reaching Law ◽  
And Control

Aiming to resolve the limitations of robustness and stability in switching working modes of dual redundancy electric servo system, a control strategy based on sliding mode control is suggested. By analyzing the electromechanical servo system’s basic structure and working theory, a mathematical model is created to enable the design of new control functions. Taking into account the influence of the internal parameter perturbation of the electromechanical servo system during the switching between working modes, the sliding mode control is used to enhance system robustness, and the method of combining the latest saturation function and the exponential reaching law is used to minimize the system chattering. The simulation results and analysis show that the control strategy can effectively improve the robustness and control accuracy of the system.

Small-Signal Equivalent Circuit Modeling and Controller Design of DC/DC Converter Based on Matlab

2014 ◽  
Vol 1070-1072 ◽  
pp. 1586-1591
Author(s):  
Xiao Long Xiao ◽  
Xiao Jun Lu ◽  
Jian Wei Yi ◽  
Xiao Hua Ding
Keyword(s):  
Mathematical Model ◽  
Control Strategy ◽  
Model Building ◽  
Controller Design ◽  
Dynamic Performance ◽  
Feedback System ◽  
Small Signal ◽  
Loop Feedback ◽  
And Control ◽  
The Mathematical Model

The model-building of DC/DC converter is the key to design the control of system. It is important to study DC/DC converter stability and dynamic performance. A small-signal model of buck/boost circuit was built by average state-space. By analyzing the transfer function of buck/boost circuit, a voltage closed-loop feedback system was designed. Building system of simulation circuit in the Matlab, the result of simulation shows the system has a good static and dynamic performance. It verifies the rationality of the mathematical model and control strategy. It verifies the rationality of the mathematical model and control strategy.

Research on High-Quality Dual-Redundancy Aircraft Rudder Servo System Simulation

2014 ◽  
Vol 519-520 ◽  
pp. 1347-1352
Author(s):  
Wei Wu
Keyword(s):  
Mathematical Model ◽  
Steady State ◽  
Dynamic Response ◽  
Control Strategy ◽  
System Simulation ◽  
Servo System ◽  
High Quality ◽  
Matlab Simulink

In order to improve the reliability of aircraft, a high quality dual-redundancy rudder servo system is designed. Dual-redundancy BLDCM and redundancy strategy are applied. A dual-redundancy BLDCM mathematical model is established. Using matlab/simulink, the simulation of motor is given. The control strategy based on position loop, velocity loop and current balance loop is designed. The simulation of dual-redundancy rudder servo system shows that the system has a good dynamic response and high steady-state accuracy. The performance of the servo system is excellent.

CNC Servo System Base on PMSM

2013 ◽  
Vol 331 ◽  
pp. 267-270 ◽  
Author(s):  
Meng Xiong Zeng ◽  
Wen Ouyang
Keyword(s):  
Mathematical Model ◽  
System Design ◽  
Control Strategy ◽  
Rotational Speed ◽  
Closed Loop ◽  
Servo System ◽  
Current Loop ◽  
Paper Study ◽  
Matlab Simulink ◽  
Closed Loops

The paper study object is the CNC servo system, and it presented three closed-loops control strategy based on PMSM. Through dynamic mathematical model of current loop, rotational speed loop and position loop were established and simplified. The closed-loop regulator was designed. The system was corrected by the controller. The simulation, tuning and calculation of the closed-loop were carried in MATLAB/SIMULINK. The results indicated that the system design was correct, and the desired effect of control was achieved.

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