Study on the Control System of the Electro-Controlled Steering Damper Based on Magnetorheological Fluid

2010 ◽  
Vol 44-47 ◽  
pp. 2627-2631 ◽  
Author(s):  
Jian Guo Cao ◽  
Xin Hua Yang ◽  
Jie Xu
Keyword(s):  
Control System ◽  
Pid Controller ◽  
High Speed ◽  
System Modeling ◽  
Magnetorheological Fluid ◽  
Steering System ◽  
Dynamic Equations ◽  
Simulation Language ◽  
Working Medium ◽  
Working Principle

This paper introduces a kind of electro-controlled steering damper’s structure and working principle which uses the magnetorheological fluid as the working medium. In order to design the controll system of the electro-controlled steering damper, the model of the steering system and the damper based on magnetorheological fluid are established through the dynamic equations, and a PID controller is used. At last, the paper simulates the controll system using a simulation language Modelica on Works, which is a simulation flatform for comp lex physical system modeling and simulation. The results show that the damper can effectively increase the stabilizing speed of the steering system, decrease the over run of the vehicle’s yaw speed, and improve the vehicle’s steering stabilization, especially when the vehicle running in high speed.

Study on the Return Control of the Electro-Controlled Steering Damper Based on Magnetorheological Fluid

2011 ◽  
Vol 80-81 ◽  
pp. 894-898
Author(s):  
Jian Guo Cao ◽  
Xin Hua Yang ◽  
Jie Xu
Keyword(s):  
Fuzzy Controller ◽  
Control Strategies ◽  
Magnetorheological Fluid ◽  
Steering System ◽  
Steering Wheel ◽  
Vehicle Speed ◽  
Pd Controller ◽  
Control Effect ◽  
Working Medium ◽  
Working Principle

The paper introduces an electro-controlled steering damper’s working principle, which uses the magnetorheological fluid as the working medium, and derives the damper’s controlling and calculating method. The steering wheel’s return control strategies of it are investigated. In order to compare the control effect of the PD controller with the fuzzy controller, a simulation model of the vehicle’s steering system is established on MATLAB/SIMULINK. Then simulate the returning process of the front wheels at medium and high vehicle speed. The results show that the vehicle’s steering system equipped with the electro-controlled damper can restrain effectively the returning overshoot of front wheels when the steering wheel is returning automatically, and the effect of the fuzzy controller is excelled the PD controller, but it demands much more to the hardware for its larger calculation amount.

The Automotive Electronic Throttle Control Based on the Non-Linear Torque Observer

2011 ◽  
Vol 467-469 ◽  
pp. 152-159 ◽  
Author(s):  
Hong Tao Zhang ◽  
Ji Du He ◽  
Jin Ping Liu
Keyword(s):  
Mathematical Model ◽  
Control System ◽  
Pid Controller ◽  
Electronic Throttle ◽  
Automotive Electronic ◽  
Control Precision ◽  
Non Linear ◽  
Working Principle ◽  
Torque Observer ◽  
Electronic Throttle Control

This paper introduces the structure and working principles of the automotive electronic throttle control system. After analyzing the non-linear factor of the system, mathematical model of the system is built up. And the working principle of non-linear torque observer is described. Then incremental PID controller and non-linear torque compensator were designed and simulated in the matlab/simulink. From the result, we can see that the control precision of incremental PID controller is poor, and it also easily has an overshoot. However, PID controller based on non-linear torque observer has a better tracking performance. It can meet control requirements very well.

Fuzzy PID Control for Fast-Steering Mirror System

2014 ◽  
Vol 568-570 ◽  
pp. 1026-1030
Author(s):  
Xue Jin Bai ◽  
Yong Ming Qiao
Keyword(s):  
Control System ◽  
Transient Process ◽  
Pid Control ◽  
Pid Controller ◽  
High Speed ◽  
Mirror System ◽  
Pid Controllers ◽  
Fuzzy Pid ◽  
Fuzzy Pid Control ◽  
Fuzzy Pid Controller

Fast-steering mirror system demands higher accuracy and fast responding speed to track targets, but the conventional PID controllers cannot meet the demands. Instead, the fuzzy PID control can greatly improve the capturing and tracking capacities to high-speed dynamic targets. So we apply the fuzzy-PID controller in the positioning loop of the stabilized system, not only improving the transient process of the control system and decreasing the overshoot, but also enhancing the accuracy of tracking stabilization and response. At the end, simulations were performed to test the effectiveness of this method through the MATLAB platform.

Research on Novel Self-Spinning High Speed On/Off Valve Based on Fuzzy-Logic Parameter Self-Tuning PID Controller

2012 ◽  
Vol 468-471 ◽  
pp. 1448-1452 ◽  
Author(s):  
Jian Chen ◽  
Jian Ping Shu ◽  
Mian Li ◽  
Qi Zhou ◽  
Zhu Ming Su
Keyword(s):  
Fuzzy Logic ◽  
Control System ◽  
Pid Controller ◽  
High Speed ◽  
Position Control ◽  
Open Loop ◽  
Axial Position ◽  
Valve Body ◽  
Loop Control ◽  
Self Tuning

The flow rate of a novel self-spinning high speed hydraulic on/off valve is regulated by changing the relative axial position (the duty cycle) of the valve spool to the nozzles located on the valve body through driving a gerotor pump using brushless direct current motor. The closed loop axial position control system of the valve spool with feedback of the axial displacement of the valve spool has shorter response time, and not more ripple of output pressure than corresponding open loop control system. A fuzzy logic parameter self-tuning PID controller is investigated to overcome nonlinearity of the control system. The simulation results show that the overshoot is decreased greatly than conventional PID controller.

A Steering Control System to Minimize Propulsion Losses of High-Speed Containerships—Part I: System Dynamics

1982 ◽  
Vol 104 (1) ◽  
pp. 1-8 ◽  
Author(s):  
R. E. Reid ◽  
J. W. Moore
Keyword(s):  
Control System ◽  
Modeling And Simulation ◽  
Time Domain ◽  
High Speed ◽  
Steering System ◽  
Performance Criteria ◽  
Domain Modeling ◽  
Added Resistance ◽  
Steering Control ◽  
Time Domain Modeling

The problem of steering control of high-speed containerships to minimize propulsion losses is addressed. The approach involves time domain modeling and simulation. A dynamic model of a containership and steering system in a seaway is constructed. Performance criteria for added resistance associated with yawing and steering are discussed. Losses resulting from yawing of the uncontrolled ship in heavy weather are shown by simulation to be significant. The results presented form a basis for design of a controller to minimize steering related losses.

Digital platform-based multi-domain virtual prototype simulation on a high-speed parallel manipulator

Robotica ◽  
2011 ◽  
Vol 30 (5) ◽  
pp. 827-835 ◽  
Author(s):  
Yang Zhiyong ◽  
Feng Wenhao ◽  
Wu Jiang ◽  
Huang Tian
Keyword(s):  
Pid Controller ◽  
High Speed ◽  
Pulse Width Modulation ◽  
System Modeling ◽  
Working Environment ◽  
Proportional Integral Derivative ◽  
Driving System ◽  
Digital Platform ◽  
Adams Software ◽  
Interface Function

SUMMARYThis paper presents how to build an all-digital co-simulation platform of a mechtronic system so as to reduce the burden and error of system modeling. In the construction of a platform, a driving system, including a motor, a pulse-width modulation (PWM) and a controller, is simulated using Matlab/Simulink. The behavior of the mechanism is analyzed using the ADAMS software. By the proper interface function for the real-time communication between two parts of the models, a virtual working environment is established. Finally, a proportional integral derivative (PID) controller verifies the validity of the digital platform.

scholarly journals Dynamic Modeling and Simulation of Control System for Pneumatic Servo Valve Using Piezoelectric Actuator

2015 ◽  
Vol 37 ◽  
pp. 153 ◽  
Author(s):  
Mohsen Heydari Beni ◽  
Hadi Homaei ◽  
Ehsan Kiani ◽  
Fatemeh Abbaspour
Keyword(s):  
Control System ◽  
Pid Controller ◽  
Analytical Approach ◽  
Controller Design ◽  
Absolute Error ◽  
Pole Placement ◽  
Servo Valve ◽  
Placement Method ◽  
Working Principle ◽  
Order State

In this study design and simulation of controller for piezoelectric pneumatic servo valve is done. The dynamic model of the valve using analytical approach and the working principle of the servo valve is analyzed. The pole placement method is used to design a controller using observed variables. The valve controls the situation and position of actuator. Then for the system, full order state observer and PID controller based on ITAE (Integral Time Absolute Error) criteria are investigated and the response of system with these controllers is shown and a comparison is done for different schemes of controller design and the best design is selected for the system.

Study on Mechanism of Active Front Steering Based on Harmonic Drive

2013 ◽  
Vol 274 ◽  
pp. 17-22
Author(s):  
Peng Gu ◽  
Guo Biao Shi ◽  
Yi Lin
Keyword(s):  
High Speed ◽  
Control Mechanism ◽  
Integrated Control ◽  
Steering System ◽  
Gear Ratio ◽  
The Self ◽  
Self Control ◽  
Harmonic Drive ◽  
Active Front Steering ◽  
Working Principle

The steering ratio of vehicle can be changed by attaching a angle, Changing the steering gear ratio can improve the safety in high-speed and comfort in low-speed and the vehicle steering stability. The paper introduces an active front steering system (AFS) based on harmonic drive, the composition and working principle of the system are analyzed, and the kinematic analysis of the system is researched, finally, the self-control mechanism and integrated control mechanism with other stability system are studied.

Investigation of 2-DOF Precision Positioning System for IC Packaging

2009 ◽  
Vol 628-629 ◽  
pp. 363-368 ◽  
Author(s):  
Xiao Mei Feng ◽  
Da Wei Zhang ◽  
L.S. Li ◽  
W.K. Liu
Keyword(s):  
Control System ◽  
Dynamic Model ◽  
Pid Controller ◽  
High Speed ◽  
Electromechanical Coupling ◽  
Dynamic Performance ◽  
Positioning System ◽  
Ic Packaging ◽  
Decoupling Mechanism ◽  
Speed And Accuracy

A new 2-DOF positioning table of high speed and accuracy, directly driven by voice coil actuator, is put forward, which can be applied to IC packaging for wafer wire bonding equipment. With the help of a novel elastic decoupling mechanism, the driving element is mounted on the baseboard, diminishing its moving inertia, improving its dynamic performance. By establishing dynamic model of VCA and positioning table, an electromechanical coupling control system based on displacement PID controller is proposed. The prototype experiment shows that the new 2-DOF positioning system is of higher speed and higher accuracy than the traditional ones.

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