Study on the Multi-Axis Motion System Based on EtherCAT

2011 ◽  
Vol 71-78 ◽  
pp. 3548-3552
Author(s):  
Jie Jia ◽  
Gen Hua Zhang ◽  
Jian Yong Lai ◽  
Huan Ling
Keyword(s):  
Software Design ◽  
Pid Control ◽  
Data Transmission ◽  
High Speed ◽  
Control Algorithm ◽  
Response Speed ◽  
Velocity Control ◽  
Motion System ◽  
Novel Method ◽  
Synchronization Accuracy

To obtain a faster response speed and higher synchronization accuracy, the paper firstly discusses the difficulties and disadvantages of organizing servo motion network with traditional fieldbus. Then, a novel method for constructing multi-axis motion system based on EtherCAT is presented. With DSP and an improved PID control algorithm, the hardware and software design is introduced in details. The system has realized high-speed remote data transmission and high-precision velocity control for Multi-axis which the traditional fieldbus can’t achieve.

The Improved Design of Test Machine Linear-Velocity Closed-Loop Control Circuit

2013 ◽  
Vol 365-366 ◽  
pp. 874-877
Author(s):  
Chang Hai Li ◽  
Yuan Tao Yu ◽  
Shi Yang Ma ◽  
Yan Chun Liu
Keyword(s):  
Pid Control ◽  
Control Algorithm ◽  
Response Speed ◽  
Test Machine ◽  
Static Error ◽  
Loop Control ◽  
Improved Design ◽  
Value Changes ◽  
The Given ◽  
Control Accuracy

Incremental PID has its shortcomings: great integral truncation effect, static error and spillover affect. In the control system, the controller system is required having a quick response speed, and also a certain anti-interference ability. When adopting the improved differential PID control algorithm, only the output differential is made, instead of the given values. So, when a given value changes, the output will not change, and the controlled quantity change is usually mild, in which case the control accuracy is improved, and the system dynamic characteristics is greatly improved.

scholarly journals A Novel Method for Tuning PID Controller

2013 ◽  
Vol 6 (1) ◽  
pp. 62-74
Author(s):  
Abidaoun H. shallal ◽  
Rawaa A. Karim ◽  
Osama Y. Al-Rawi
Keyword(s):  
Computer Technology ◽  
Pid Control ◽  
Pid Controller ◽  
Control Algorithm ◽  
The Novel ◽  
Operation Conditions ◽  
Wide Range ◽  
Novel Method ◽  
Mechanical Performances ◽  
Dc Servomotor

Proportional integral derivative (PID) control is the most commonly used  control algorithm in the industry today. PID controller popularity can be attributed to the  controller’s effectiveness in a wide range of operation conditions, its functional simplicity, and the ease with which engineers can implement it using current computer technology . In this paper,the Dc servomotor model is chosen according to his good electrical and mechanical performances more than other Dc motor models , discuss the novel method for  tuning PID controller and comparison with Ziegler - Nichols method from through parameters of transient response of any system which uses PID compensator

Design of Optimum Controller of APT Fine Tracking Control System

2013 ◽  
Vol 712-715 ◽  
pp. 2738-2741 ◽  
Author(s):  
Ming Qiu Li ◽  
Shu Hua Jiang
Keyword(s):  
Pid Control ◽  
Tracking Control ◽  
Control Algorithm ◽  
Tracking System ◽  
Dynamic Performance ◽  
Tracking Error ◽  
Stable State ◽  
Response Speed ◽  
Optimum Control ◽  
Performance Requirements

APT (Acquisition, Pointing, and Tracking) system of space laser communication adopts compound axis structure; it consists of coarse tracking and fine tracking system. Its response speed and tracking precision mainly rests with the fine tracking system. Traditional PID control algorithm often is used in APT fine tracking system. In order to improve the dynamic performance of the system and decrease the tracking error, optimum control technology was adopted in this paper. On the basis of considering the system dynamic performance requirements and tracking precision requirement, optimum controller was designed. The simulation result shows that the bandwidth of APT fine tracking system is up to 1310 Hz, and the stable state error is less than 0.002. Compared with PID control, optimum control can improve the tracking performance of system.

Motion Control Analysis of the Fruit-Trees Robot

2011 ◽  
Vol 135-136 ◽  
pp. 1179-1182
Author(s):  
Jia Ao Yu ◽  
Min Cang Fu
Keyword(s):  
Pid Control ◽  
Control Algorithm ◽  
Response Speed ◽  
Fruit Trees ◽  
Open Loop ◽  
Control Analysis ◽  
Open Loop Control ◽  
Loop Control ◽  
Straight Line ◽  
Motor Control System

The article tracks the fruit-trees robot, and analyzes the fruit-trees robot’s dual-motor control system. Based on the speed incremental PID closed-loop control algorithm of the step DC motor, the PID controller’s proportional coefficient, integral coefficient and differential coefficient is concluded. It demonstrates from the stimulations and experiments that the usage of speed incremental PID control do better at the response speed and stability than the open-loop control motor when the robot is run by a straight line on the ground at the 3000rpm.

A Novel Two-Degrees-of-Freedom Voice Coil Motor and its PID Controllers for Linear and Rotary Motions

2013 ◽  
Vol 303-306 ◽  
pp. 1635-1640
Author(s):  
Xi Qing Jia ◽  
Shou Bin Liu
Keyword(s):  
Pid Control ◽  
High Speed ◽  
Control Algorithm ◽  
Degrees Of Freedom ◽  
Voice Coil Motor ◽  
Settling Time ◽  
Servo Control ◽  
Pid Controllers ◽  
Two Degrees Of Freedom ◽  
Actual Environment

A two-degrees-of-freedom voice coil motor and its control system are proposed for linear and rotary motions with high speed. This VCM consists of two individual motion parts driven by two separated DSP embedded controllers. For servo control of the VCM, an improved PID control algorithm is adopted. The performance of the control algorithm is evaluated under actual environment. When the targets of position and angle are set at 5mm and 15°, the time response shows 48ms and 70.4ms settling time with 5μm and 3’ steady state error without overshoot. Settling time is reduced to 36% as compared to that of original PID controller.

Electronic Tension Control of High-Speed and Active Sending Line Based on Fuzzy PID Control

2011 ◽  
Vol 338 ◽  
pp. 677-684 ◽  
Author(s):  
Jun Pan ◽  
Xiao Yun Wang ◽  
Wen Hua Chen ◽  
Shi Wei Xu ◽  
Hong Bin Shen ◽  
...  
Keyword(s):  
Pid Control ◽  
High Speed ◽  
Control Algorithm ◽  
Small Diameter ◽  
Tension Control ◽  
Fuzzy Pid ◽  
Motor Speed ◽  
Fuzzy Pid Control ◽  
Control Precision ◽  
Working Principle

In the case of small diameter( 10000 r/min)winding, high-speed initiative electronic tension control for sending line was designed to solve the problem that the winding motor speed changes at the start and down state and increasing the size of the coil wound level lead to tension fluctuation. The structure, working principle and the factors that affect the tension fluctuation were discussed in detail. The transfer function of this system was deduced, and the Fuzzy PID control algorithm was also introduced to the system. The model of the Fuzzy PID control algorithm and the conventional PID control algorithm were established using MATLAB/SIMULINK tool, The simulation results show that the fuzzy PID control is better than the conventional PID control in improving the dynamic response of the tension controller, furthermore, the control precision and in terms of robustness is showed.

Intelligent Car Direction Control Based on Fuzzy PID

2012 ◽  
Vol 466-467 ◽  
pp. 1320-1324 ◽  
Author(s):  
Guo Liang ◽  
Hong Li Gao ◽  
Xiao Cheng Zhang
Keyword(s):  
Pid Control ◽  
Control Algorithm ◽  
Response Speed ◽  
Control Model ◽  
Intelligent Vehicle ◽  
Fuzzy Pid ◽  
Fuzzy Pid Control ◽  
Pid Algorithm ◽  
Direction Control ◽  
Control Response

Direction control is the decisive factors in intelligent car race. This paper used OV7620-CMOS as sensor, with steering gear as direction ac-tuators. Put forward intelligent car direction control model based on fuzzy PID algorithm. Experimental results show that fuzzy PID control algorithm is to improve the operation of the intelligent vehicle direction control response speed and the accuracy is very effective.

Velocity Control Method for Continuous Short Line Segment High-Speed Machining Based on Transition of Parametric Spline

2010 ◽  
Vol 97-101 ◽  
pp. 2407-2411 ◽  
Author(s):  
Li Bing Zhang ◽  
You Peng You ◽  
Jun He ◽  
Jun Liu
Keyword(s):  
High Speed ◽  
Control Algorithm ◽  
Control Method ◽  
Machining Efficiency ◽  
Velocity Control ◽  
Short Line ◽  
Spline Curves ◽  
Look Ahead ◽  
Short Line Segment ◽  
Simulation And Experiment

To enhance the velocity profile’s smoothness and machining efficiency of continuous short line segments, a velocity smooth control algorithm was presented based on the transition of cubic parametric spline curves. The transitional mathematical model was constructed, and an improved S-shaped jerk-limited acceleration/deceleration algorithm with look-ahead was adopted for smoother velocity profiles. The simulation and experiment results showed that machining efficiency was greatly improved, and smoother velocity profile was achieved, which approved the feasibility and validity of the proposed method.

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