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.

Design of Compact 6-DOF Precision Aligner for Micro-Assembly

2009 ◽  
Author(s):  
Yong-Hwan Yoo ◽  
Yeon wook Sung ◽  
Soo-Hun Lee ◽  
Min-Sung Hong ◽  
Moon G. Lee ◽  
...  
Keyword(s):  
High Resolution ◽  
Pid Control ◽  
Degrees Of Freedom ◽  
Voice Coil Motor ◽  
Micro Scale ◽  
Micro Assembly ◽  
Kinematic Design ◽  
6 Degrees Of Freedom

This work will develop a 6 Degrees Of Freedom (DOF) precision aligner with a small size and a high resolution for the assembly of the micro-scale parts used in mobile electronics. The arrangement of actuators in the aligner is symmetrical, based on kinematic design. A VCM (Voice Coil Motor) actuator that is small and reliable will be applied to this aligner system. This paper presents the combination of two modules to form the mechanism for the 6-DOF precision aligner. The first is a stage that can control XY θZ motion, while the second can control Z motion, i.e. Z tilt motion. According to its specifications, it is expected to satisfy precision requirements. Several tests will be carried out to confirm the specifications with PID control.

scholarly journals Simulation analysis of efficiency and stability for vehicle’s ABS control on combined steering and braking maneuvers

2019 ◽  
Vol 272 ◽  
pp. 01024 ◽  
Author(s):  
Feng YU ◽  
Jun XIE
Keyword(s):  
High Speed ◽  
Control Algorithm ◽  
Degrees Of Freedom ◽  
Simulation Analysis ◽  
Stability Control ◽  
Vehicle Stability ◽  
Slip Ratio ◽  
Braking Performance ◽  
Braking System ◽  
The Stability

Eight degrees of freedom vehicle model was established. Using the method of fuzzy control, the ABS control algorithm was designed based on slip ratio. Simulation analysis was done at speed of 15m/s, 20m/s, 25m/s under turning braking. The results show that the vehicle braking performance and vehicle stability at middle or low speed was improved by using the ABS controller, but qualitative analysis shows that phenomenon of vehicle instability was appeared at high-speed conditions. The turning braking stability under ABS controller was judged quantificationally by the stability judging formula. The results show that the requirements of stability control could not meet with only Anti-lock Braking System.

scholarly journals Two-Degrees-of-freedom Control for High-Speed and Highly Precise Linear Actuator on Spinstand

2006 ◽  
Vol 60 (7) ◽  
pp. 1095-1101
Author(s):  
Akihiro Naganawa ◽  
Masashi Fujieda ◽  
Shigeki Mori ◽  
Takayuki Hoshino ◽  
Goro Obinata ◽  
...  
Keyword(s):  
High Speed ◽  
Degrees Of Freedom ◽  
Linear Actuator ◽  
Two Degrees Of Freedom

2DOF Controller Tuning

2015 ◽  
Vol 18 ◽  
pp. 57-64
Author(s):  
Miluse Viteckova ◽  
Antonin Vitecek
Keyword(s):  
Time Delay ◽  
Analytical Method ◽  
Degrees Of Freedom ◽  
Point Of View ◽  
Pid Controllers ◽  
Two Degrees Of Freedom ◽  
First Order ◽  
Quality Of Control ◽  
Dominant Pole

At present the two degrees of freedom (2DOF) controllers are more often available. These controllers enable to tune both from point of view of the desired variable and the disturbance variable as well. It allows increase the overall quality of control. For the tuning of the 2DOF controllers to date there are only a few suitable methods. This paper is devoted to the tuning of the 2DOF PI and PID controllers by the multiple dominant pole method (MDPM) for first order plants and integrating plants with time delay. It is an analytical method and it is shown that by the corresponding tuning of the 2DOF controllers it is possible to obtain the non-oscillatory servo and regulatory step responses without overshoots. The use is demonstrated in the example.

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.

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.

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