Title :
A method of improving position precision based on fuzzy control
Author :
Deng, Chao ; Liu, Qian ; Wu, Jun
Author_Institution :
Sch. of Mech. Sci. & Eng., Huazhong Univ. of Sci. Technol., Wuhan, China
Abstract :
This paper discusses how to improve the position precision of semi-closed loop servo system, which consider system performance deterioration. The degradation of position precision and dynamic response characteristics leads to the performance deterioration of the system. The support vector machine (SVM) is chosen to model and predict position error, and the predicted error is fed back to the input entry to compensate system error. The fuzzy control is modified to improve dynamic response characteristics and reach a high degree of position precision. The simulation and experimental results show that combining the improved fuzzy control with predicted position error feedback has a high degree of position precision and a high degree of dynamic response characteristics.
Keywords :
closed loop systems; fuzzy control; position control; servomechanisms; support vector machines; dynamic response; fuzzy control; position error feedback; position precision; semi-closed loop servo system; support vector machine; Electric variables control; Error compensation; Error correction; Fuzzy control; Machining; Open loop systems; Position measurement; Servomechanisms; Sliding mode control; Three-term control; fuzzy control; position precision; semi-closed loop servo system; support vector machine;
Conference_Titel :
Control and Automation, 2009. ICCA 2009. IEEE International Conference on
Conference_Location :
Christchurch
Print_ISBN :
978-1-4244-4706-0
Electronic_ISBN :
978-1-4244-4707-7
DOI :
10.1109/ICCA.2009.5410515
