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

fYear

2009

fDate

9-11 Dec. 2009

Firstpage

1382

Lastpage

1387

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICCA.2009.5410515

Filename

5410515