A two-layered fuzzy logic controller for proportional hydraulic system

Author

Pratumsuwan, Pornjit ; Thongchai, Siripun

Author_Institution

Teacher Training in Mech. Eng. Dept., King Mongkut´´s Univ. of Technol. North Bangkok, Bangkok, Thailand

fYear

2009

fDate

25-27 May 2009

Firstpage

2778

Lastpage

2781

Abstract

Existing fuzzy control methods do not perform well when applied to proportional hydraulic systems (PHS) containing nonlinearities arising from unknown deadzones. In this paper, a two-layered fuzzy logic controller is proposed for controlling a PHS with deadzones. The two-layered control structure consists of a fuzzy logic-based precompensator followed by a usual fuzzy PD controller. This system was implemented for PHS position control. The results show that a two-layered fuzzy logic controller has superior performance compared to usual fuzzy PD controller. In addition, the proposed scheme is robust to disturbance.

Keywords

PD control; compensation; control nonlinearities; fuzzy control; hydraulic control equipment; dead zone; fuzzy PD controller; nonlinearity; precompensator; proportional hydraulic system; two-layered fuzzy logic controller; Control systems; Error correction; Fuzzy control; Fuzzy logic; Hydraulic systems; PD control; Proportional control; Servomechanisms; Steady-state; Valves; deadzones; fuzzy logic-based precompensator; proportional hydraulic system; twolayered fuzzy logic controller;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics and Applications, 2009. ICIEA 2009. 4th IEEE Conference on

Conference_Location

Xi´an

Print_ISBN

978-1-4244-2799-4

Electronic_ISBN

978-1-4244-2800-7

Type

conf

DOI

10.1109/ICIEA.2009.5138715

Filename

5138715