Title
Fuzzy control of a class of hydraulically actuated industrial robots
Abstract
Application of a fuzzy logic controller to a class of hydraulically actuated industrial robots is investigated. A simple set of membership functions and rules are described which meets certain control requirements. An off-line routine based on the simplex method is outlined to tune the controller gains for an optimum response. The fuzzy control gains are tuned by minimizing the summation of absolute position errors over step input responses. The fuzzy logic controller is first examined through simulation of a two-link hydraulic robot of the same hydraulic configuration as many industrial manipulators. The controller has positive aspects which cannot be easily achieved by conventional control techniques. These include a fast rise-time and a well maintained damped response. The fuzzy controller is applied to an instrumented Unimate MK-II industrial hydraulic robot. The experimental results are encouraging in that the best performing control gains are found for different links with a reasonable number of trials and produce step responses with fast response and few oscillations at the set point. The controller demonstrates robustness.
Year
DOI
Venue
1996
10.1109/87.508890
IEEE Transactions on Control Systems Technology
Keywords
Field
DocType
Fuzzy control,Industrial control,Service robots,Fuzzy logic,Manipulators,Velocity control,Valves,Error correction,PD control,Instruments
Control theory,Logic Control,Optimal control,Control theory,Fuzzy logic,Robustness (computer science),Control engineering,Control system,Fuzzy control system,Robot,Mathematics
Journal
Volume
Issue
ISSN
4
4
1063-6536
Citations 
PageRank 
References 
8
1.06
4
Authors
3
Name
Order
Citations
PageRank
T. Corbet181.06
Nariman Sepehri224650.15
P. D. Lawrence325540.37