Title :
A simple positioning servo system by breaking control
Author :
Takahashi, Isao ; Itoh, Shigeru
Author_Institution :
Dept. of Electr. & Electron. Syst. Eng., Nagaoka Univ. of Technol., Japan
Abstract :
A simple positioning servo system using braking control of a brake induction motor (BIM) is described. The motor consists of an induction motor and an electromagnetic disk brake (EDB) in the same body. Two control methods cooperate together to attain precise control: sliding-mode control and fuzzy control. The controller consists of a position sensor (5000 pulses/r), a controller with a microcomputer (Intel 80286), and a chopper circuit that controls the braking torque by controlling the exciting current of the BIM. The microcomputer simplifies the circuits and permits flexibility control. Parameter identification makes the system robust and free from adjustment. The accuracy of position control errors obtained experimentally was about 0.4°
Keywords :
computerised control; fuzzy control; induction motors; microcomputer applications; position control; servomechanisms; servomotors; variable structure systems; Intel 80286; brake induction motor; braking control; chopper circuit; electromagnetic disk brake; flexibility control; fuzzy control; microcomputer; parameter identification; position control errors; position sensor; simple positioning servo system; sliding-mode control; Control systems; Electromagnetic induction; Fuzzy control; Induction motors; Microcomputers; Pulse circuits; Servomechanisms; Servomotors; Sliding mode control; Torque control;
Journal_Title :
Industry Applications, IEEE Transactions on
