Title :
Speed control of brushless motor using low resolution sensor
Author :
Chang, Timothy ; Wang, Chung ; Cohen, Edwin
Author_Institution :
Dept. of Electr. & Comput. Eng., New Jersey Inst. of Technol., Newark, NJ, USA
fDate :
6/23/1905 12:00:00 AM
Abstract :
In this paper, the use of low resolution sensor to achieve high performance speed control is investigated. A speed dependent feedback control is used in conjunction with an input shaper to improve the transient characteristics. The use of a shaper is particularly suitable in this application since the shaper is an open loop scheme, independent of the sensor characteristics. The characteristics of the proposed control scheme is first assessed by numerical simulation, based on a detailed mathematical model of the motor. This is followed by experimental verification. From the simulated and experimental data, it is observed input shaping, using a ZVD Shaper, reduces settling time by 80%. In particular, settling to 10% of command level can be achieved in about 0.1 second. Furthermore, speed dependent control significantly improves motor response when low resolution sensor is used
Keywords :
brushless DC motors; feedback; machine control; transient response; velocity control; 0.1 s; ZVD Shaper; brushless motor; high-performance speed control; input shaper; low-resolution sensor; open loop scheme; speed dependent feedback control; transient characteristics; Brushless motors; Mechanical sensors; Open loop systems; Sensor phenomena and characterization; Sensorless control; Servomotors; Signal resolution; Synchronous motors; Torque control; Velocity control;
Conference_Titel :
American Control Conference, 2001. Proceedings of the 2001
Print_ISBN :
0-7803-6495-3
DOI :
10.1109/ACC.2001.945558
