Title :
Analysis of static and dynamic FG errors for motor speed control (driven by a single Hall element sensor)
Author :
Jonokuchi, Hideki ; Hashimoto, Shinichi ; Umeda, Mikio ; Nagasaki, Yasumasa
Author_Institution :
Toshiba Corp., Nagoya, Japan
Abstract :
A driving system is described which uses a sensor in common for detecting commutation signal, motor speed signal, and rotor position signal, all to the motor coil, and which can operate as a brushless DC motor equipped only with one piece of a Hall element sensor. In this driving system, because the static jitter is 10 times or more of that of the conventional integral pattern motor speed signal (FG) detecting system, sufficient rotational precision can not be achieved by general speed feedback control. To solve this problem, it is shown that high rotational precision can be maintained by introducing a digital multinotch filter that can correct the static FG jitter. The quantization error is related to the dynamic jitter, and the effect of these two errors on the speed control performance is simulated
Keywords :
DC motors; Hall effect transducers; machine control; measurement errors; position measurement; velocity control; velocity measurement; Hall element sensor; brushless DC motor; commutation signal detection; digital multinotch filter; dynamic errors correction; motor coil; motor speed control; position signal detection; quantization error; speed signal detecting system; speed signal detection; static jitter; static jitter correction; Brushless DC motors; Brushless motors; Commutation; DC motors; Error correction; Jitter; Sensor phenomena and characterization; Sensor systems; Signal detection; Velocity control;
Conference_Titel :
Power Electronics Specialists Conference, 1991. PESC '91 Record., 22nd Annual IEEE
Conference_Location :
Cambridge, MA
Print_ISBN :
0-7803-0090-4
DOI :
10.1109/PESC.1991.162753
