Quick and precise position control of ultrasonic motor using hybrid control
โ Scribed by Tomonobu Senjyu; Hiroshi Miyazato; Katsumi Uezato
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 768 KB
- Volume
- 116
- Category
- Article
- ISSN
- 0424-7760
No coin nor oath required. For personal study only.
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## Abstract Driving a permanent magnet synchronous motor (PMSM) requires the rotor position information to control the motor torque, and this is generally detected by mechanical position sensors such as an encoder or a resolver. However, these sensors increase the machine size and the cost of the d
This paper proposes a drive system for a three-phase hybrid stepping motor, combining sensorless closed-loop control with conventional open-loop control. It is characterized by sophisticated control providing both prevention of pulling out from synchronism and suppression of natural rotor oscillatio