| 摘要 |
The waveforms from the four windings of the biphase motor (10) are processed by speed detection logic (12) while motor current and temp. are monitored by separate logic (13). Rotor position detection (14) is driven from a switching advance and transient suppression circuit (15), producing signals for processing by unidirectional rotation logic and digital filters (16). Four power transistors (22) are driven (20) by a speed- or torque-proportional signal from selection logic (23). A motor protection block (24) monitors the current and an input block (26) with a control potentiometer (27) performs continuous speed and torque checks (30). |
