PURPOSE: To stop a motor completely by synchronizing a brushless motor with a synchronous clock signal to operate and generating the synchronous clock signal in accordance with output of a rotor position detection means.
CONSTITUTION: A driving device of a brushless motor 8 is constituted of a rotor position detection circuit 1, a synchronous clock signal generation circuit 2, a clock counter 3, a counter detection circuit 4, a timing controlling circuit 5, a hold/reset circuit 6 and a current driving circuit 7. The generation circuit generates a synchronous clock signal in accordance with an output signal of the rotor position detection circuit 1. The timing controlling circuit 5 outputs signals to control the timing and period of each coil current of a stator in accordance with the signal, and the motor 8 is driven through the current driving circuit 7. The counter detection circuit 4 detects an output value of the counter 3, and above-mentioned reset circuit 6 outputs a control signal to the controlling circuit 5.
| JPH05184185 | SPEED CONTROL METHOD FOR DC BRUSHLESS MOTOR |
| JPH09312994 | BRUSHLESS MOTOR DRIVING DEVICE |
| JPH0880083 | METHOD OF DRIVING BRUSHLESS DC MOTOR |
TOZAKI YOSHIHIRO
FUKAZAWA TOSHIO
KUBOTA DAIZABURO
MIYAMOTO MAKOTO
NAGATA YUJI
| JPS5872390A | 1983-04-30 | |||
| JPS61164486A | 1986-07-25 |