| 摘要 |
PROBLEM TO BE SOLVED: To sense dehydration speed in the dehydration by the use of a speed sensor for the effective dehydration. SOLUTION: A fixed PWM0 signal is outputted through a microcomputer 8c when driving a motor 6. The motor 6 is controlled by a dehydration speed pattern determined by controlling the PWM0 duty to initialize the maximum acceleration, minimum acceleration and accumulated rotational frequency of the motor. Then, the rotor position detecting signals HA-l -Hc-l of the motor 6 are measured through a rotor position detecting circuit 15. The initial fixed section of the motor drive measures the reduction amount of speed after the elapse of a fixed time. When the reduction amounts of the speed and maximum allowance are judged to be the reduction amount of the speed >the reduction amount of the maximum allowance, the deviation of a cloth is judged to be excessive and the motor 6 is stopped to correct the deviation of the cloth. In the contrary case, the control is returned to the PWM0 duty control. |
