| 摘要 |
<p>PURPOSE:To stably change the modes in a mode switching state without using a servo circuit for a mode motor, etc., by supplying the impulsive drive voltage whose duty is set in accordance with the load used for change of modes to the mode motor. CONSTITUTION:When a mode is designated by an operation switch, etc., a microcomputer 4 inputs the data corresponding to the designated mode, i.e., the data on one of those encoded values obtained by a rotary encoder 2 set previously in response to each mode. Then a mode motor 3 is driven based on the designated mode value and the encoded value of the encoder 2. For this purpose, the control signal is outputted to show the revolving direction of the stop of the motor 3 together with a pulse signal having its variable duty. Thus the motor 3 is driven. Thus it is possible to stably change the modes in a mode switching state without using any servo circuit, etc.</p> |
