| 摘要 |
PROBLEM TO BE SOLVED: To allow the same motor to control drums, etc., different in inertia in a variable display part by providing a variable display with a fluctuating mechanism including a motor and providing a fluctuating mechanism control means controlling the fluctuating mechanisms different in inertia. SOLUTION: The variable display of a game panel is provided with a variable display driving part including three rotary drums and the driving part is provided with a stepping motor(SM) 200 as a drum motor. SM 200 is energize- controlled by a PWM waveform 211 prepared by CPU 202 according to a display control signal and, at the time of using a rotary drum of inertia different from that used until then, only the change of software is required for corresponding. In addition, at the time of shifting from fast rotation to slow rotation, a PWM waveform with a duty ratio in the middle of respective duty ratios at a high speed and at a low speed is outputted to smoothly switch the speed. |
