| 摘要 |
PROBLEM TO BE SOLVED: To obtain a motor controller which can control a DC motor more simply, according to the load. SOLUTION: When the phase-angle time reaches a phase-angle set value, a triac is ignited, and the driv of the DC motor is phase-controlled (steps 100 to 150). On the basis of the interteminal voltage of the DC motor, the load time is detected according to whether the time in which the interterminal voltage is 0V is long or short (steps 160, 170). The detected load time is compared with the phase-angle set value, and whether the output and the load of the DC motor are large or small is judged. When the output is large, the phase-angle set value is increased, and the ignition timing of the triac is made fast (steps 180 to 210). |
