초록 ▼

A load drive control system for use with an automobile one-touch window glass or sunroof opening and closing system or antenna vertical movement control system includes a signal holding switching circuit responsive to an instruction signal for driving a reversible drive motor in the forward or rever

A load drive control system for use with an automobile one-touch window glass or sunroof opening and closing system or antenna vertical movement control system includes a signal holding switching circuit responsive to an instruction signal for driving a reversible drive motor in the forward or reverse direction and also to a motor drive current detection signal and functioning to hold the forward or reverse rotation of the motor within a predetermined load range and emergency stopping the motor when the motor load current gets out of the predetermined range. It also includes a signal hold inhibiting circuit to permit a desired extent of motor rotation to be obtained according to the forward or reverse drive instruction signal.

대표청구항 ▼

A load drive control system comprising: instruction means for selectively producing forward and reverse drive instruction signals for starting the driving of a controlled load in forward and reverse directions respectively; signal holding switching means for holding a forward or reverse signal corre

A load drive control system comprising: instruction means for selectively producing forward and reverse drive instruction signals for starting the driving of a controlled load in forward and reverse directions respectively; signal holding switching means for holding a forward or reverse signal corresponding to the forward or reverse drive instruction signal from said instruction means; said instructions means comprising an automatically-restoring switch which switches by receiving an actuation force to generate one of said instruction signals and restores when the actuation force is released to stop the generation of the one instruction signal; reversible motor means for driving said load in either forward or reverse direction; means responsive to said signal holding switching means for controlling electric current supplied from a power supply to said motor means; current detecting means for detecting the magnitude of the current supplied to said motor means; and upper and lower limit detecting means responsive to said current detecting means for releasing the holding action of said holding switching means when the motor supplied current becomes higher or lower than an upper or lower limit respectively.