DRIVING APPARATUS FOR ELECTROMOTIVE SEAT

摘要

PURPOSE: A driving apparatus of an electric-powered seat is provided to protect an electric-powered seat by preventing the escape of an electric-powered seat from a moving route without using a limit switch. CONSTITUTION: A driving apparatus of an electric-powered seat is composed of an over-current cutoff unit(10), a motor control unit, and a direct-current motor drive unit(30). The over-current cutoff unit senses the electric current flowing in a direct-current motor(19) and compares the sensed electric current to the electric current for the reference voltage. If the sensed electric current is larger than the electric current for the reference voltage, the over-current cutoff unit outputs a logic signal for stopping the drive of the direct-current motor. If the sensed electric current is smaller than the electric current for the reference voltage, the over-current cutoff unit outputs a logic signal for driving the drive of the direct-current motor according to the demand of a user. The motor control unit outputs the control signal according to the input of the logic signal outputted from the over-current cutoff unit. The direct-current motor drive unit drives the direct-current motor according to the control signal from the motor control unit.