Patent ID: 7196895
Filing Date: 2007-03-27
Classification: B62D,G01R,H01H

Abstract:
1. An electronic control system comprising: a power source; an actuator; a controller for controlling the actuator; a power source relay for supplying and cutting off a supply of power to at least one of the actuator and the controller when set to an ON-state and an OFF-state, respectively; a fusion detecting means including a first resistor and a capacitor connected between the power source relay and a ground to detect fusion of the power source relay based on a voltage of the capacitor; a second resistor connected in parallel to the first resistor between the power source relay and the ground; a switching element connected to one of the first resistor and the second resistor in series; a charge removing means for setting the switching element to an ON-state when the power source relay is set to the OFF-state, thereby discharging a charge accumulated in the capacitor through the first resistor and the second resistor, so that the fusion detecting means detects the fusion of the power source relay based on the voltage of the capacitor; an input shaft connected to a steering wheel; an output shaft connected to the steered wheel; a transfer-ratio varying mechanism unit for varying a rotational angle of the output shaft with respect to a rotational angle of the input shaft; and a joint mechanism for making the input shaft and the output shaft rotatable integrally with each other, wherein the second resistor and the switching element are provided as a part of a circuit that normally controls a solenoid for joining the input shaft and the output shaft or releasing the joint thereof in the joint mechanism.