Patent ID: 8977453
Filing Date: 2015-03-10
Classification: B60Y,F16H

Abstract:
1. An apparatus for controlling an automatic transmission that changes speed of an output of a prime mover mounted on a vehicle and transmits the output to a driven wheel, having an electromagnetic control valve that is installed in a hydraulic pressure supply device of the automatic transmission and is operated upon receipt of current from a power source to control hydraulic pressure supply to the automatic transmission, and a current supply controller that is composed of a microcomputer installed on an electronic circuit board and is configured to calculate a current supply command value of the current supplied to the electromagnetic control valve based on a hydraulic pressure supply control value of the automatic transmission which is calculated based on an operating condition of the vehicle and control current supply from the power source to the electromagnetic control valve based on the calculated current supply command value, comprising: a load detector configured to detect load of an electric device that shares ground set on the electronic circuit hoard with the electromagnetic control valve, wherein the current supply controller calculates the current supply command value based on the hydraulic pressure supply control value and the detected load.