| 摘要 |
PROBLEM TO BE SOLVED: To provide a transmission control apparatus using a supplied current control apparatus by an inexpensive configuration and allowing the exchange of a linear solenoid as a single part.SOLUTION: In a linear solenoid 107n, an electromagnetic coil 71n, a pressure sensor 72n, and label resistors 73n and 74n for correcting an individual variation in a pressure detection characteristic are integrated, the standard characteristic of the pressure sensor 72n is stored in advance in a control module 120M, and when driving is started, resistance values of the label resistors 73n and 74n are read, the pressure detection characteristic of the applied pressure sensor 72n is corrected, and an excitation current of the electromagnetic coil 71n is controlled in such a way that target adjusted hydraulic pressure is obtained. Even if the valve opening characteristic of the linear solenoid 107n changes due to a change in oil temperature, control is performed so that the hydraulic pressure after adjustment is constant. |
