| 摘要 |
PURPOSE: A motor control current monitoring circuit in an electronic control power steering system is provided to monitor the control current applied to a DC motor by using a bus bar connected to an upper end of an H-bridge. CONSTITUTION: A motor control current monitoring circuit in an electronic control power steering system includes a first to a fourth FETs(1-1 to 1-4), a DC motor, and a differential amplifier. The first to the fourth FETs(1-1 to 1-4) are used for receiving a voltage of a battery and applying the current to a DC motor. The DC motor is operated by the current. The differential amplifier is used for obtaining a voltage difference between a first and a second voltages by inputting the first and the second voltages to a non-inversion terminal and an inversion terminal.
|
