ELECTRIC POWER STEERING CONTROL METHOD, ELECTRIC POWER STEERING CONTROL DEVICE, ELECTRIC POWER STEERING DEVICE AND VEHICLE

摘要

PROBLEM TO BE SOLVED: To provide an electric power steering control device which reduces a burden on hardware, the electric power steering control device being configured to perform vector control of an AC motor.;SOLUTION: The electric power steering control device comprises: a motor part 31 which includes an inverter, detects an U-phase current and a V-phase current of an AC motor and calculates a rotation angle θ and a rotation angular velocity ω based on data of a sensor that detects an angle of the AC motor; three-phase/two-phase transformation 32 which performs coordinate transformation based on the rotation angle θ; d-axis PI control 34a which calculates a d-axis voltage command value based on a d-axis current deviation; q-axis PI control 34b which calculates a q-axis voltage command value based on a q-axis current deviation; non-interference control 35 which generates a d-axis compensation term and a q-axis compensation term; and spatial vector modulation 37 which discriminates a sector number (n) of a spatial vector, calculates a rotation angle γ, generates a switching pattern consisting of a control signal for controlling six switch elements of the inverter, and supplies the switching pattern.;SELECTED DRAWING: Figure 3;COPYRIGHT: (C)2017,JPO&INPIT