The invention relates to a control device and a controller for an electric power steering system based on an alternating current asynchronous motor. The control device establishes a steering wheel torque rotation angle signal acquisition circuit, a motor rotor position signal acquisition circuit, an alternating current asynchronous motor driving circuit and a CAN communication circuit with a main control chip as the core. The controller comprises an electric power steering control module, an alternating current asynchronous motor control module, a motor rotor position signal resolving module and a steering wheel torque rotation angle signal resolving module, wherein the electric power steering control module comprises a multipoint fold line type basic power control sub-module, a motor compensation control sub-module, an active return control sub-module and a motor q-axis direction target current calculation sub-module. The control device and the controller achieves good control over the electric power steering system based on the alternating current asynchronous motor through a reasonable architecture of a control hardware platform and control software, and enables the electric power steering system to be more reliable and complete.
Control device and controller for electric power steering system based on alternating current asynchronous motor
2015-05-06
Patent
Electronic Resource
English
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |