Energy optimization control system of alternating-current permanent magnet motor for electric automobile EPS

Abstract

The invention discloses an energy optimization control system of an alternating-current permanent magnet motor for an electric automobile EPS, and belongs to the field of electric automobile control and electric transmission control equipment. The system is composed of an energy optimization controller and a torque detection module, wherein the energy optimization controller is composed of an optimizing controller, an optimization controller, a robust controller, an energy consumption controller and a torque PI module, the optimizing controller, the optimization controller and the robust controller are in parallel connection and then connected to the input end of an EPS motor system, the optimizing controller is composed of a constraint module, a KNN algorithm weight module and an integralPI control module, the optimization controller enables the motor rotation speed and current to reach reference values within limited time for achieving rapid transient response, optimization of parameters is realized through the optimizing controller, so that the disturbance resistance is further enhanced, the control precision is ensured, and the energy optimization controller can realize accurate torque tracking under the condition of a given inverter amplitude limiting with the minimum power consumption.

Description

technical field [0001] The invention belongs to the technical field of electric vehicle control and electric drive control equipment, in particular to an AC permanent magnet motor control system used for electric power steering (Electric Power Steering, EPS for short) of electric vehicles. Background technique [0002] The popularity of automobiles has brought severe energy and environmental problems, and energy conservation and environmental protection have become one of the themes in the development of automobile technology. Under such circumstances, electric vehicles have emerged as the times require, which can achieve zero emissions, reduce greenhouse gas emissions, and run smoothly with low noise. The output power of electric vehicles is not as good as that of fuel vehicles. Compared with mechanical hydraulic power steering, electric power steering (EPS) is light and flexible, reduces the weight of the vehicle, effectively attenuates the vibration caused by the road sur...

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Problems solved by technology

[0004] EPS system motors require precise position signals and fast and accurate torque responses, so the conventional control systems currently used in the industry cannot meet the time-varying parameters, sudden load changes, and disturbances caused by various uncertain factors in electric power steering systems.

For example, the Chinese patent application number is 201610553933.2, and the name is "Construction method of AC motor anti-jamming intelligent controller for smart car EPS". energy

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