Control method of motor controller used for small battery electric vehicle

Abstract

The invention provides a control method of a motor controller used for a small battery electric vehicle. The method includes an initialization process and a major cycle process. The initialization process comprises parameter initialization and device initialization, and a stored armature excitation curve is read during parameter initialization; and device initialization comprises single-chip microcomputer initialization, A / D chip initialization and serial port initialization. After the initialization process is finished, the major cycle process is conducted, whether execution marks of all tasks corresponding to a switching value processing module, a fault detection module, a serial port processing module, an excitation PWM processing module, an armature PWM processing module and a watchdogprocessing module are effective or not is judged, when the corresponding marks are effective, task functions of the corresponding modules are called, after operation of tasks is finished, the major cycle is conducted continuously, and programs of all functional modules can be continuously and cyclically executed when the controller operates normally. The method has the beneficial effects that control is simple, the switching value response speed is high, reliability is high, fault processing can be conducted in time, and traveling safety is improved.

Description

technical field [0001] The invention relates to a control method of a motor controller for a small pure electric vehicle. Background technique [0002] The "Electric Vehicle Twelfth Five-Year Science and Technology Development Plan" led by the Ministry of Science and Technology clearly stated that "the development of electric vehicle technology is an inevitable choice for automotive technology progress and industrial upgrading. In terms of pure electric vehicles, it is necessary to step up the implementation of "pure electric drive." "Technology transformation strategy, comprehensive exploration of pure electric vehicle technology solutions, by 2015, realize the large-scale commercial demonstration of the first generation of electric drive vehicles represented by micro (small) electric vehicles, and enable my country to use small electric vehicles as the center The pure electric vehicles and other aspects represented are at the international leading level." It can be seen tha...

AI Technical Summary

Problems solved by technology

However, due to the complex operating conditions of electric vehicles, the performance of traditional motor design methods and theoretically designed motors, as well as the control method of motor controllers, cannot meet the requirements.

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