Motor controller parameter modification system and method based on controller area network (CAN) bus

Abstract

The invention discloses a motor controller parameter modification system based on a controller area network (CAN) bus. The motor controller parameter modification system comprises a motor controller and an upper computer. The motor controller comprises an electrically erasable programmable read-only memory (EEPROM), a processor and a random access memory (RAM). The processor is connected with a CAN card through the CAN bus. The CAN card is connected with the upper computer. The invention additionally discloses a motor controller parameter modification method based on the CAN bus. The motor controller parameter modification method comprises the steps of system parameter initialization and parameter online modification. When a user needs to replace a motor or adjust protection parameters, the online modification of relevant controller parameters can be automatically finished through software installed in the upper computer according to motor parameters, the system can be put into operation again, and not only is the system convenient to operate, but also the modification accuracy is high and the reliability is high; and by using the existing CAN bus of the whole vehicle to finish data communication between the processor and the upper computer, the online modification of the relevant parameters of the motor controller can be finished conveniently and rapidly.

Description

technical field [0001] The invention relates to a CAN bus-based motor controller parameter modification system and method. Background technique [0002] With the continuous improvement of people's living standards, the automobile industry has developed rapidly and rapidly. Motors, as the core of motor vehicles, are becoming more and more important to the optimization of motor controllers. [0003] At present, the motor controllers used in electric vehicles are mainly divided into two categories: one is used with a specified motor, and the other is a controller with a motor parameter self-tuning function. For the first category, when the system needs to replace the motor, the corresponding controller must be replaced, resulting in inevitable economic losses; for the second category, the current controller parameter self-tuning accuracy is low, which cannot meet the requirements of the control system. Therefore, there is a compromise solution in the middle, which is to modify...

AI Technical Summary

Problems solved by technology

At this stage, the communication between the various systems on the vehicle almost all use CAN bus communication with relatively high transmission efficiency. The traditional motor controller parameter modification system uses serial ports for communication, which is not unified and compatible with the vehicle communication system. Poor sex and stability

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