A method and device for adjusting parameters of an EPS controller

Abstract

The invention discloses a parameter adjusting method for an EPS controller. The method comprises steps: in an integration control environment provided by an MCU in the EPS controller, an EPS controller program is compiled to generate an ELF (Executable and Linkable Format) target file; the parameter adjusting device is then used to analyze the ELF target file, after analysis of the ELF target file is finished, the parameter adjusting device packages to-be-adjusted parameter information to a read / write command and the read / write command is sent to the MCU, the MCU analyzes the read / write command so as to finish parameter adjusting on the EPS controller. When the MCU program changes, the parameter adjusting device does not need to be changed, operation can be carried out only by guiding the new ELF target file, the resources are greatly integrated, manpower and material resources are saved, MCU parameter adjusting demands of different chips can be met, the variable value is supported to be displayed online, and the change curve of the variable value is dynamically displayed.

Description

technical field [0001] The invention relates to the technical field of controller parameter adjustment, in particular to a parameter adjustment method and device for an EPS controller. Background technique [0002] With the vigorous development of the automobile industry, the automotive power steering (EPS) has gradually replaced the traditional mechanical and hydraulic power steering due to its low energy consumption, small size, light weight, and space saving. [0003] Whether it is laboratory bench debugging or actual vehicle debugging, it is necessary to improve the development efficiency by adjusting the parameters of the EPS controller; in the development process of the EPS controller, it is usually first to use the integrated development environment (such as TI's CCS integrated development environment, FreeScale's CodeWarrie integrated development environment) for compilation and preliminary debugging. However, the main chip (MCU) used by different EPS controllers is ...

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Problems solved by technology

[0003] Whether it is laboratory bench debugging or actual vehicle debugging, it is necessary to improve the development efficiency by adjusting the parameters of the EPS controller; in the development process of the EPS controller, it is usually first to use the integrated development environment (such as TI's CCS integrated development environment, FreeScale's CodeWarrie integrated development environment) for compilation and preliminary debugging. However, the main chip (MCU) used by different EPS controllers is also very different. The integrated compilation and debugging environments used by MCUs are different, resulting in the target generated by the compilation environment The code formats are not the same. EPS manufacturers need to develop different host computer parameter adjustment devices for different MCUs to meet the needs. Support variable values ​​often seen when MCU is running, and cannot dynamically display variable change curves

[0004] The difficulty of EPS controller tuning is how to obtain the address, length, type and other attributes of the parameters to be debugged. At present, there are two common methods. One is to fix the parameters to be debugged in advance in the EPS controller program (running on the MCU). The address and other attributes, the host computer assistant software sends commands according to the fixed attributes of the parameters; the second is to obtain the address, length and type of the parameters by analyzing the map file compiled by the EPS controller program; the advantage of the first method is that it is simple and easy The disadvantage is that when the MCU program changes or new parameters need to be debugged, the debugging software must also be modified accordingly; the second method corrects the shortcomings of the first method, but there are still disadvantages: it cannot parse structures, enumerations, etc. complex data structures

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