Calibrating method and calibrating system for electric control unit of automatic transmission

Abstract

The invention relates to the technical field of calibration and discloses a calibrating method and a calibrating system for an electric control unit of an automatic transmission. According to the calibrating method and the calibrating system disclosed by the invention, important parameters operated by the automatic transmission can be monitored in real time, important indexes of the automatic transmission including a shift schedule and a lock-up rule can be calibrated online and the development efficiency of an electric control system of the automatic transmission is increased.

Description

technical field [0001] The invention relates to the technical field of calibration, and is mainly applicable to a calibration method and a calibration system of an automatic transmission electronic control unit. Background technique [0002] With the development of the world's automobile industry, automatic transmissions are showing a trend of rapid popularization. In the development process of automatic transmission electronic control units, calibration is an indispensable link. It is important to choose a perfect and applicable electronic control unit calibration system. One of the key factors for the success of the control system development. Traditional calibration methods such as the calibration system based on SCI serial communication are still widely used. At the same time, new calibration communication methods and calibration protocols, such as the KWP2000 protocol based on the K line and the CCP protocol based on the CAN bus, are also being continuously obtained. W...

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Problems solved by technology

[0003] The "universal calibration device for automotive electronic control units" disclosed in the invention patent specification of Chinese Patent No. CN200810070031.9 uses a single-chip microcomputer as a calibration device. Although the calibration function of the automotive electronic control unit can be completed, it needs a separate upper computer calibration system. Integration increases cost and workload, and the scope of application is limited

The invention patent specification of Chinese patent No. CN200510061162.7 discloses "Embedded universal calibration device and method based on CCP protocol" and the invention patent specification of Chinese patent No. CN200410003472.9 discloses "Hybrid electric vehicle controller calibration based on CCP protocol "Methods" all use the method of communication between the upper and lower computers with standard calibration protocols to carry out the calibration work, but it is mainly for the calibration of the electronic control unit of the automobile engine, and a large number of modifications are required to be applied to the electronic control system of the automatic transmission.

CANape, INCA, CalTool, etc. are relatively advanced calibration systems at present, but most of them are expensive, and the early configuration is cumbersome, the combination of the calibration protocol driver and ECU is very complicated, the scope of application is limited, and its application has relatively large limitations

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