Simulator-based electric control hydraulic type automatic transmission control rule rapid prototyping test bench

Abstract

The invention discloses a simulator-based electric control hydraulic type automatic transmission control rule rapid prototyping test bench. The test bench is characterized by comprising a PC (personal computer), a simulator and an automatic transmission test bench; a data model of an entire analogue automobile is compiled by the PC and then stored in the simulator; the PC monitors in real time and records the operation process result of the entire test bench; the PC and the simulator perform real-time bidirectional data communication through a CAN (controller area network) data bus; the simulator is used for simulating the data model of the analogue automobile in real time; the simulator sends a shift analogue signal to the automatic transmission test bench through an I / O (input / output) interface, and acquires an analogue signal from the automatic transmission test bench through the I / O interface at the same time; and the automatic transmission test bench receives an electromagnetic valve control signal sent by the simulator and conducts corresponding shift action. Through the invention, the development cost of the hardware circuit is greatly saved, and the product development period is shortened.

Description

technical field [0001] The invention is an experimental bench for rapid prototyping of automatic transmission control rules, more specifically, an experimental bench for rapid prototyping used in the development process of an automatic transmission TCU. Background technique [0002] The automatic transmission has small shifting impact and stable transmission, and has been the mainstream model in automotive transmission products for a long time. In the research and development process of the mechanical automatic control law, the verification of the control law of the automatic transmission and the bench test of the automatic transmission are the basis for realizing the loading of the prototype. There are three problems in the traditional development process: [0003] 1. First complete the production of hardware, and verify the control characteristics and control effects of the control law on this basis. Once it is found that the designed scheme cannot meet the requirements, ...

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Problems solved by technology

[0003] 1. First complete the production of hardware, and verify the control characteristics and control effects of the control law on this basis. Once it is found that the designed scheme cannot meet the requirements, the hardware must be modified, resulting in a large investment in hardware;

[0004] 2. The software engineer manually writes the code, and then integrates the code into the hardware circuit, which needs to be based on the hardware. The software engineer and the hardware engineer cannot design at the same time, which will prolong the product development cycle and waste a lot of time and material resources;

[0005] 3. When verifying the model, the operating status of the model cannot be monitored, and the control parameters of the model cannot be modified or calibrated. It can only be modified through subjective judgment, which takes a lot of time in the verification, testing and modification of the model , but also cause a waste of manpower and material resources

[0009] However, at present, the simulator has not been applied to the automatic transmission bench to control the control law of the automatic transmission, and monitor the operation status of the control law in real time and modify the control parameters to adjust the shift quality.

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