Simulation test bed for automatic gearbox controller and simulation model establishing method

Abstract

The invention discloses a simulation test bed for an automatic gearbox controller. The test bed comprises a host computer, a real-time object machine, a signal generating and measuring part, an engine electric controller and a plurality of electromagnetic valves, wherein the host computer, the real-time object machine, the engine electric controller and the electromagnetic valves are connected with the signal generating and measuring part respectively; the host computer downloads a simulation model of an automatic transmission vehicle dynamic assembly to the real-time object machine; an engine model, an automatic gearbox model and a whole vehicle dynamic model are integrated in the simulation model of the automatic transmission vehicle dynamic assembly; the simulation model of the automatic transmission vehicle dynamic assembly contains hardware-in-the-loop of the gearbox controller and hardware-in-the-loop of the engine electric controller to form a virtual vehicle gearbox controller develop simulation platform close to a real vehicle, can greatly improve the developing test efficiency of the gearbox controller under a condition of ensuring the software quality of the gearbox controller. The invention also discloses a method for establishing the simulation model of the automatic transmission vehicle dynamic assembly.

Description

technical field [0001] The invention relates to automobile development and testing technology, in particular to an automatic transmission controller simulation test bench and a simulation model establishment method. Background technique [0002] Automobile automatic transmission (AT) involves multidisciplinary fields such as machinery, hydraulic pressure, electronics and control. Its working conditions are very complicated and have high safety requirements. ) Complexity of design: The gearbox controller requires a long-term process from system architecture design, development and testing of individual functions to software integration, system testing and calibration. In the gearbox controller software development process, the method of conceptual design---modeling and simulation---code generation---software integration---test is usually adopted. For gearbox controllers that fail the test or need to be improved The functional modules of the software need to repeat the above ...

AI Technical Summary

Problems solved by technology

For the more complex gearbox controller software function modules, due to the inability to simulate in the actual environment, the defects in the conceptual design and modeling cannot be found in time, resulting in defects in the generated gearbox controller software, causing gearbox controller Frequent software upgrades reduce the quality and efficiency of gearbox controller software development

Such defects are generally discovered by road tests, which is time-consuming and laborious, increasing development costs and lengthening the development cycle

In the existing technology, the simulation of gearbox control system mostly adopts offline simulation mode, and very few hardware-in-the-loop simulations are simple gearbox controller hardware real-time simulations. The models are relatively simple, and cannot accurately simulate the working state of the gearbox, and cannot form a complete model with the engine model. The power system and transmission controller cannot communicate with the engine electronic control unit (ECU, Engine Control Unit) in real time, and the simulation test environment is not perfect, which cannot meet the development requirements of the product transmission controller

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