Electro-hydraulic control system of high/ low temperature test stand of automobile automation transmission valve body

Abstract

The invention discloses an electro-hydraulic control system of a high / low temperature test stand of an automobile automation transmission valve body. The system comprises: an electric control system and a high / low-temperature hydraulic system. The electric control system comprises: an upper computer, a lower computer, an input / output module and a transmission control unit (TCU) controller. The input / output module and the TCU controller are connected with the lower computer as a dual redundant control mode. The valve body to be detected is directly controlled by a dual redundant control system. The high / low-temperature hydraulic system comprises an independently controlled high-temperature hydraulic circuit and a low-temperature hydraulic circuit, a high / low-temperature shared circuit which is connected with the high-temperature hydraulic circuit and the low-temperature hydraulic circuit and a detected hydraulic system which is connected with the high / low-temperature shared circuit. The detected valve body is arranged in the detected hydraulic system. In the invention, hierarchical control formed by the upper computer, a lower real-time controller and real-time interface control are adopted; through a CAN communication and signal interface module and a dual redundant valve plate control scheme which is connected with the TCU, a requirement of high speed data acquisition and test in the valve body test under the condition of the high / low temperature and operation parameter simulation can be satisfied.

Description

technical field [0001] The invention relates to a control system of a component test bench, in particular to an electro-hydraulic control system of a valve body high and low temperature test bench for an automatic transmission of an automobile. Background technique [0002] As the core key component of the automatic transmission, the valve body plays a vital role in the realization of vehicle functions and the improvement of performance. It not only affects the driving performance and driving comfort of the vehicle, but also affects the efficiency and reliability of the vehicle. Both performance and service life have a major impact. Therefore, it is very important to systematically test the function and performance of the valve body. The test results are not only the basis for improving the design of the valve body and solenoid valve, but also an important basis for the development of automatic transmission control software. [0003] The performance of the valve body is gre...

AI Technical Summary

Problems solved by technology

[0009] To sum up, the existing valve body test benches all lack the functions and corresponding control devices for valve body performance testing under high and low temperature conditions, lack of real-time high-speed data acquisition and control of the test and test system, and lack of functions for setting the TCU controller. The performance test of the valve body under the simulated operating environment with fixed parameters, in order to conduct real-time high-speed data acquisition and performance test in the full working temperature range of the automatic transmission valve body, it is necessary to design the corresponding electro-hydraulic control system of the high and low temperature performance test bench of the valve body to meet the requirements of the automatic transmission valve body. High-speed data acquisition and control test requirements for pressure and flow under high and low temperature test conditions of transmission valve body and simulated operating parameters

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