The Development Of The Virtual Test System Of Transmission Shift Mechanism

As the pillar industry in many countries, the automotive industry not only represents the level of a country's industrialization, but also affects the country's national economy. Thus increasing the competitiveness of automotive products is particularly important. In order to control the quality of automotive products and improve its quality, it is bound to put higher and more stringent requirements to its assembly parts. Transmission shift mechanism, as an important assembly parts and components, its quality will directly affect the performance of the transmission system in a moving car and the handling performance, and the quality of cars. Therefore, to evaluate the transmission shift performance and reliability, it is important to develop a test system with high precision and good reliability.With the growing development of virtual instrument technology, it is popular using low-cost automation technology to research and develop various types of multi-functional intelligent systems in the industrial testing fields. Especially in the machinery, metallurgical and other industries, it has been integrated into a large number of various types of virtual instruments. Its excellent performance, good on-line data processing capabilities and real-time data communication capabilities, as well as friendly interactive platform, get more people's attention.Based on the analysis and research of the shift test platform at home and abroad, this paper develops the virtual testing system of transmission shift mechanism. In the course of test, using the cylinder to control the shift manipulator movement to analog transmission's real working condition. Sensors and detection implementing agencies can achieve the detection of shift displacement, shift force, torque and other parameters such as speed.The main features of the test system is that it can realize the shift handle moving automatically under the control of computer and software, which realize the whole intelligent test process. System monitoring software is developed by modular architecture language Visual Basic, which realizes the fully interactive interface. The functions include: two ways to achieve performance and reliability tests ,manual and automatic ; to output the real-time data acquisition and data in the form of curves; to realize the data archive and print functions; Re-calibration can be achieved quickly; with automatic alarm system function to ensure safe and reliable operation. In this paper, the test system developed has the following advantages: user-friendly and easy to control; better expansibility of the system functions; high accuracy and good stability. Through practical tests, it proves that the system can fully satisfy the test requirements.