Aiming at the safety and health requirements of equipment in chemical machinery field and combining with the current intelligent industrial manufacturing background, a PHM based equipment health management system is developed. Taking 316L stainless steel diffused welding joint of micro and small heat exchanger as the research object, the PHM system framework is designed. The system is divided into six parts: object layer, perceptual transport layer, data layer, analysis layer, recommendation layer and implementation layer. In addition, it mainly analyses test experiment construction, evaluation means, maintenance management, etc., and solves the problem of “Information Island” caused by the separation of processes in the current system.
As the speed of high-speed emu increases, the service conditions become more and more severe and complex. Brake system is an important guarantee of safety, so it is urgent to study the design concept and test method of brake system. There are relatively few researches on high-speed train brake test bench in China, and the existing test bench still has shortcomings in compatibility, real-time simulation and other aspects. Aiming at these problems, this work builds a brake test-bed for emu, which can complete the research test, performance test and reliability test of high-speed emu brake system and key components. At the same time, cooperate with Amesim, the braking process is simulated and predicted, and the braking process is analyzed by breakpoint, which provides a basis for the analysis, design and improvement of the braking system after experiment.
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