Vibration and loading multi-degree-of-freedom bogie integrated coupling simulation system and method

Abstract

The invention belongs to the simulation system and method of bogie of a high-speed train and discloses a coupling simulation system and method used for vibrating and loading a bogie assembly with multi-degree of freedom. A tension and pressure sensor and a displacement sensor are all mounted on servo hydraulic cylinders. An acceleration sensor is mounted on a six-degree-of-freedom excitation teststand. The tension and pressure sensor, the displacement sensor and the acceleration sensor are used for detecting stroke of a rod of the servo hydraulic cylinder, tension or pressure applied on the servo hydraulic cylinder and accelerated speed of the six-degree-of-freedom excitation teststand and feed back to a servo controller through PCI (peripheral component interconnect) 1716 of an AD board. An X-direction excitation hydraulic cylinder, a Y-direction excitation hydraulic cylinder and a Z-direction excitation hydraulic cylinder apply forces to the six-degree-of-freedom excitation teststand to simulate the six-degree-of-freedom movement. An X-direction force loading hydraulic cylinder, a Y-direction force loading hydraulic cylinder and a Z-direction force loading hydraulic cylinder apply forces to a train simulation device to simulate four-degree-of-freedom static and dynamic force loading, which is integrated with the six-degree-of-freedom vibration simulation to form the coupling simulation. The coupling simulation system has the advantages that redundant force and dynamic load interference factors are reduced, true coupling mechanics simulation environment is provided for the bogie of the high-speed train, and true and accurate detection is acquired in the state of the coupling environment.

Description

technical field [0001] The invention relates to a high-speed train bogie simulation system and method, in particular to a vibration and loading multi-degree-of-freedom bogie integrated coupling simulation system and method. Background technique [0002] Since the sixth major speed increase of the railway, "speed increase" and "increased transport" have brought certain economic and social benefits to the railway sector, but also brought us a series of new technical problems. Among them, due to the increase of the running speed of the train, the dynamic load acting between the vehicle and the track structure increases accordingly, which gradually intensifies the vibration between the components in the vehicle system. These loads act on the bogie, which will seriously affect the steering. Therefore, it is of great significance to accurately measure and optimize the parameters of the bogie. However, the existing bogie test rig has certain limitations, especially with the signif...

AI Technical Summary

Problems solved by technology

However, the existing bogie test rig has certain limitations, especially with the significant enhancement of system coupling, line disturbance and aerodynamic action, the existing test rig cannot simulate the overall performance of the bogie in a coupled environment

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