Test device capable of simulating vibration of magnetic suspension vehicle under aerodynamic force conditions

Abstract

The invention discloses a test device capable of simulating the vibration of a magnetic suspension vehicle under aerodynamic force conditions. The test device comprises a mounting base and a supporting upright post, a rail is connected to an upper end of the supporting upright post through a rubber spring, linear rails are arranged on front and back side faces of both ends of the rail, an electromagnet capable of vertically moving up and down is further arranged on the linear rails through sliding block bodies, a suspension sensor is installed on one end of the electromagnet, load supports arefixedly connected to the four corners of the electromagnet through lifting rods, load weights are connected to the upper surfaces of the load supports through a plurality of load supporting springs,an oil pressure actuator is arranged on the mounting base, a pressure sensor is arranged at a connection site of an actuation end of the oil pressure actuator and the load weights, and the oil pressure actuator adjusts the stimulation load according to the signal of the pressure sensor to simulate the action of the aerodynamic force on the magnetic suspension vehicle. By adoption of the scheme, the interference of other disturbance factors is eliminated, the problem that the aerodynamic load and other loads cannot be distinguished in the current line test is overcome, the structural complexityis simplified, and the test cost is reduced.

Description

technical field [0001] The invention relates to the field of vibration tests of maglev vehicles, in particular to a test device capable of simulating the vibration of maglev vehicles under aerodynamic conditions. Background technique [0002] Maglev trains have received enough attention at home and abroad in recent years, and their non-contact characteristics make them have many advantages over wheel-rail trains, but there are still some problems that have not been studied. With the increase of vehicle speed, the levitation stability and vibration response of the maglev train under the action of aerodynamic load are issues that need to be studied urgently in the current maglev system. EMS high-speed maglev vehicles rely on controlled vertical electromagnetic force to achieve stable suspension. Compared with lateral force, vertical aerodynamic force (ie, aerodynamic lift) will have the most direct impact on dynamic stability. The constant component of aerodynamic lift will c...

AI Technical Summary

Problems solved by technology

However, the structure of the current maglev experimental device is fixed, and the structural parameters cannot be easily changed. It is difficult to simulate the aerodynamic effect by modifying the structural design to install the loading equipment and apply the load.

Therefore, the above-mentioned instability mechanism of the maglev vehicle under the action of aerodynamic lift cannot be experimentally studied and verified.

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