Switch type semi-active suspension system

Abstract

The invention relates to a switch type semi-active suspension system, which comprises four sets of switch type semi-active vibration absorbers, two acceleration sensors and a detection control system, wherein each two sets of the switch type semi-active vibration absorbers are arranged diagonally and act between a car body and a bogie; each set of switch type semi-active vibration absorbers respectively comprise a vibration absorber body A, high-speed switch valves A1 and A2, an adjustable damper valve A4 and a pressure sensor, wherein the high-speed switch valve A1 is used for communicating a rodless cavity with an oil storage cavity of the vibration absorber body; a check valve A3 is arranged between the oil storage cavity and the rodless cavity; the high-speed switch valve A2 is used for communicating the rodless cavity with a rod cavity; the adjustable damper valve A4 is arranged between the rod cavity and the oil storage cavity; and the pressure sensor is used for detecting the pressure of an oil way led out of the rod cavity of the vibration absorber body; and output signals of the acceleration sensor and the pressure sensor are transmitted to a controller after being processed, and the high-speed switch valves A1 and A2 are controlled by the controller to act.

Description

technical field [0001] The invention relates to a suspension system for reducing vehicle vibration, in particular to a secondary lateral vibration reduction system applied to passenger cars, locomotives or EMUs at speeds of 200km / h and above. Background technique [0002] Vehicle vibration is an important factor affecting vehicle ride comfort. One of the ways to attenuate vibration and improve ride comfort is to design a reasonable suspension system. The damping and stiffness of traditional passive suspension systems are generally determined by empirical design or optimization methods. However, it cannot be adjusted while the vehicle is running, which limits the further improvement of the suspension performance. In recent years, with the continuous increase of the speed of railway vehicles and the continuous improvement of people's comfort on trains, the traditional suspension system has been unable to meet the relevant requirements. It must be done. Contents of the inven...

AI Technical Summary

Problems solved by technology

[0002]Vehicle vibration is an important factor affecting the ride comfort of the vehicle. One of the ways to attenuate vibration and improve ride comfort is to design a reasonable suspension system. The damping of the traditional passive suspension system The stiffness and stiffness are generally determined by empirical design or optimization methods. Once selected, they cannot be adjusted while the vehicle is running, which limits the further improvement of suspension performance.

In recent years, with the continuous increase of the speed of railway vehicles and the continuous improvement of people's comfort on trains, the traditional suspension system has been unable to meet the relevant requirements. must do

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