Based on virtual instrument,associating the root-mean-square-value with(people's) feeling for the vibration of vehicle,taking the riding comfort of vehicle,C_V,as parameter,this paper computes the comfortable degree of vibration and simulates the interface of indicator.
if the wavelength scope is from 20 to 30 m, the main frequency will decrease to the level of 1.50 Hz, which is accordable to the sensitive frequency of body, the riding comfort will reduce greatly, and the riding index will increase by more than 20%;
if the wavelength scope is from 20 to 30 m, the main frequency will decrease to the level of 1.50 Hz, which is accordable to the sensitive frequency of body, the riding comfort will reduce greatly, and the riding index will increase by more than 20%;
The improvement of JS 125-4W motorcycle contributes to a 50% drop of the vibratory energy,by which the vibration has been better controlled with the riding comfort greatly improved.
The current ATC system control mode has such shortcomings as: the length of the automatic block section is determined by trains with the worst performance; the sudden change of the accelerating and retarding speed when multilevel brake; reduce the riding comfort, etc.
This paper begins with the dynamics characteristics of a 3-car magnetic levitation train passing another train, the dynamics characteristics of a 5-car magnetic levitation train passing another train are discussed, and the control technique applied recently to improve the riding comfort is described.
On the basis of the study result, the important parameters, the spring rigidity and the damping coefficient of J80 skidder chair, were optimized and some suggestions were put forward for improving the riding comfort of the skidder seat.
In order to investigate the effectiveness not only in riding comfort but also in road handling, an half-car model with the hydro-pneumatic active suspension system is proposed in this study.