IMPROVEMENT OF BUS OPERATIONAL CHARACTERISTICS WHILE USING INTEGRATED CONTROL OF SUSPENSION AND TRANSMISSION
https://doi.org/10.21122/2227-1031-2016-15-1-37-45
Abstract
Semi-natural tests for active pneumatic suspension of a 18-tonne tourist bus with the system of automatic body stabilization of the mobile machine and feed-back coupling according to kinematics parameter. The test have been executed in the cases when the bus is stocked with an automatic hydro-mechanical transmission in the process of speed picking up, gear-changing or road braking which is assigned by accidental road humps. A computer simulation of dynamic structures in combination with virtual devices and real objects (HIL – Hardware-in-the-Loop Simulation) has been carried in the paper. Personal computers, software, programmed logic controller, frequency generator, solenoid-operated valve have been used for the investigation process. The paper proposes an unconventional method for improvement operational characteristics which is based on integrated control of a suspension and automatic hydro-mechanical transmission. A mathematical model includes systems of automatic transmission, suspension and module for generation of accidental road humps. The model has been considered as a basis for semi-natural laboratory bench with industrially-manufactured controller, other components of automatic systems and standard control organs. The most efficient method for body stabilization is control of the suspension according to the parameter of angular rate during vertical turn of an automobile’s center line with a turning point in the center of mass. The developed algorithm and stabilization system according to angular rate of body’s center line turning have made it possible to improve dynamics of the bus while making gear-changing and to reduce fuel consumption during starting-up and speed picking-up processes. During the braking process such system simultaneously decreases oscillation amplitude of some parameters more than two-fold.
About the Authors
V. V. Mikhailau
Joint Institute of Mechanical Engineering of the NAS of Belarus
Belarus
Belarus
Associate Professor, PhD in Engineering
Address for correspondence: Mikhailau Valeriy V. State Scientific Institution “Joint Institute of Mechanical Engineering of National Academy of Sciences of Belarus” 12 Akademicheskaya str., 220072, Minsk, Republic of Belarus Tel.: +375 17 284-25-93 valery.mikhailov@gmail.com
A. G. Snitkov
Joint Institute of Mechanical Engineering of the NAS of Belarus
Belarus
Belarus
Engineer
S. V. Liahov
Joint Institute of Mechanical Engineering of the NAS of Belarus
Belarus
Doctor of Engineering
Belarus
Doctor of Engineering
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For citations:
Mikhailau V.V., Snitkov A.G., Liahov S.V. IMPROVEMENT OF BUS OPERATIONAL CHARACTERISTICS WHILE USING INTEGRATED CONTROL OF SUSPENSION AND TRANSMISSION. Science & Technique. 2016;15(1):37-45. (In Russ.) https://doi.org/10.21122/2227-1031-2016-15-1-37-45
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