MODELING AND CALCULATION OF FLOW AMPLIFIER PARAMETERS IN STEERING OF HEAVY TRUCKS

• Main Authors: V. P. Avtushko, M. I. Zhilevich, E. M. Zabolotsky
• Format: Article
• Language: Russian
• Published: Belarusian National Technical University 2008-03-01
• Series: Nauka i Tehnika
• Online Access: https://sat.bntu.by/jour/article/view/728

The paper analyzes prospects pertaining to development of methods for dynamic calculation of monitoring hydraulic units with various types of relations.  Calculated diagram of steering hydraulic drive with flow amplifier and turning cylinder has been given in the paper and its dynamic model has been developed. A hydraulic drive is considered as a system with lumped parameters. It is supposed that properties of working fluid are unchangeable during transient process; leakages and cavitations do not occur; fluid can be pressed; resistance of service drain line is taken into account. Model has been developed with due account of resistance of manifolds and internal channels of flow amplifier, hydrodynamic forces, that influence on amplifier control valves, and friction forces of movable elements. Multi-variant dynamic calculation has been done and some results of the investigations are presented in the paper. The paper also contains analysis that shows influence of various design and component parameters of flow amplifier on the drive dynamics.