Dynamics of the process boom machine working equipment under the real law of the hydraulic distributor electric spool control

[摘要] Analytical calculation methods of dynamic processes of the self-propelled boom hydraulic machines working equipment are more preferable in comparison with numerical methods. The analytical research method of dynamic processes of the boom hydraulic machines working equipment by means of differential equations of acceleration and braking of the working equipment is proposed. The real control law of a hydraulic distributor electric spool is considered containing the linear law of the electric spool activation and stepped law of the electric spool deactivation. Dependences of dynamic processes of the working equipment on reduced mass, stiffness of hydraulic power cylinder, viscous drag coefficient, piston acceleration, pressure in hydraulic cylinders, inertia force are obtained. Definite recommendations relative to the reduction of dynamic loads, appearing during the working equipment control are considered as the research result. The nature and rate of parameter variations of the speed and piston acceleration dynamic process depend on the law of the ports opening and closure of the hydraulic distributor electric spool. Dynamic loads in the working equipment are decreased during a smooth linear activation of the hydraulic distributor electric spool.

[发布机构] Siberian State Motor Road University, Mira ave., 5, Omsk; 644050, Russia^1

[效力级别] 物理学 [学科分类] 力学，机械学

[关键词] Analytical calculation;Analytical research;Dynamic process;Equipment control;Hydraulic cylinders;Hydraulic machines;Machine working;Research results