Nonlinear dynamic analysis of complex hydraulic driving processes

Hydraulic driving processes are widely used in industry. The complexity and strong nonlinearity of these processes often make their dynamic behavior difficult to estimate. In this paper, a nonlinear dynamic analysis method is proposed to overcome this difficulty. First, a nonlinear model of complex hydraulic driving processes is derived. A solution method is then developed in order to obtain an analytical solution. Using this analytical solution, the conditions for stable or unstable motion are derived and the nonlinear dynamic behavior is estimated. The analytical results are then verified using both simulations and experiments conducted on actual hydraulic processes.