Table 1: Simulation parameters in hydraulic system.

parametervalue

The diameter of cylinder piston (m)0.024
The diameter of cylinder rod (m)0.012
The length of the stroke (m)0.1
The servo valve natural frequency (Hz)100
The switch valve natural frequency (Hz)50
The maximal flow rate of low-pressure pump (L/min)60
The maximal flow rate of high-pressure pump (L/min)10
The maximal pressure of the low-pressure pump (MPa)7.5
The maximal pressure of the high-pressure pump (MPa)21
The gas precharge pressure (MPa)18
The polytropic index1.2
The accumulator volume (L)0.2