Dynamic analysis of a low speed high torque hydrostatic drive using steady-state characteristics

In this article dynamic analysis of an open-circuit hydrostatic (HST) drive has been carried out to study its performance. A Low Speed High Torque (LSHT) radial piston motor has been considered for the drive. Bondgraph simulation technique is used to model the hydrostatic drive. The relationships of the loss coefficients of the drive with the other system variables, obtained from the steady-state model, are identified through experimental investigation. Using the parametric values, the overall dynamic model of the hydrostatic drive has been validated experimentally.

► This article analyzes the dynamic performance of hydrostatic drive system.
► The drive system consists of low speed high torque hydro-motor.
► Using the bondgraph simulation technique, the system has been modeled.
► From the steady-state performance of the system, the loss coefficients are identified.
► The dynamic model of the drive system has been validated through experimentation.