A new hydraulic load simulationsystem, adopting a rotation directional valve and using a spring accumulator simulating the starter load, is proposed and working principles are described.
Compared with the prior art, the simulationsystem for the diaphragm spring of the clutch can simulate load resistance of different types of diaphragm springs of clutches.
The output direct feedback controller design and simulation results of a nonlinear mass-spring-damper mechanical system show that these methods are effective.