The writer in the paper made a further study of the nationality of the mechanic-hydrauclic servosy system of the mining meachine s hanlage of the basis of analysing its dynamic properties, pointed out the poblem existed in it, and put forward an impoved plan, Thus, OH gave the fundamental reason for improving the design of mechanic-hydraulic servosy system.

Fault tree analysis of electro-hydraulic servo mechanism

In order to link electro-hydraulic servo mechanism to CAN bus, an interface between electro-hydraulic servo mechanism and CAN bus has been designed.

Electro-hydraulic servo mechanism is an important part of helicopters, the integrity of it s function and state of it s performance has fatal influence on the safety and behavior of the aircraft, so it is necessary to test the product before application.

First we discuss the way of digital simulation on electrohydraulic servo mechanism, then build the mathematic model of electrohydraulic servo mechanism and finally analyse the result of digital simula-tion on an example with the statespace method.