engleski

Modelling and control of swash-plate dynamics

There are many new examples of applications of hydrostatic transmissions in the mobile scope. Beside the efficiency, the control ability and the fast response of the hydrostatic transmission are very important in modern applications. In this regard, a DC servomotor can be applied as an actuator of the variable displacement mechanism of smaller hydrostatic units. In this way, fast responses and favorable control ability can be accomplished. This paper considers a DC servo-motor as the actuator for the variable displacement mechanism of the pump. Background of modeling of the torques acting on the swash-plate is given in the paper, as well as the DC-based control consideration. The experimental setup with the hydrostatic transmission, and DC servo-motor as an swash-plate actuator is described. The cascade structure of the DC servo-motor control is explained and discussed in the paper. The experimental results of swash-plate control are given, too.

Control; hydraulics; hydrostatic transmission; modelling

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