Sensorless position control system of hydraulic linear stepper actuator.

The paper discusses a sensorless position control system based on the applied principles of the
digital hydraulic system (DHS). In the paper presents a design and working principle of a sensorless position
control system whose hydraulic linear stepper actuator is controlled by a combination of single binary on/off
valves. The dynamic model and digital simulation results of a design of sensorless position control of the
hydraulic linear stepper actuator are presents. For this purpose, the bond graph method representing the
functional structure of the hydraulic positioning system was used. Preliminary simulation tests were
conducted to determine the basic dynamic characteristics of the hydraulic linear stepper actuator. The
dynamic properties of the hydraulic linear stepper actuator were estimated.