The necessary sensitiveness for pressure sensors and force sensors - the sensor technology

State-of-the-art technology is a must when making even the smallest of movements where only minimal stick slip is required. By matching the sensor technology to the respective application it is possible to operate a cylinder in an extremely large working range. Positioning accuracy up to ± 0.1 mm can be effectively implemented using standard components. Nor does the exact control of high and low speeds present any problem. Through the utilisation of pressure and force sensors the path control can be extended to suit requirements. By selecting a suitable regulation strategy highly dynamic, precise linear drives can be created with an extremely high energy density.

Position transducer system

Dependent upon the travel speed, either magnetostrictive or inductive position transducer systems are used. Position transducer systems can even be deployed for regular positioning controls with standard dynamic requirements. They make their mark as a result of their excellent control characteristics. They are either integrated in the piston rod or mounted externally depending on the size of the cylinder.

Force sensor, pressure sensor

Depending upon whether an electrohydraulic axle is to be generated through pressure regulation or whether regulation using actual forces is preferred, it is advisable to use a force or pressure sensor.

Regulated oil flow – the valves

Continuous valves with integrated electronic circuits are provided for use in a Ratio Drive® system solution. The advantages offered by the integration of an electronic circuit are found in the lower installation effort required and the resistance to external influences. In principle, the valves are configured exactly to match the operating conditions and the drive's required dynamics.

Well protected – housing technology

The modules are ideally protected in the housing. They are not exposed to any external influences and are neatly packed away. That, however, is not the reason why Hänchen provides customised housings. The EMC regulation demands that all electronic components are appropriately housed. Of course, this could also be taken to mean an existing switching cabinet. The advantage afforded by Hänchen housing is the capability of installing the electronics directly in the vicinity of the deployment location.

Good advice – using control technology

At the end of the day, reliability in the area of hydraulic drive regulation is what it's all about. To this end the controller must be specifically configured for a hydraulic axle. For Ratio Drive® system solutions from Hänchen this is guaranteed and the user doesn't have to worry about having to configure the controller. The user can position the cylinder easily by specifying external set points. The user has access to digital and analogue interfaces for these set point specifications.