Mannesmann Rexroth Corporation

Robert Boschgmbh

Joachim Neumann

Stefan Schmidt

Michael Reinert

Alexander Meisselbach

Alfred Feuser

Thomas Kison

Marco Genise

Walter Voxbrunner

An electronic controller includes a housing. The housing has an opening configured such that a radio module is removably insertable into the housing, and a cover and plug are also insertable into the housing.

Controller with insertable radio module, as well as radio module, cover and plug

Control system for hydraulic power units

The object of the invention is to improve the position and feed or advance regulation of a hydraulic drive which is controlled by a proportional valve. In a first compensation circuit the flow characteristic of the proportional valve is linearized to obtain very small feed rates and a high control amplification. In a second compensation circuit the positioning error of the drive arising from the necessary overlapping of the proportional valve is compensated.

Circuit arrangement for position and feed control of a hydraulic cylinder

For path control of a plurality of drives, i.e. for driving a plurality of drives in different axes in geometrical path dependence, to obtain high accuracy it is necessary for the lag error of the drives to remain constant. According to the invention for this purpose a circuit arrangement is proposed in a cascade structure in which from the speed of each individual path drive and the control deviation determined from the actual value and desired value of the position a difference signal is formed which is integrated and added to the output signal of a P controller.

Circuit arrangement for a hydraulic drive in a position control circuit

Growing community of inventors

Lohr am Main, Germany

Joachim Neumann