Bernd Winkler, Rudolf Scheidl,
"Automatic level control in agricultural machinery"
: Proceedings of the 2nd FPNI-PhD Symposium on Fluid Power, Modena, Italy, Fluid Power Net International, 2002, ISBN: 88-88679-00-6
Automatic level control in agricultural machinery
Sprache des Titels:
Proceedings of the 2nd FPNI-PhD Symposium on Fluid Power, Modena, Italy
Mainly for rationalization of agricultural work speed of operation and quality requirements are steadily
increasing. As a consequence, operational performance characteristics of many tractor implements have to be
improved with respect to speed, response time, failure probability and accuracy. In some cases state of the art
solutions do not meet this requirements. In particular, mechanical distance devices in grass harvesting machines,
such as simple wheels, rollers or vats do not fit to operating speeds required in near future.
The method of resolution presented in this paper is an automatic level control unit of the pick-up device of a
harvester. The presented concept replacing common distance devices is able to fulfil the mentioned requirements
of increasing speed of operation and avoidance of damage.
The most challenging aims to be achieved was scanning the very rough agricultural working surface, realizing
short reaction times by means of hydraulic actuators and to develop a proper control unit.
Besides the technical realization of these functions it is essential to keep costs low according to limitations in