Volvo Construction Equipment Ab

Volvo Autonomous Solutions Ab

Abb Schweiz Ag

Johan Sjöberg

Fredrik Gustafsson

Calle Skillsäter

Mats Molander

Kalevi Tervo

Jimmie Wiklander

Bin Liu

Ola Widlund

Erik Uhlin

Linus Eklund

Martin Enqvist

Rickard Lindkvist

Viktor Gustavsson

The invention relates to a method of controlling the working scheme () of an autonomous working machine () at a work site (). The method comprises the steps of: determining (S) the absolute position of a plurality of locations () of interest at the work site based on position data from a plurality of position sensors () distributed at the work site; generating (S), by means of a computer, a set working scheme () based on the position data; and executing (S) the set working scheme by the working machine.

Method of controlling the working scheme of an autonomous working machine at a worksite

The invention relates to a method for controlling an autonomous vehicle in a worksite. The method comprises the steps of: receiving a predetermined trajectory of a work sequence of the autonomous vehicle, the predetermined trajectory including at least a set path and a set speed; adding a pre-defined variation to the predetermined trajectory to form a test trajectory, the variation including at least a variation in set path or set speed; comparing the energy usage over the test trajectory and the predetermined trajectory; determining whether or not the compared energy usage achieves a pre-set criteria; and setting the test trajectory as a new set trajectory of the autonomous vehicle in response to determining that the compared energy usage achieves the pre-set criteria.

Method for controlling an autonomous vehicle operating at a worksite

A method for determining object position information indicative of the position includes at least the horizontal position of an object that is intended to be removed using an object removal machine. The method uses a working machine that includes an implement, and that is different from the object removal machine. The method includes arranging the implement such that at a position of at least a portion thereof has a determinable relation to the position of the object; determining the position of the implement, and determining the object position information using the position of the implement.

Method for determining object position information

An arrangement for a work site includes a radio transmitter arrangeable at the work site for transmitting signals receivable by a radio receiver arranged on a vehicle at the work site. The radio transmitter is arranged to define a work site zone of the work site by means of the coverage of the radio signals from the radio transmitter. A predetermined vehicle operation condition for the vehicle is different in the work site zone when receiving the radio signals compared to outside the work site zone when not receiving the radio signals.

Arrangement for differentiated control of vehicles on a work site

An electromagnetic bearing arrangement for a rotating equipment includes an electromagnet; an amplifier arrangement based on IGBT (Insulated-Gate Bipolar Transistor) switches; a power supply; a controller; and a position sensor. The controller includes a position control module and a direct force control module, the position sensor is operatively connected to the control module to calculate a force reference (F) based on the measured position of the rotating equipment. The electromagnetic bearing arrangement includes a sensor for measuring at least one parameter (i, i) indicative of a force exerted by the electromagnet to calculate an estimated force (F), to compare the force reference with the estimated force, and to control the amplifier.

Magnetic bearing arrangement and method of operating a magnetic bearing arrangement

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Västerås, Sweden

Johan Sjöberg