Inventors list

Assignees list

Classification tree browser

Top 100 Inventors

Top 100 Assignees


Achterberg

Jan Achterberg, Duisburg DE

Patent application numberDescriptionPublished
20110181227Method of Determining the Position of the Drive Mechanism of an Electric Machine, Such as a Motor, from the Current Supplied, and Arrangement for Carrying Out the Method - A method and arrangement for determining the position of the drive mechanism of an electric machine from the current supplied thereto. Determination of the position is effected over two independent channels by measuring the three-phase current of the electric machine or motor, converting the measured values to the current space vector, calculating the angle of the current space vector within one electrical revolution, and determining the position of the motor. A current command, the field of which acts in the direction of the flux or field of the drive mechanism or rotor, is added within the motor stator.07-28-2011

Lorraine J. Achterberg, St. Joseph, MI US

Patent application numberDescriptionPublished
20090260403Modular Laundry System with Work Surface Having a Functional Insert - A modular laundry system comprises at least one laundry appliance with a closed top and a worksurface that extends over the closed top of the at least one laundry appliance and comprises a functional insert provided on the worksurface. The modular laundry system can further comprise a second laundry appliance with a closed top, and the work surface can extend over both laundry appliances.10-22-2009

Tobias Achterberg, Berlin DE

Patent application numberDescriptionPublished
20110131167LP relaxation modification and cut selection in a MIP solver - Mixed integer programs (MIP) are solved by constructing and solving associated linear programming (LP) relaxation problems. The LP relaxations are iteratively constructed through the introduction of cutting planes that are derived using one solution of an LP, then filtered based on an alternative solution to the LP. The LP relaxation is constructed, and its alternate solution is derived, to efficiently converge to a solution for the MIP.06-02-2011