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US 7,227,319 B2Granted
Method for driving a machine and drive for said machine
AssigneePicanol N.V.
InventorsMarc Adriaen, Andre Vandenbroucke, Chris Noppe
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AssigneePicanol N.V.
InventorsMarc Adriaen, Andre Vandenbroucke, Chris Noppe
Estimating the term…
A drive system for a machine, in particular a weaving machine, is designed in a manner such that controlled electric power is applied to a rotary electric drive motor (2) as a function of particular angular positions of the motor and such that electrical energy applied to the motor is reduced or interrupted during phases of increasing angular speed of the motor. Phases of increasing angular speed are detected by the drive system to determine phases of increasing angular speed. A method for controlling an electrical motor drive system using a switchable reluctance motor to reduce or interrupt electrical energy supplied to the motor based on motor speed increases as a function of motor angular position is also disclosed.
A method for driving a machine comprising at least one periodically moving part and including an electric drive motor which is a switchable reluctance motor to the windings of which electrical energy may be supplied in a controlled manner according to the respective angular position of the motor to rotate with variable rotating speed as a function of the periodical movement of the at least one periodically moving part, for which purpose angular positions of the drive motor are acquired and the windings are supplied with energy controlled in relation to the respective angular position, wherein first a speed course of the machine is acquired as a standard curve for the natural angular speed of the machine and data are stored representing the peaks of the natural angular speed, and then phases of increasing angular speed are acquired from that standard curve, and wherein for the duration of the phases of increasing angular speed, electrical energy supply to the motor is interrupted or reduced to a constant value.
A drive system for a machine comprising at least one periodically moving part and including an electric drive motor which is electrically powered by means of a control unit as a function of a respective angular position, wherein the control unit comprises devices detecting phases of increasing angular speed and devices to substantially reduce or interrupt electrical energy supplied to the electric drive motor within said phases.
Dependencies are inferred from the claim text.