Ebm-papst St. Georgen Gmbh & Co Kg

Christian Rudel

Jörg Hornberger

Joerg Hornberger

Siegfried Schreiner

Hermann Rappenecker

Michael Schaeuble

Hassan Ghodsi-Khameneh

Michael Kisch

Thirza Weiser

Achim Honold

Michael Schäuble

A stator device with a plurality of windings, on a winding carrier, that electromotive interaction with a rotor. The windings are parallel to one another and to the center axis. The windings can be individually electrically contacted with winding terminals of a winding wire. The windings are assigned to at least two disk-shaped and/or ring-shaped electrically conductive interconnection rings so that they are electrically insulated from one another. The winding terminals are connected using the interconnection ring assigned to this terminal polarity (U; V; W) for external permanent common contact by welding hooks formed on the radial inner side on the interconnection ring. A ring-shaped deflection disk, with deflection pins, is provided in the axial direction on the interconnection end disk.

Stator device with interconnection end disk for an electric motor and use of the stator device

An electric motor () has: a stator () and a rotor () having a shaft (). The rotor () has a sensor magnet () having a number SP of sensor poles () for generating a predetermined distribution of the magnetic flux density, such that SP=2, 4, 6, 8, etc. The motor also has at least two rotor position sensors () for generating rotor position signals (B_S, B_S) characterizing the magnetic flux density, the rotor position sensors () being arranged in the region () of the circumference of the sensor magnet (). The motor also has an evaluation apparatus () that ascertains, from the rotor position signals (B_S, B_S), an absolute value (phi_el, phi_mech) for the rotational position of the rotor (). A method of generating an absolute value for the rotational position of an electric motor is likewise described.

Absolute encoder and method for generating an absolute value for a angle of rotation

An electric motor has a stator () as well as a rotor () rotatable about a rotation axis () and a sensor magnet () having an even number of sensor poles (). The sensor magnet () is configured to generate a magnetic flux having a magnetic flux density that changes sinusoidally with respect to the rotation angle. Two analog rotor position sensors () are arranged on a support structure () at a distance from one another such that, during operation, they generate two sinusoidal signals (B_S, B_S) having a phase shift of 90&#xb0; to each other. A signal generator () serves to generate at least one pulse-shaped signal (A, B) from the two sinusoidal rotor position signals (B_S, B_S) that are phase-shifted by 90&#xb0;. The instantaneous rotation speed can be accurately determined from this pulse-shaped signal.

Electric motor

An electric motor has a stator () having a bearing tube () made of a magnetically transparent material; it also has a rotor () having a rotor shaft () that is at least partially journaled in the bearing tube (), and has a ring magnet () that is fixedly arranged on the rotor shaft () inside the bearing tube (). Two magnetic-field-dependent analog sensors (&#x2033;) are arranged on a circuit board () outside the bearing tube (), at an angular distance (PHI) from one another, in order to generate rotor position signals as a function of the rotational position of the ring magnet (). A corresponding device () that serves to control the motor is provided, in order to process these rotor position signals into a signal that indicates the absolute rotational position of the rotor ().

Brushless electric motor

An electric motor has a stator and an external rotor (). Its external rotor () has a sensor magnet () having a plurality SP of sensor poles (). The motor also has: at least one rotor position sensor () for generating a rotor position signal and a rotor position evaluation arrangement for generating an absolute value for the rotor position, which apparatus comprises an A/D converter () having a resolution of at least two bits, the at least one rotor position sensor () being connected to the A/D converter. In order to enable obtaining different digital values, even at rotational positions within the angle range of one sensor pole, each analog rotor position sensor signal is converted by the A/D converter into a digital value having at least two bits.

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Königsfeld, Germany

Christian Rudel