Abstract: The disclosure relates to a method for controlling a first electric motor (M1) and a second electric motor (M2) of a wheel drive module, wherein the wheel drive module comprises a wheel (R) and a speed modulation gearbox (G), and wherein the wheel (R) is drivable about a wheel axis (A) jointly by the first and the second electric motors (M1, M2) by means of the speed modulation gearbox (G) and steerable about a steering axis (L) which is orthogonal to the wheel axis (A), wherein electrical control signals for controlling the first and second electric motors (M1, M2) are determined from wheel reference values which characterize the driving and/or the steering of the wheel (R).

Abstract: A wheel drive module (1) is provided for driving and steering a wheel (30), comprising the wheel (30), a first drive motor (11), a second drive motor (21), and a transmission. The wheel (30) can be driven and steered simultaneously by the first drive motor (11) and the second drive motor (21) via the transmission, wherein a first motor shaft (12) for driving the transmission extends from the first drive motor (11) in a first motor shaft direction (12?), a second motor shaft (22) for driving the transmission extends from the second drive motor (21) in a second motor shaft direction (22?), the first motor shaft direction (12?) and the second motor shaft direction (22?) are opposite each other, and the first drive motor (11) and the second drive motor (21) extend parallel to the first and second motor shaft directions (12?, 22?) over a common overlap section (Ü).

Abstract: The present disclosure relates to a modular system for producing drives, in particular piece goods conveyor drives, with different drive properties, comprising at least one first group of transmission units, said first group comprising at least one transmission unit, at least one second group of motor units, said second group comprising at least one motor unit, and a third group of electronic units, said third group comprising at least one electronic unit for actuating the motor unit, wherein the groups can be combined together in order to produce the drive.

Abstract: A method for determining state values of a wheel (R) of a wheel drive module that includes the wheel (R), a speed modulation gearbox (G), a first electric motor (M1) and a second electric motor (M2), as well as at least one first sensor (S1) for sensing state values of the first electric motor (M1), at least one second sensor (S2) for sensing state values of the second electric motor (M2), wherein additional state value sources of the electric motors (M1, M2) and/or the wheel (R) are provided and the sensed state values are compared with each other in order to compensate for and to recognize errors in the sensing of the state values so that actual state values of the wheel (R) are determined from the individual sensed state values.

Abstract: A wheel drive module comprises wheel (R), speed modulation gearbox (G), first electric motor (M1), and second electric motor (M2). First and second electric motors (M1, M2) jointly drive wheel (R) about wheel axis (A) by the speed modulation gearbox (G) and steer said wheel about steering axis (L). Wheel drive module comprises first motor electronics (10) for controlling first electric motor (M1) and second motor electronics (20) for controlling second electric motor (M2) and central electronics (30) connected to first and second motor electronics (10, 20), allowing a signal transfer. Wheel drive module comprises control logic for controlling first and second electric motors (M1, M2), which logic is provided by first and second motor electronics (10, 20), central electronics (30), application electronics (40) connected to the central electronics (30), allowing a signal transfer, or jointly by the central electronics (30) and the first and second motor electronics (10, 20).

Abstract: The present disclosure relates to a modular system for producing drives, in particular piece goods conveyor drives, with different drive properties, comprising at least one first group of transmission units, said first group comprising at least one transmission unit, at least one second group of motor units, said second group comprising at least one motor unit, and a third group of electronic units, said third group comprising at least one electronic unit for actuating the motor unit, wherein the groups can be combined together in order to produce the drive.

Abstract: The invention relates to a wheel drive module (1) for driving and steering a wheel (30), comprising the wheel (30), a first drive motor (11), a second drive motor (21), and a transmission, wherein the wheel (30) can be driven and steered simultaneously by the first drive motor (11) and the second drive motor (21) via the transmission, wherein a first motor shaft (12) for driving the transmission extends from the first drive motor (11) in a first motor shaft direction (12?), a second motor shaft (22) for driving the transmission extends from the second drive motor (21) in a second motor shaft direction (22?), the first motor shaft direction (12?) and the second motor shaft direction (22?) are opposite each other, and the first drive motor (11) and the second drive motor (21) extend parallel to the first and second motor shaft directions (12?, 22?) over a common overlap section (Ü).

Abstract: A brake module (1) of a wheel module (2) has an anchor plate (20) adjacent to a wheel (10) and is indefinitely rotatable about the steering axis (L) with the wheel (10). A lifting unit (30) is fixed adjacent to the anchor plate (20) and fixed about the steering axis (L). A brake wheel (21) is arranged on the wheel shaft (11) and is rotatable about the wheel axis (R) with the wheel (10). At least one transfer element (22, 22?) extends from the anchor plate (20) towards the brake wheel (21). The lifting unit (30) is configured to move the anchor plate (20) from a first state to a second state. In the first state, the elements (20, 30, 22, 22?) are spaced apart without any contact. In the second state, the at least one transfer element (22, 22?) abuts against the brake wheel (21) generating a brake force at the brake wheel (21).

Abstract: The invention relates to a wheel drive module (1) comprising a wheel (30) and a transmission, wherein the transmission comprises a first and a second drive gear ring (15, 25) which are arranged such that they can rotate about a common rotation axis (R), the wheel (30) can be steered and driven by a respective rotation of the first drive gear ring (15) and the second drive gear ring (25), and a wheel-receiving space (20) extending along the axis of rotation (R) is defined between the first drive gear ring (15) and the second drive gear ring (25), in which the wheel (30) is arranged at least sectionally.

Abstract: The disclosure relates to a method for controlling a first electric motor (M1) and a second electric motor (M2) of a wheel drive module, wherein the wheel drive module comprises a wheel (R) and a speed modulation gearbox (G), and wherein the wheel (R) is drivable about a wheel axis (A) jointly by the first and the second electric motors (M1, M2) by means of the speed modulation gearbox (G) and steerable about a steering axis (L) which is orthogonal to the wheel axis (A), wherein electrical control signals for controlling the first and second electric motors (M1, M2) are determined from wheel reference values which characterize the driving and/or the steering of the wheel (R).

Abstract: A reel motor (1) for a driven conveyor roller has a stator (11) that is surrounded by a stator housing (10). A rotor (12) drives a rotor shaft (13). A tubular external housing (30) runs around the stator housing (10) at a distance in the circumferential direction. A cooling duct (20) is fluidically connected to an interior of the stator housing (10) holding the stator (11). The cooling duct 20 is formed between the external housing (30) and the stator housing (10). An impeller wheel (14) is secured to the rotor shaft (13). The impeller wheel generates a cooling air flow (K). The interior of the stator housing (10) and the cooling duct (20) determine a closed cooling circuit. The cooling air flow is guided through the closed cooling circuit.

Abstract: An electric motor (10) has: a stator (12) and a rotor (14) having a shaft (87). The rotor (14) has a sensor magnet (82) having a number SP of sensor poles (71, 72, 73, 74) 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 (450, 455, 460, 465) for generating rotor position signals (B_S1, B_S2) characterizing the magnetic flux density, the rotor position sensors (450, 455, 460, 465) being arranged in the region (30) of the circumference of the sensor magnet (82). The motor also has an evaluation apparatus (32) that ascertains, from the rotor position signals (B_S1, B_S2), an absolute value (phi_el, phi_mech) for the rotational position of the rotor (14). A method of generating an absolute value for the rotational position of an electric motor is likewise described.

Abstract: An electric motor has a stator (12) as well as a rotor (14) rotatable about a rotation axis (85) and a sensor magnet (82) having an even number of sensor poles (71, 72, 73, 74). The sensor magnet (82) 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 (460, 465) are arranged on a support structure (468) at a distance from one another such that, during operation, they generate two sinusoidal signals (B_S1, B_S2) having a phase shift of 90° to each other. A signal generator (90) serves to generate at least one pulse-shaped signal (A, B) from the two sinusoidal rotor position signals (B_S1, B_S2) that are phase-shifted by 90°. The instantaneous rotation speed can be accurately determined from this pulse-shaped signal.

Abstract: An electric motor has a stator (224) having a bearing tube (238) made of a magnetically transparent material; it also has a rotor (222) having a rotor shaft (234) that is at least partially journaled in the bearing tube (238), and has a ring magnet (250) that is fixedly arranged on the rotor shaft (234) inside the bearing tube (238). Two magnetic-field-dependent analog sensors (248?, 248?) are arranged on a circuit board (246) outside the bearing tube (238), 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 (250). A corresponding device (150) 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 (222).

Abstract: An electric motor has a stator (12) as well as a rotor (14) rotatable about a rotation axis (85) and a sensor magnet (82) having an even number of sensor poles (71, 72, 73, 74). The sensor magnet (82) 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 (460, 465) are arranged on a support structure (468) at a distance from one another such that, during operation, they generate two sinusoidal signals (B_S1, B_S2) having a phase shift of 90° to each other. A signal generator (90) serves to generate at least one pulse-shaped signal (A, B) from the two sinusoidal rotor position signals (B_S1, B_S2) that are phase-shifted by 90°. The instantaneous rotation speed can be accurately determined from this pulse-shaped signal.

Abstract: An electric motor has a stator (224) having a bearing tube (238) made of a magnetically transparent material; it also has a rotor (222) having a rotor shaft (234) that is at least partially journaled in the bearing tube (238), and has a ring magnet (250) that is arranged nonrotatably on the rotor shaft (234) inside the bearing tube (238). Two magnetic-field-dependent analog sensors (248?, 248?) are arranged on a circuit board (246) outside the bearing tube (238), 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 (250). A corresponding device (150) 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 (222).

Abstract: In an electronically commutated motor (M), rotor position signals are generated by means of a galvanomagnetic rotor position sensor (40). A timer (CNT_HL) brings about an advanced commutation which occurs only once the motor has reached a specific rotation speed, and whose magnitude is a function of the rotation speed.

Abstract: An electric motor has a stator and an external rotor (40). Its external rotor (40) has a sensor magnet (54) having a plurality SP of sensor poles (55). The motor also has: at least one rotor position sensor (42, 44) 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 (144) having a resolution of at least two bits, the at least one rotor position sensor (42, 44) 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.

Abstract: An arrangement having an electric motor (10) has a microcontroller (12) for influencing at least one motor function and a nonvolatile storage element (14) for storing at least one variable as a definition for that motor function. The arrangement also has an interface (13a) for a data line (13) for transferring the at least one variable, in particular a current limiting value (Iref) from or to a storage element (14) by way of the microcontroller (12), and optionally by way of an internal data bus (15). The invention also relates to use of the device in the context of batteries of fans, and program-controlled current limitation for startup of an electric motor (10).