The invention relates to a method for identifying a fault (96) in an angle sensor (24) which is designed to determine the angular position (18) of a shaft (14) based on an angular position difference (56) between a first output gear (32), which is driven by the shaft (14), and a second output gear (34), which is driven by the shaft (14), the output gears differing in respect of their diameter (34, 36), said method comprising: determining a reference value (18, 52) for the angular position (18) of the shaft (14) based on the angular position (42) of the first output gear (32), determining a comparison value (18, 52) for the angular position (18) of the shaft (14) based on the angular position (46) of the second output gear (34) and a transmission ratio (90) between the first output gear (32) and the second output gear (34), and identifying the fault (96) when a comparison (93, 94) of the reference value (18, 52) and the comparison value (18, 52) satisfies a predetermined condition (95).

A magnetism detecting element detects a leakage magnetism from a scale, on which a magnetic signal with a constant period is recorded, and a relative position between the scale and the magnetism detecting element is detected. The magnetism detecting elements are arranged, along a detection direction of the magnetic signal relative to the scale, in a pattern with a pitch of n (n is a prime number of 3 or more) of a wavelength of a signal output by the element. Furthermore, as the pattern for cancelling m odd-order harmonics, the m-th power of 2 magnetism detecting elements are arranged within a range in which a pitch distance L of the magnetism detecting element farthest in the detection direction is expressed by L=(/2)(++ 1/7+ . . . 1/(2m+1)).

The invention provides a measurement sensor for determining the position of a moving body, the sensor comprising a series of at least four detector probes for detecting a physical magnitude coming from a target comprising at least one track for creating a physical magnitude that is measurable by the detector probes and that varies along the path of the target with a function that is continuous and that includes a first harmonic and a second harmonic, the probes being connected to a processor unit for processing signals delivered by the probes, the processor unit including a reconstruction system for performing a linear combination of the signals and for obtaining firstly two quadrature signals including solely the first harmonic, and secondly two quadrature signals including solely the second harmonic, the unit also including a calculation system for processing the quadrature signals in order to determine the position of the moving body.

A lighting control console for controlling a lighting system, wherein digital adjusting commands are generated in the lighting control console that can be transmitted to the lighting system via data links. At least one dual encoder is provided in the control panel of the lighting control console which allows users to enter input values. The dual encoder includes a first shaft and a second shaft rotatably mounted in a housing, first and second locking mechanisms for locking different rotational positions of the first and second shafts, and at least one first and at least one second rotation signal generator for generating a data signal showing a switchover between two locking positions. Both shafts include actuating elements at which adjusting movements can be transmitted onto the shafts by hand.

A magnetism detecting element detects a leakage magnetism from a scale, on which a magnetic signal with a constant period is recorded, and a relative position between the scale and the magnetism detecting element is detected. The magnetism detecting elements are arranged, along a detection direction of the magnetic signal relative to the scale, in a pattern with a pitch of n (n is a prime number of 3 or more) of a wavelength of a signal output by the element. Furthermore, as the pattern for cancelling m odd-order harmonics, the m-th power of 2 magnetism detecting elements are arranged within a range in which a pitch distance L of the magnetism detecting element farthest in the detection direction is expressed by L=(/2)(++ 1/7+ . . . 1/(2m+1)).

An angle sensor is disclosed. The angle sensor has a disc, a first magnetic pattern disposed on a side of the disc and including a number N1 of first portions of spirals regularly distributed in a first ring, and a second magnetic pattern disposed on a side of the disc and including a number N2 of second portions of spirals regularly distributed in a second ring. The numbers N1 and N2 are coprime and N1 is different from N2, N21, and N2+1.

A magnetic encoder device (3) of the present invention includes a base portion (33) having a mounting surface (33b) for mounting to a rotary shaft (2), a cored bar (35) fitted and fixed over the base portion (33), and a double-row magnetic encoder track (30) formed on the cored bar (35). Through movement of each of magnetic poles of the magnetic encoder track (30) over a region opposed to a magnetic sensor (4), an angle of the rotating rotary shaft is detected. The base portion (33) is formed of a sintered metal, and the mounting surface (33b) is subjected to sizing.

An inductive position-measuring device for absolute position determination includes a scale having a first measuring graduation extending in a measurement direction and a second measuring graduation disposed opposite to the first measuring graduation and extending parallel thereto. A scanner is disposed in a gap between the first measuring graduation and the second measuring graduation. The scanner is displaceable relative to the scale in the measurement direction for purposes of position measurement. The scanner includes a first coil arrangement for scanning the first measuring graduation and generating a first position-dependent scanning signal, and a second coil arrangement, disposed opposite to the first coil arrangement, for scanning the second measuring graduation and generating a second position-dependent scanning signal. At least one intermediate layer of soft magnetic material disposed between the first coil arrangement and the second coil arrangement.

Embodiments of the present disclosure relate to a magnetic position sensor (100; 200). The magnetic position sensor (100; 200) includes a magnetic field source (110; 210) with at least a first multi-pole magnet strip (120-1; 220-1) arranged on a first surface and with at least a second multi-pole magnet strip (120-2; 220-2) arranged on a second surface perpendicular to the first surface. The first and the second multi-pole magnet strips are arranged in a fixed relative position to each other and comprise different numbers of magnet poles (130; 132; 230; 232) along a common length.

The rotation angle and torsion angle sensor detects both the rotational position of a shaft and a torque applied to the shaft torque. The shaft a first shaft part and a second shaft part, which are interconnected by a torsion bar. A sensor disc is coupled via a rigid circumferentially and axially flexible membrane with the first shaft part. The sensor disc is coupled to a drive wheel via a coupling device, in such a way that the sensor disc is displaced in the axial direction upon relative rotation of the two shaft parts against each other, wherein the membrane bends in the axial direction.