Abstract: A first magnetic sensor produces a first output signal in response to movement of a target such as a multi-pole ring magnet, and a second magnetic sensor produces a second output signal in response to movement of the target. The first and second magnetic sensors may be corresponding magnetoresistor sensors, the first and second magnetic sensors may be intertwined, the first and second magnetic sensors may be oriented at an angle with respect to one another so as to produce a difference in phase between the first and second output signals, the first and second magnetic sensors may be arranged so as to produce a 90° phase difference between the first and second output signals, and/or the first and second magnetic sensors may be formed on a semiconductor substrate.

Abstract: The invention relates to an active sensor element for recording the speed of an exhaust gas turbocharger, comprising a suppressor circuit which has at least one diode. In order to specify a device for temperature measurement at the turbocharger and in particular at the turbocharger in the region of the active sensor, the current-voltage characteristics of the diode are evaluated for determining the temperature in the sensor element.

Abstract: A wireless system for collecting data indicative of a tire's characteristics uses at least one open-circuit electrical conductor in a tire. The conductor is shaped such that it can store electrical and magnetic energy. In the presence of a time-varying magnetic field, the conductor resonates to generate a harmonic response having a frequency, amplitude and bandwidth. A magnetic field response recorder is used to (i) wirelessly transmit the time-varying magnetic field to the conductor, and (ii) wirelessly detect the harmonic response and the frequency, amplitude and bandwidth, associated therewith. The recorder is adapted to be positioned in a location that is fixed with respect to the tire as the tire rotates.

Abstract: A motorcycle wheel speed sensor mounting structure, includes an axle holder for supporting a front wheel is disposed below a front fork of the motorcycle and an axle support disposed in a lower part of the axle holder. Further, a caliper mount, for supporting a brake caliper of a disc brake, is disposed on a rear portion of the axle holder and a wheel speed sensor is mounted on the caliper mount, wherein the wheel speed sensor is located above a line connecting a lower end of the axle support to a lower end of the caliper mount.

Abstract: A method of improving efficiency of manufacturing a vacuum electronic device, includes placing sensors on the device's interior during its construction and obtaining a first measured characteristic value; comparing the first measured characteristic value with a desired characteristic value; determining whether the first measured characteristic value is within a predetermined percentage of the desired characteristic value; adjusting a component of the device and measuring the characteristic of the device to obtain a second measured characteristic, comparing the second measured characteristic value with a desired characteristic value, determining whether the second measured characteristic value is within a predetermined percentage of the desired characteristic value; and repeating the previous step until the second measured characteristic value is within the predetermined percentage of the desired characteristic value.

Abstract: A drive assembly for a vehicle door is provided. The drive assembly includes a motor having a driving member. The drive assembly further includes a housing having a shaft rotatably received therein. The drive assembly further includes an input member being rotatably received upon the shaft. The input member is operatively associated with the driving member. The drive assembly further includes a rotor fixedly secured to the shaft. The drive assembly further includes first and second Hall effect sensor modules mounted to the housing in a facing spaced relationship with respect to the plurality of teeth of the rotor that generate first and second signals, respectively. The first and second signals have a quadrature relationship with respect to one another and indicate a rotational direction of the rotor when the plurality of teeth are rotating past the first and second Hall effect sensor modules.

Abstract: A first magnetic sensor is formed on a semiconductor substrate, and the first magnetic sensor produces a first output signal in response to movement of a multi-pole magnet. A second magnetic sensor is formed on the semiconductor substrate so as to be intertwined with the first magnetic sensor and so as to be at a predetermined angle with respect to the first magnetic sensor. The second magnetic sensor produces a second output signal in response to movement of the multi-pole magnet. The predetermined angle is between 0° and 180° exclusive, and the predetermined angle is sufficient to produce a difference in phase between the first and second output signals. An output signal converter converts the first and second output signals to a linear signal.

Abstract: A versatile vehicle speed sensor compactly disposed on the outside in a radial direction of a gear. A motorcycle includes a power unit having a torque take-out shaft for outputting a torque generated by an internal combustion engine as a drive torque for driving a rear wheel, a torque transmission mechanism T which includes a gear pair consisting of bevel gears and a drive shaft and which transmits the drive torque to the rear wheel, and a vehicle speed sensor such that teeth of a driven gear constituting the gear pair constitute a portion to be detected. The vehicle speed sensor includes a main body portion having a detecting portion opposed to the addendum of the teeth in the direction of a normal to the addendum cone surface of the driven gear, and the main body portion extends along the normal direction.

Abstract: A motorcycle wheel speed transmission mechanism includes a gear housing affixed to the front fork of a motorcycle and having an outside receptacle and an outside sensor mount, a driven gear mounted inside the gear housing and rotatable with the front wheel of the motorcycle, an output gear mounted in the outside receptacle and meshed with the driven gear, an annular magnet holder mounted on the gear shaft of the output gear and defining therein a plurality of equiangularly spaced magnetic zones, and a speed sensor mounted in the sensor mount and electrically connected to an electronic speedometer of the motorcycle through a transmission line for detecting the revolving speed of the annular magnet holder and transmitting detected data to the electronic speedometer for display.

Abstract: A 2-wire, loop-powered shaft rotational speed sensor device that outputs a 4-20 mA current in response to the shaft rotational speed. The device is comprised of a sensor that senses an output from a sensor disk and outputs a series of voltage pulses whose frequency varies with the shaft rotational speed. A microcontroller measures this pulse frequency and generates a digital code representative of that frequency. A digital-to-analog converter generates an analog waveform in response to the digital code. A loop-powered, voltage-to-current circuit generates the output current in response to the analog waveform.

Abstract: A rotation angle detecting unit includes a pedal arm rotated by the pedal force transmitted from an accelerator pedal, an urging device urging the pedal arm in an opposite direction from a direction, in which pedal force is applied to the pedal arm, a pedal rotor engaging the pedal arm to transmit urging force of the urging device to the pedal arm, and a rotation angle detecting device detecting the rotation angle of the accelerator pedal. The rotation angle detecting device includes a movable part attached to the pedal rotor and thereby displaced together with the pedal rotor, and a stator that outputs an electric signal, which is associated with a rotational position of the pedal rotor due to one of magnetic and electric interactions with the movable part.

Abstract: A wheel speed transducer including a magnetic device associated with a wheel and a sensor device associated with the axle of the wheel provides data indicative of the velocity of the wheel. A processor located at the axle receives the wheel speed data and processes it to perform antiskid control functions. The velocity data is stored in a data concentrator also associated with the axle. A tire pressure sensor, a brake temperature sensor and a brake torque sensor, each associated with the wheel, send data to the processor at the axle, for storage in the data concentrator. A transmitting antenna associated with the axle and in communication with the data concentrator transmits stored data to a receiving antenna associated with the wheel. A data port at the wheel and in communication with the receiving antenna provides an interface to an external device for receiving the data.

Abstract: A rolling bearing assembly for a wheel includes a cylindrical fixed bearing ring fixed to a vehicle body side, a rotary bearing ring rotatably inserted to inside of the fixed bearing ring, and plural rows of rolling elements rollably arranged between the bearing rings. An annular sensor housing is attached to an inboard side end portion of the fixed bearing ring and includes a plurality of displacement sensors for detecting gaps between the displacement sensors and outer peripheral surfaces of inboard side end portions of the rotary bearing ring in a circumferential direction. Further, an inboard side end portion of the sensor housing is sealed by an inner side seal device.

Abstract: A speed sensor assembly comprises: a driveshaft with a driveshaft axis, a sensing portion of the driveshaft having an axial bore along the driveshaft axis and multiple axial slots radially spaced around the sensing portion that penetrate through the driveshaft into the axial bore; and at least one electromagnetic sensor with a magnetic circuit proximate the sensing portion of the driveshaft; wherein rotation of the driveshaft causes the slots in the sensing portion to sequentially pass through the magnetic circuit of the electromagnetic sensor, thereby causing a change in the reluctance of its magnetic circuit that induces the electromagnetic sensor to generate an output signal that is representative of the rotational speed of the driveshaft.

Abstract: Apparatus for detecting a passing magnetic article includes a peak detector providing a detector output signal that changes state when the magnetic field signal differs from a magnetic field tracking signal by more than a threshold offset amount. The threshold offset amount is dynamically variable in response to detection of a speed of rotation of the magnetic article and a peak-to-peak signal level of the magnetic field signal.

Abstract: Method and device for locating the right or left position of a wheel of a vehicle. The wheel has a magnetic measuring component including a core of ferromagnetic material on which are arranged, crosswise, two windings presenting maximum sensitivity axes extending in a plane intersecting the rotational axis of the wheel, and offset from each other, in this intersecting plane, by an angle ?, and on movements of the vehicle, a measurement is taken of a signal generated by the variation of a magnetic field at the terminals of each of the windings so as to deliver two periodic signals phase-shifted from each other by (+ or ?) ?, the direction of rotation of the wheel is determined from this phase difference and, from this direction of rotation and from the direction of movement of the vehicle, the location of the right or left position of the wheel is deduced.

Abstract: A sensor-incorporated wheel support bearing assembly including double rows of rolling elements interposed between respective raceways of outer and inner members opposed to each other, a to-be-detected ring having an eccentric or multangular outer diametric shape provided in the inner member and displacement sensors provided on the outer member confronting the to-be-detected ring. In the bearing assembly, the displacement sensors have facing portion areas, variable and invariable, respectively, arranged with rotation of the to-be-detected ring.

Abstract: A rotation sensor includes a magnetic sensor array including magnetic sensor elements in line, a rotatable magnet confronting the magnetic sensor array, a signal readout circuit to read out a signal from the magnetic sensor array, a repeating section to cause the signal readout circuit to repeat reading out the signal from the magnetic sensor array several number of times, and to calculate a summation or an average of several readout signals, and an angle calculating circuit to detect an angle of rotation of the magnet from the summation or the average of the signals calculated by the repeating section.

Abstract: A method estimates variations of position of the rotor of a motor having a plurality of uniformly spaced sensors that generate a position pulse at every rotation by a pre-established angle of the rotor. The method may include generating a first clock signal at a first frequency, generating a second clock signal at a second frequency multiple than the first frequency by a first factor, in each interval between two consecutive position pulses, counting the number of pulses of the first clock signal comprised in the interval, counting the number of pulses of the second clock signal comprised in the interval. The method may also include that each time the number of counted pulses of the second clock reaches the number of pulses of the first clock counted in an interval that precedes the currently considered interval, signaling that the position of the rotor has varied of an angle equal to the ratio between the pre-established angle and the factor.

Abstract: The magnetic sensor in the invention is arranged to detect a change of magnetic field caused by a movement of the magnetic movable by a magnetic sensor element arranged with a gap to the magnetic movable, to convert the detected change of magnetic field by first and second bridge circuits into electric signals, to generate first and second rectangular-wave signals by first and second comparator circuits depending upon the electric signals, and to form a signal having at least four levels by a signal forming circuit, thereby detecting a moving direction of the magnetic movable depending upon a level-change order in the signal. This makes it possible to detect a rotating direction of the magnetic movable rapidly and correctly.

Abstract: An apparatus and method that determines the incremental speed, position and direction of rotating targets using magnetoresistive sensors. A magnet is mounted on a rotating target on the same axis of rotation such that the magnet spins with the target. A magnetoresistive sensor is positioned proximate to the magnet such that the changes in magnetic field are detected by the sensors. An interpolating integrated circuit divides signals into small angular increments and converts data to digital form. These signals can be used to determine the angular speed, position, and direction of the rotating target. This results in a much more accurate determination of angular speed, position and direction of a rotating target regardless of the composition of the target or the environment in which it operates.

Abstract: A hub mountable speed sensing device comprising a housing, a metallic tubular insert adapted to be press-fitted with respect to said housing, a stationary speed sensing probe comprising a magnetic conversion device having a bias magnet and adapted to be inserted into the housing in close proximity to a rotating member having sensing teeth along its axis made of ferrous material, a locking arrangement provided to prevent the said detection probe from dislodging from said housing, and wherein the said bias magnet is adapted to generate magnetic flux which is interrupted by the rotor tooth while rotating and said magnetic conversion device providing for speed sensing based on the change in flux density.

Abstract: An increment sensor assembly inquires an microcontroller as to the last known increment when a vehicle is started. The last known increment data is used to rotate the sensor backward to reach a lower mechanical stop position or forward to reach an upper mechanical stop position. A timer tracks the sensor to ensure that one of the known stop positions is reached within a predetermined time period or performs a system check to determine what error has occurred. Once the sensor reaches one of the known stop positions an increment counter is reset and the sensor assembly begins normal operation.

Abstract: A sealing device in which a magnetic encoder is protected so as to improve detecting precision and reliability, without increasing the number of parts and assembling time and without enlarging a setting space, the sealing device is structured such that a detected portion is arranged in the sealed fluid side of an annular member. A first annular member fitted to a shaft is formed with an axial direction portion and diametrical direction portions extending in the inward and outward diametrical directions from the axial direction portion. One of the diametrical direction portions supports the detected portion in the sealed fluid side. A seal lip is in slidable contact with the other diametrical direction portion for sealing, and the seal portion is formed with the seal lip and the micro space.

Abstract: When a vehicle speed sensor is provided as a separate unit, the vehicle sensor should be removed when a vehicle wheel is changed. A brake caliper is fitted to an upper stay and a lower stay formed at a lower part of the front fork supporting the front wheel. The sensor stay is fitted to the inside of the lower stay in the vicinity of the brake caliper. A sensor cover is fastened integrally in an overlapping manner to the outside of the sensor stay. A projection formed on the sensor cover overlaps with a fitting bolt of the brake caliper. Thus, it is not possible to remove the brake caliper without first removing the sensor cover. Further, a vehicle speed sensor is sandwiched by the sensor stay and the lower end of the sensor cover and the three members are fastened together.

Abstract: An apparatus and a method provide an output signal indicative of a speed of rotation and a direction of rotation of a ferromagnetic object capable of rotating. A variety of signal formats of the output signal are described.

Abstract: The invention relates to a method for the manufacture of a switching device with a sensor unit located at a measurement end of a casing sleeve and connected to an electronic circuit located on a support received in the casing sleeve, and with a connection part located at a rear end of the casing sleeve. The method is characterized in that the sensor unit, support and connection part together with a shielding sleeve surrounding the support are assembled to form a dimensionally stable module and the latter is subsequently inserted in the casing sleeve, where it is received in fixing manner. According to a further aspect, the invention relates to a module for a switching device.

Abstract: An apparatus, system, and method for lightning strike protection and verification are provided. In one embodiment, the apparatus includes at least one fastener extending through both the structure and substructure to secure the structure and substructure together. The apparatus also includes an insert disposed between the substructure and at least a portion of the fastener, where the insert includes dielectric and magnetizable material such that the insert is capable of reducing the incidence of sparking between at least one component associated with the fastener and the substructure.

Abstract: An input shaft rotating speed detector detects an input shaft rotating speed Nin of an automatic transmission based on output signals from a resolver within a predetermined time period ?t1. An output shaft rotating speed detector calculates the number of pulse signals output from an electromagnetic pickup sensor within the predetermined time period ?t1, to detect an output shaft rotating speed Nout of the automatic transmission based on the time length of pulse intervals in the calculated number of pulse signals. With this configuration, the number of pulse signals used for calculating the output shaft rotating speed Nout can be changed, to thereby make a detection period of the output signals from the resolver used for calculating the input shaft rotating speed Nin be consistent with that of the pulse signals used for calculating the output shaft rotating speed Nout.

Abstract: A disc brake, especially for utility vehicles, which includes a caliper enclosing a brake disc, a pneumatically or electromotively operated tensioning device for tensioning the brake, which is located in the caliper, a magnet wheel rotating with the brake disc, and a stationary sensor for detecting the angle of rotation and the speed of the magnet wheel. The sensor is mounted at a distance from the magnet wheel and at least one line is connected to transmit pulses between the sensor and the magnet wheel. As a result, the sensor can be mounted on the housing protected from the action of heat and other environmental influences and so as to be easily accessible.

Abstract: The rolling bearing apparatus of the present invention comprises a rolling element, a non-rolling element disposed concentrically with the rolling element, and a rotation detector for outputting an input exciting voltage by converting it to an induced voltage according to the relative rotation state of the rolling element and the non-rolling element. The rotation detector comprises a rotor provided in the rolling element, a stator provided in the non-rolling element, and an exciting winding and output windings being wound to the stator. The output windings induce a voltage according to the gap permeance between the rotor and the stator in response to the exciting voltage inputted to the exciting winding.

Abstract: A wheel support bearing assembly comprises a stationary outer member and a rotatable inner member. The to-be-detected parts of angle detection sensors are fixed to the inner member and an outer race of a constant velocity joint connected to the inner member, respectively. Detecting parts of the angle detection sensors are fixed to the outer member in face-to-face relation with the to-be-detected parts. The bearing assembly also includes a load conversion unit detecting a relative angular difference between the inner member and the constant velocity universal joint by comparing the detection signals from the detecting parts to detect the load acting on the bearing assembly.

Abstract: A wheel speed detecting apparatus incorporated with a wheel bearing apparatus. The wheel speed detecting apparatus has an encoder, and an annular sensor holder arranged opposite to the encoder. The sensor holder has an annular fitting member formed from a steel plate. A holding portion is integrally molded with the annular fitting member. A wheel speed sensor is arranged opposite to the encoder. Several substantially circular arc notches are formed on the outer circumference of the holding portion so that portions of the periphery of the annular fitting member are exposed from the holding portion.

Abstract: A rotor for a rotation sensor may be mounted on a bearing that supports a wheel on an automotive vehicle so that it can detect the number of revolutions for the wheel. The rotor for a rotation sensor 1 includes a reinforcing ring 2 formed like an L-shape in cross section, including a cylindrical part 3 adapted to be fitted on a peripheral surface of the rotating part of the bearing (inner race or outer race) and a flanged part 4 bent at an end edge of the cylindrical part 3, from which it extends in the radial direction. A multi-pole magnet 10 is attached to the axial outer lateral side of the flanged part 4, and a non-magnetic covering 6 encloses the axial outer lateral side of the multi-pole magnet 10 and has a peripheral edge on its one end secured to the reinforcing ring 2.

Abstract: A device for detecting the position of a mobile target equipped with at least one pattern and mounted so as to define a magnetic gap in which are placed at least two probes which are sensitive to the intensity of a physical magnitude where, for each passage of a pattern in front of a probe, the movement of the target causes a variation in the intensity of the physical magnitude detected by the probe.

Abstract: The present invention provides a conveying mechanism capable of precisely detecting a conveyance amount of an object to be conveyed with a simple configuration. A head suspension assembly includes a suspension having a pair of attachment parts and an arm extending in a U shape so as to connect the pair of attachment parts to each other and showing elasticity in a Z axis direction, and a magnetic sensor provided on the arm. The arm deflects in the Z axis direction in accordance with the magnitude of an external force pressing the magnetic sensor against a recording surface. Even in the case where the recording surface slightly fluctuates in the Z axis direction at the time of conveying operation, the contact state between the magnetic sensor and the recording surface can be maintained in the range that the arm can deflect. Consequently, magnetic information on the recording surface can be precisely read and the rotation amount of a conveying roller can be detected with high precision.

Abstract: A combined sensor and bearing assembly (1) is of a type having a capability of detecting a point of origin and includes a rolling bearing unit (6) and a rotation sensor unit (31). The rolling bearing unit (6) is made up of a rotatable raceway member (4), a stationary raceway member (5) and at least one row of rolling elements (3). The rotation sensor unit (31) includes a to-be-detected member (8) having a magnet and fitted to one of the raceway members (4, 5), and a magnetic detecting member (9) fitted to the other raceway member (4, 5) at a location confronting the to-be-detected member (8).

Abstract: A device for sensing the input shaft speed of an automotive automatic transmission that is driven by the engine through the fluid coupling of a torque converter. The speed sensor device includes circumferentially spaced markings about the transmission input shaft and a speed sensor that is placed at close proximity to the circumferentially spaced markings through a hole in the torque converter stator shaft. An electronic control unit (ECU) analyzes the sensor output signal and in the case of an active speed sensor it also functions as its power source. During vehicle operation, the transmission input shaft rotates the target wheel in front of the speed sensor causing modulation of its output signal. The electronic control unit analyzes the signal modulation and calculates the input shaft rotational speed. A variety of sensor/target-wheel options and sensor mounting techniques could be used depending on the application constraints.

Abstract: A probe for sensing the movement of a body of magnetic material comprises a magnetically energisable pole piece and a plurality of electrically conductive circuits, coupled to the magnetic pole piece, such that a change in magnetic flux in the pole piece caused by movement of the body relative to the pole piece induces a voltage in each of the circuits. The electrically conductive circuits are wound around in a symmetrical fashion each other such that in the vicinity of the magnetic pole piece each circuit experiences substantially the same change in magnetic flux. A probe of this type provides a plurality of substantially identical output signals and is easy to manufacture and replicate.

Abstract: Method and apparatus for monitoring the rotational speed of a shaft, in particular a shaft having a number of spaced features on or rotating with the shaft. Preferred embodiments of the invention are concerned with methods and apparatuses for processing signals in order to calculate, with high accuracy and a fast response time, the rotational speed of a gas turbine shaft. The invention recognises that it is possible to accurately measure speed between two eddy current sensors (5, 6) by determining the time take for a turbine blade to pass therebetween provided that appropriate compensation is made for the effect of apparent changes in the magnetic distance between the sensors.

Abstract: A method for evaluating a sensor signal provided by a magnetic field sensor which is arranged at a distance from an object which is rotatable about an axis of rotation. The method includes defining an encoding pattern with a sequence of symbols, the sensor signal being dependent on the encoding pattern and at least one transmission parameter; regenerating the symbols of the encoding pattern from a corrected sensor signal using a threshold value detector to obtain an output signal; generating a filtered signal from the output signal using a filter having a plurality of filter coefficients; superposing the sensor signal and the filtered signal to obtain the corrected sensor signal; and wherein the corrected sensor signal and the output signal are used to estimate the at least one transmission parameter, and the filter coefficients are derived from the estimated transmission parameter.

Abstract: The invention relates to an inductive sensor with an electrical coil assembly (1, 2,3) which has a coil body (2) and a wire wound coil (1), wherein at least one wire end (6, 7) is guided out of the wire wound coil (1) to electrical connection elements (17, 18) which connect the coil assembly (1, 2, 3) to the surrounding area, wherein the coil assembly (1, 2, 3) is at least partly extrusion-coated by an extrusion-coat mass (12) and is located in a pot-shaped housing (13). Therefore, an improved inductive sensor with regard to temperature change stability is specified. Said inductive sensor has at least one barrier (10, 11, 100) near the wire ends (6, 7) which are guided out of the wire wound coil (1) and is located between the wire ends (6, 7) which are guided out of the wire wound coil (1) and the injection point of the extrusion-coat mass (12) during the extrusion-coating.

Abstract: The invention relates to an active sensor element for recording the speed of an exhaust gas turbocharger, comprising a suppressor circuit which has at least one diode. In order to specify a device for temperature measurement at the turbocharger and in particular at the turbocharger in the region of the active sensor, the current-voltage characteristics of the diode are evaluated for determining the temperature in the sensor element.

Abstract: An IC tag 23 is fixed to a central portion of an axially outer end portion face of a hub 10a which is a rotational ring which makes up the wheel supporting bearing unit 5a. Historical information of the wheel supporting bearing unit 5a is stored in the IC tag 23. The historical information stored in the IC tag 23 can be read easily by the use of an external device 28. Due to this, the traceability of the wheel supporting bearing unit 5a can be increased.

Abstract: An annular member is mounted on an outer ring, and a sensor is fixed to the annular member. The annular member includes a fixing portion, and a cover portion. The sensor is fixed to the fixing portion by a bolt and a nut. The fixing portion is fixed to the cover portion by bolts. The cover portion is separate from the fixing portion, and therefore does not have an opening extending in a circumferential direction, and covers a magnet rotor fitted on an inner ring in the circumferential direction.

Abstract: A wireless system for collecting data indicative of a tire's characteristics uses at least one open-circuit electrical conductor in a tire. The conductor is shaped such that it can store electrical and magnetic energy. In the presence of a time-varying magnetic field, the conductor resonates to generate a harmonic response having a frequency, amplitude and bandwidth. A magnetic field response recorder is used to (i) wirelessly transmit the time-varying magnetic field to the conductor, and (ii) wirelessly detect the harmonic response and the frequency, amplitude and bandwidth, associated therewith. The recorder is adapted to be positioned in a location that is fixed with respect to the tire as the tire rotates.

Abstract: The invention relates to a method for applying a magnetic mark to a rotatable article (1) to be positioned, to a corresponding device and to a system (2) consisting of a device for applying a magnetic mark and a device (25) for determining the angle of rotation. In the region that comprises magnetizable material of the rotatable article to be positioned and is selected for determining the angle of rotation, a magnetic dipole is generated as a magnetic mark by a magnetic field, by means of the device for applying a magnetic mark. Said mark is used for determining the angle of rotation of the rotor.

Abstract: A speed sensor assembly includes a bearing having a first race, a second race, a plurality of ball bearings separating the first race from the second race, and a tone wheel coupled to the second race. The speed sensor assembly also includes a spacer abutting the first race and a sensor positioned adjacent the tone wheel.

Abstract: A wheel speed transducer including a magnetic device associated with a wheel and a sensor device associated with the axle of the wheel provides data indicative of the velocity of the wheel. A processor located at the axle receives the wheel speed data and processes it to perform antiskid control functions. The velocity data is stored in a data concentrator also associated with the axle. A tire pressure sensor, a brake temperature sensor and a brake torque sensor, each associated with the wheel, send data to the processor at the axle, for storage in the data concentrator. A transmitting antenna associated with the axle and in communication with the data concentrator transmits stored data to a receiving antenna associated with the wheel. A data port at the wheel and in communication with the receiving antenna provides an interface to an external device for receiving the data.

Abstract: An assembly that includes a target component mounted for rotation about an axis, a sensor mounted adjacent the inner member and directed toward the inner member to measure the rotational speed of the target component and an outer component interposed between the sensor and the target component. Low magnetic permeability of the outer component is assured by appropriate selection of the material, maintaining the concentration of martensite in the outer component below a reference concentration as indicated by certain reference indices such as the Instability Function, and/or by maintaining the temperature at which a stamping operation is performed on the inner member above a pre-determined temperature.