A method for pairing a measurement module with a wheel of a motor vehicle. The wheel revolution frequency value and the total number of acquisitions are sent with the emission angle value to the computer that stored a current angular position for at least one wheel and a series of angular positions. The computer selects angular positions sampled from a series of angular positions up to a total number of acquisitions, then filters the wheel revolution frequency, which filtering is similar to the filtering performed in the measurement module in order to obtain a sampled and filtered angular position and is then compared with the angular position with, for a difference of less than an experimentally predetermined percentage, a validation of the phase shift between the emission angles of the signals of the measurement module and the angular positions.

A method for pairing a measurement module with a wheel of a motor vehicle. The wheel revolution frequency value and the total number of acquisitions are sent with the emission angle value to the computer that stored a current angular position for at least one wheel and a series of angular positions. The computer selects angular positions sampled from a series of angular positions up to a total number of acquisitions, then filters the wheel revolution frequency, which filtering is similar to the filtering performed in the measurement module in order to obtain a sampled and filtered angular position and is then compared with the angular position with, for a difference of less than an experimentally predetermined percentage, a validation of the phase shift between the emission angles of the signals of the measurement module and the angular positions.

A method for detecting a loosened bolted wheel joint on a wheel of a vehicle. The angular velocity of a hub of the wheel is evaluated. A periodic wheel modulation of the angular velocity is ascertained. An oscillation of the wheel generated due to the loosened bolted wheel joint is detected, using a step-change in a phase angle of the modulation by an expected angular increment, which is a function of the number of bolts.

A universal electronic hubodometer with a single sensor system and method capable of electronically monitoring and/or processing the rotations of an object (e.g., a hubcap, wheel-hub, wheel, or tire) and wirelessly communicating any measured data to a mobile device (e.g., a mobile phone, PDA, cell phone, smartphone, or tablet). In one embodiment the universal electronic hubodometer may be capable of electronically determining the revolutions of an object using a single accelerometer while managing to overcome the problems of current hubodometers.

A propulsion system is described that includes an electrical bus, a generator configured to provide electrical power to the electrical bus, a plurality of propulsors configured to provide thrust by simultaneously being driven by the electrical power at the electrical bus, and a controller. The controller is configured to synchronize a rotational speed of an individual propulsor from the plurality of propulsors with a rotational speed of the generator after the individual propulsor has become unsynchronized with the rotational speed of the generator by controlling at least one of the rotational speed of the generator, nozzle area of the individual propulsor, or a pitch angle of the individual propulsor.

A propulsion system is described that includes an electrical bus, a generator configured to provide electrical power to the electrical bus, a plurality of propulsors configured to provide thrust by simultaneously being driven by the electrical power at the electrical bus, and a controller. The controller is configured to synchronize a rotational speed of an individual propulsor from the plurality of propulsors with a rotational speed of the generator after the individual propulsor has become unsynchronized with the rotational speed of the generator by controlling at least one of the rotational speed of the generator, nozzle area of the individual propulsor, or a pitch angle of the individual propulsor.

An oscillation device and an electronic device are provided. The oscillation device is applied to the electronic device. The electronic device includes a fan. The oscillation device includes a detection module, an oscillation module, a variable capacitance module, and a control module. The control module is electrically coupled with the detection module, the variable capacitance module, and the oscillation module. The control module is configured to determine a capacitance adjustment parameter according to a preset correspondence, and a temperature of the electronic device and/or a rotational speed of the fan, where the preset correspondence includes a correspondence between capacitance adjustment parameters and temperatures of the electronic device and/or rotational speeds of the fan. The control module is configured to adjust a capacitance of the variable capacitance module according to the capacitance adjustment parameter.

An oscillation device and an electronic device are provided. The oscillation device is applied to the electronic device. The electronic device includes a fan. The oscillation device includes a detection module, an oscillation module, a variable capacitance module, and a control module. The control module is electrically coupled with the detection module, the variable capacitance module, and the oscillation module. The control module is configured to determine a capacitance adjustment parameter according to a preset correspondence, and a temperature of the electronic device and/or a rotational speed of the fan, where the preset correspondence includes a correspondence between capacitance adjustment parameters and temperatures of the electronic device and/or rotational speeds of the fan. The control module is configured to adjust a capacitance of the variable capacitance module according to the capacitance adjustment parameter.

Inductive position sensor system for high-speed motors, without said sensor system comprising magnets, brushes or magnetic shields, the sensor system comprising a sensor which comprises an inductor coil and a passive coil, the inductor coil inducing voltage in the passive coil, and an electronic signal processing circuit, said electronic circuit comprising a chip for processing a signal corresponding to the magnetic field induced in the passive coil; the sensor system also comprising a conductor element which is movable with respect to the passive coil such that the magnetic field induced in the passive coil varies; wherein the sensor comprises three coils, one of said three coils being an inductor coil and two of said three coils being passive coils; and the chip is an analogue chip, said analogue chip supplying an analogue sine-cosine output signal.

A magnetic belt used in magnetic sensing device for measuring a rotation speed of a rotating shaft comprises a belt body adapted to be wound around a perimeter of the shaft in the shape of a circle and fixed thereto. The belt body includes a row of toothed protrusions arranged on a first outer surface of the belt body. With the belt body arranged on the shaft, the toothed protrusions are evenly spaced around a circumference of the rotation shaft.