A method for relieving residual stresses in a part includes increasing the rotation speed, which includes measuring, at a first given instant, values representative of the rotation speed and the radial enlargement; measuring, at a second given instant after the first instant, values representative of the rotation speed and the radial enlargement; determining a leading coefficient of a first affine function from the preceding values; determining a target radial enlargement value as a function of a value representative of the rotation speed, in the form of a second affine function, the origin of which is the value of a desired final residual enlargement and the leading coefficient of which is the leading coefficient of the first affine function; stopping the increase in rotation speed of the part from the moment that the actual enlargement of the rotating part corresponds to the target relative radial enlargement value that has been determined.

A method for determining a position of a magnet assembly relative to an array of inductive elements arranged adjacent to a magnetically permeable material, the method involving: measuring electrical characteristics of each of one or more inductive elements of the array of inductive elements; and from information derived from the measured electrical characteristics of the one or more inductive elements of the array of inductive elements, determining the position of the magnet assembly relative to the array of inductive elements.

In a method of determining a radius or diameter of a train wheel, a camera mounted on a train acquires first and second images (pictures) of first and second objects spaced along a path being traveled by the train. Matches are then determined between the first and second objects appearing in the first and second acquired images and representations (pictures) of the first and second objects appearing in prerecorded images included in a track database that include corresponding first and second geographical locations. A distance L traveled by the train between the first and second geographical locations is determined and a sum C of electrical pulses generated by an encoder coupled to the train wheel during travel of the train the distance L is determined. Based on the distance L and the sum C, a diameter or radius of the wheel is determined.

The apparatus for detecting at least one physical quantity of a ferromagnetic product (5) comprises an iron core (2, 2′, 2″, 2′″) having an annular shape open at a respective discontinuity or air gap, a detection zone (3, 3′, 3″, 3′″) being defined by the aforementioned air gap, and at least one electrical winding (4, 40), wound around at least a portion of said core (2, 2′, 2″, 2′″).

A method for determining the position of a radial acceleration sensor of a wheel of a motor vehicle, including: acquiring, by the sensor, signals S.sub.i which are acquired during a predetermined time window W.sub.i when the vehicle is in motion, the windows W.sub.i being different from one another; detecting, for each time window W.sub.i, local extrema of the signal S.sub.i; determining, for each time window W.sub.i, a frequency F.sub.i of the rotation of the wheel of the vehicle as a function of the phase values and of the detection instants for the local extrema detected; filtering of the signals S.sub.i, so as to obtain, for each time window W.sub.i, a filtered value Z.sub.i; and determining the radial distance R.sub.c between the radial acceleration sensor and the axis of rotation of the wheel.

The disclosed apparatus, systems and methods relate to a physical stalk sensing system comprising at least one resilient member. Sensors having the resilient member or members are able to estimate the size of the stalks of row crops as they pass through a field, such as a corn field. The sensors can be mounted on a corn head and the results can be analyzed and visualized. A system for predicting crop yields in real-time or near real-time. A system for adjusting a stripper plate gap.

A method for estimating the external radius R.sub.e of a tire fitted to a wheel of a motor vehicle, the wheel including a radial acceleration sensor. The method includes: acquiring, by the sensor, a signal S when the vehicle is in motion under non-steady-state conditions, detecting local extrema of the signal S which are respectively associated with phase values and with detection instants, determining a variation in frequency F′ of rotation of the wheel as a function of said phase values and of said detection instants, determining, for at least one detection instant, a discrepancy between the local extremum associated with said detection instant and a reference signal obtained by eliminating the fluctuations in the signal S, determining a value for the longitudinal acceleration V.sub.al of the vehicle as a function of the at least one discrepancy, estimating the external radius R.sub.e as a function of V.sub.al and F′.

A method for determining the position of a radial acceleration sensor of a wheel of a motor vehicle, including: acquiring, by the sensor, signals S.sub.i which are acquired during a predetermined time window W.sub.i when the vehicle is in motion, the windows W.sub.i being different from one another; detecting, for each time window W.sub.i, local extrema of the signal S.sub.i; determining, for each time window W.sub.i, a frequency F.sub.i of the rotation of the wheel of the vehicle as a function of the phase values and of the detection instants for the local extrema detected; filtering of the signals S.sub.i, so as to obtain, for each time window W.sub.i, a filtered value Z.sub.i; and determining the radial distance R.sub.c between the radial acceleration sensor and the axis of rotation of the wheel.

A wear monitoring device for rolling elements in a machine element has at least one magnet generating a measuring magnetic field, and a magnetic field sensor arrangement for measuring a flux density of the measuring magnetic field. The sensor arrangement has at least one first magnetic field sensor for measuring the flux density at a first measuring position and a second magnetic field sensor for measuring the flux density at a second measuring position at a distance from the first measuring position. The measuring positions are selected such that rolling elements passing the measuring positions are in close contact with one another and a resulting change in the measuring magnetic field is detectable at a measuring position by the respective magnetic field sensor. An evaluation unit records and evaluates the flux densities measured by the magnetic field sensors, to determine diameters and/or changes in the diameters of the rolling elements.

A method for estimating the external radius R.sub.e of a tire fitted to a wheel of a motor vehicle, the wheel including a radial acceleration sensor. The method includes: acquiring, by the sensor, a signal S when the vehicle is in motion under non-steady-state conditions, detecting local extrema of the signal S which are respectively associated with phase values and with detection instants, determining a variation in frequency F′ of rotation of the wheel as a function of said phase values and of said detection instants, determining, for at least one detection instant, a discrepancy between the local extremum associated with said detection instant and a reference signal obtained by eliminating the fluctuations in the signal S, determining a value for the longitudinal acceleration V.sub.al of the vehicle as a function of the at least one discrepancy, estimating the external radius R.sub.e as a function of V.sub.al and F′.