A method for inertial sensor error modeling and compensation comprises obtaining multiple bias drift datasets for an elapsed time period for one or more gyroscopes; generating a 3D bias drift data plot using the multiple bias drift datasets; generating a partial bias drift data image based on the 3D bias drift data plot; and inputting the partial bias drift data image into a machine learning algorithm to predict how bias drift evolves over time for the gyroscopes. The machine learning algorithm uses the partial bias drift data image, the elapsed time period, and temperature history to compute a predicted bias over temperature with respect to time, to thereby predict bias drift data for a future time period for the gyroscopes. The machine learning algorithm outputs a completed bias drift image that represents drift data from the elapsed time period and the predicted bias drift data for the future time period.

An inertial measurement device includes: a board; a first inertial sensor disposed on one surface of the board and having a first detection axis along the board; a second inertial sensor disposed on the one surface of the board and having a second detection axis defined in a direction opposite to the first detection axis; and a processing circuit configured to generate a differential signal between an output signal of the first inertial sensor and an output signal of the second inertial sensor.

The accelerometric sensor has a suspended region, mobile with respect to a supporting structure, and a sensing assembly coupled to the suspended region and configured to detect a movement of the suspended region with respect to the supporting structure. The suspended region has a geometry variable between at least two configurations associated with respective centroids, different from each other. The suspended region is formed by a first region rotatably anchored to the supporting structure and by a second region coupled to the first region through elastic connection elements configured to allow a relative movement of the second region with respect to the first region. A driving assembly is coupled to the second region so as to control the relative movement of the latter with respect to the first region.

An inertial measurement unit includes a sensor and a heat preservation system. The heat preservation system includes a heat preservation body and a heat source. The sensor is positioned on the heat preservation body. The heat source is configured to generate heat. The heat preservation body is configured to transfer the heat from the heat source to the sensor to maintain a preset temperature in a space surrounding the sensor.

A wheel speed sensor for a utility vehicle, including: an active pulse sensor, a housing to at least partially enclose the active pulse sensor, and a protective cap to at least partially cover the housing; in which the wheel speed sensor has at least one component to adapt a temperature resistance capability of the wheel speed sensors so that the wheel speed sensor is usable in a high temperature environment.

A sensor component. The sensor component includes a microelectromechanical z inertial sensor, including two sensor elements situated on a substrate and each designed in the form of a z rocker. The sensor elements each includes a seismic mass structure, elastically deflectable with respect to the substrate with the aid of a torsion spring, which has a heavy side and an oppositely situated light side with regard to the torsion springs. The seismic mass structure of the two sensor elements have different perforations on its heavy and/or light side(s), which effectuate a different sensitivity of the two sensor elements to a temperature gradient running in the z direction. The sensor component also includes an evaluation circuit designed to ascertain an acceleration in the z direction by evaluating the deflection of the seismic mass structure of the two sensor elements.

Reducing a sensitivity of an electromechanical sensor is presented herein. The electromechanical sensor comprises a sensitivity with respect to a variation of a mechanical-to-electrical gain of a sense element of the electromechanical sensor; and a voltage-to-voltage converter component that minimizes the sensitivity by coupling, via a defined feedback capacitance, a positive feedback voltage to a sense electrode of the sense element—the sense element electrically coupled to an input of the voltage-to-voltage converter component. In one example, the voltage-to-voltage converter component minimizes the sensitivity by maintaining, via the defined feedback capacitance, a constant charge at the sense electrode. In another example, the electromechanical sensor comprises a capacitive sense element comprising a first node comprising the sense electrode. Further, a bias voltage component can apply a bias voltage to a second node of the electromechanical sensor. In yet another example, the electromechanical sensor comprises a piezoelectric sense element.

A detecting device for detecting a rotation speed of the color wheel includes: a first processing unit, used to compare an external ambient temperature with a preset temperature, and outputs a logic level when the external ambient temperature is greater than the preset temperature; and a light-emitting unit, including a light-emitting body for emitting measurement light, a temperature compensation circuit, wherein the temperature compensation circuit adjusts, according to the logic level and the external ambient temperature, the resistance of a circuit in which the light-emitting body is located, causing a driving current of the light-emitting body to be within a preset current range, a reflection unit disposed on a moving color wheel and used to reflect measurement light, and a measurement and control unit used to receive the measurement light emitted periodically by the reflection unit, and to calculate the number of times that the measurement light enters.

A method for compensating for gyroscope drift on an electronic device includes receiving by a data processing unit, measurement data from a gyroscope. The method includes computing, by the data processing unit, a compensation parameter by analyzing the measurement data received from the gyroscope with respect to variations in temperature of the gyroscope. The method includes compensating, by the data processing unit, the measurement data by correcting the measurement data with the computed compensation parameter. The compensation parameter is continuously validated to correct the measurement data with the compensation parameter. Further, the received measurement data is updated continuously based on the computed compensation parameter, independent of the gyroscope on the electronic device, thereby facilitating adaptive drift compensation.

The disclosure describes a magnetic circuit assembly that includes a magnet assembly and an excitation ring. The magnet assembly defines a central axis and includes a pole piece and a magnet underlying the pole piece. The excitation ring includes a base and an outer ring positioned around the magnet assembly. The base includes a platform layer underlying the magnet, an upper base layer underlying the platform layer, and a lower base layer underlying the upper base layer. The outer ring overlies the upper base layer and is configured to couple to an outer radial portion of a proof mass assembly. The platform layer and lower base layer are made from high coefficient of thermal expansion (CTE) materials, while the upper base layer and outer ring are made from low CTE materials. Each relatively high CTE material has a higher CTE than each relatively low CTE material.