G01P1/006

Inertial measurement unit
12474363 · 2025-11-18 · ·

An inertial measurement unit includes an angular velocity sensor and an acceleration sensor that output inertial information, a storage portion that stores a plurality of correction parameters related to a range of values of the inertial information, a parameter control portion that selects a selection correction parameter from the plurality of correction parameters, and a correction calculation portion that corrects the inertial information using the selection correction parameter.

Micro-electrical-mechanical-systems (MEMS) accelerometer systems

A Micro-Electrical-Mechanical-Systems (MEMS) accelerometer system includes a proof-mass device having a proof-mass that moves from an initial position in response to an input acceleration, a transducer connected to the proof-mass device to output a transducer signal correlating to movement and/or position of the proof-mass, and a driver configured to drive the proof-mass. A controller actively controls the driver to actively drive the proof-mass toward an initial position, and actively adjusts the drive signal based on a temperature signal (T) indicative of given temperature, a transducer voltage signal (Vref) indicative of a transducer voltage reference, and the transducer signal to actively generate a corrected drive signal and delivers the corrected drive signal to the driver to actively control the driver. The controller can also utilize a robust loop-shaping stabilization operation to produce both an unfiltered estimate of the input acceleration and an uncorrected drive signal to stabilize the proof mass.

METHOD FOR TEMPERATURE COMPENSATION OF A SENSOR MEASUREMENT VALUE OF A SENSOR

A method for temperature compensation of a sensor measurement value of a sensor in a vehicle's safety system during vehicle operation, wherein the sensor comprises predetermined temperature compensation data for a predetermined temperature compensation, which are stored in readable fashion in a memory unit of the sensor. The vehicle has an electronic control unit which performs an algorithm for improving the temperature compensation by way of a temperature compensation that is more extensive than the predetermined temperature compensation, and wherein the stored temperature compensation data are made available to the algorithm as a basis for the more extensive temperature compensation.