Abstract: A method for operating a vibrating gyroscope, wherein the vibrating gyroscope is used as a resonator and forms part of at least one control circuit that excites the vibration gyroscope by feeding an excitation signal with its natural frequency. An output signal can be tapped from the vibrating gyroscope from which the excitation signal is deriveable by filtering and amplification. Upon switching on a sensor arrangement that includes such a vibrating gyroscope, the frequency of the excitation signal is adjusted by exciting the vibrating gyroscope, before the excitation signal is fed, to oscillate freely, measuring the frequency of the free oscillation and feeding the excitation signal to the vibrating gyroscope with the measured frequency.

Abstract: A method and system for monitoring a sensor arrangement comprising a vibrating gyroscope, wherein the vibrating gyroscope is used as a resonator and forms part of at least one control circuit that excites the vibration gyroscope by feeding an excitation signal with its natural frequency. An output signal is tapable from the vibrating gyroscope from which the excitation signal is derivable by filtering and amplification.

Abstract: A method for operating a vibrating gyroscope and to a sensor arrangement comprising such a vibrating gyroscope, wherein the vibrating gyroscope is used as a resonator and is part of at least one control circuit that excites the vibration gyroscope by feeding an excitation signal with its natural frequency. An output signal can be tapped from the vibrating gyroscope from which the excitation signal can be derived by filtering and amplification. In accordance with the invention, once a sensor arrangement comprising the vibrating gyroscope is switched on, an initial value for the natural frequency is calculated from a previously measured value of the natural frequency stored in a memory and parameters that effect a modification of the natural frequency since start of the measurement, and the excitation signal is fed to the vibrating gyroscope with the calculated initial value of the frequency.

Abstract: The invention relates to a method and a system for monitoring a sensor arrangement comprising a vibrating gyroscope. Said vibrating gyroscope is used as a resonator and is part of at least one control circuit that excites the vibration gyroscope by feeding an excitation signal with its natural frequency. An output signal can be tapped from the vibrating gyroscope from which the excitation signal can be derived by filtering and amplification. The invention is characterized in that a first value of temperature change is calculated from the difference of the actual value of the natural frequency and a value of the natural frequency measured at a reference temperature during a comparison and stored in a memory, and the temperature coefficient of the natural frequency in relation to the measured temperature.

Abstract: The invention relates to a method for determining a rate of rotation, in which, as a function of a primary actuating signal (E_PRIM), a sensor element (2), the natural frequency (FE) of which is linearly dependent on its temperature (T), is excited so as to perform a primary oscillation along a first axis (AXIS—1). A primary measurement signal (A_PRIM), which is representative of the primary oscillation, is determined. Also, a secondary measurement signal (A_SEC) is determined which is representative of a secondary oscillation of the sensor element (2) along a second axis (AXIS—2), which together with the first axis (AXIS—1) encloses an angle that is unequal to zero. The natural frequency (FE) of the sensor element (2) is determined. On the basis of the determined natural frequency (FE) only, at least one value is adjusted which affects the primary actuating signal (E_PRIM) and/or at least one other actuating signal.

Abstract: The invention relates to a method for operating a vibrating gyroscope and to a sensor arrangement comprising such a vibrating gyroscope. Said vibrating gyroscope is used as a resonator and is part of at least one control circuit that excites the vibration gyroscope by feeding an excitation signal with its natural frequency. An output signal can be tapped from the vibrating gyroscope from which the excitation signal can be derived by filtering and amplification. The invention is characterized in that, once a sensor arrangement comprising the vibrating gyroscope is switched on, an initial value for the natural frequency is calculated from a previously measured value of the natural frequency stored in a memory and parameters that effect a modification of the natural frequency since start of the measurement, and the excitation signal is fed to the vibrating gyroscope with the calculated initial value of the frequency.

Abstract: A method for monitoring a rotation rate sensor comprising a vibration gyroscope that represents a band-pass filter and that is part of at least one control circuit, wherein the control circuit comprises a digital and analog components and excites the vibration gyroscope to vibrate with its natural frequency by supplying it with an excitation signal. An output signal can be gathered from the vibration gyroscope from which the excitation signal and the rotation rate signal can be derived by filtering and amplification. Redundant analog components and at least one analog to digital converter are used to measure analog signals and read characteristic values within the digital components and compare the measured characteristic values with limiting values.

Abstract: The invention relates to a method for operating a vibrating gyroscope and to a sensor arrangement comprising such a vibrating gyroscope. Said vibrating gyroscope is used as a resonator and is part of at least one control circuit that excites the vibration gyroscope by feeding an excitation signal with its natural frequency. An output signal can be tapped from the vibrating gyroscope from which the excitation signal can be derived by filtering and amplification. The invention is characterized in that, once the sensor arrangement is switched on, the frequency of the excitation signal is adjusted by exciting the vibrating gyroscope, before the excitation signal is fed, to oscillate freely, measuring the frequency of the free oscillation and feeding the excitation signal to the vibrating gyroscope with the measured frequency.

Abstract: The invention relates to a method for monitoring a vibrating gyroscope which represents a resonator and forms part of at least one control loop that excites the vibrating gyroscope with its natural frequency by supplying an excitation signal. An output signal can be extracted from the vibrating gyroscope, the excitation signal being derived from said output signal by means of filtering and amplifying. According to the invention, the quality of the resonator is measured. If the measured quality is below a threshold value, an error message is generated.

Abstract: The invention relates to an angular rate sensor having a vibration gyroscope, in which circuits are provided for operating the vibration gyroscope and for deriving an angular rate signal. The circuits access modifiable data, whereby this data is stored in a writable non-volatile memory. The data from the non-volatile memory is read after the angular rate sensor is switched on.

Abstract: The invention relates to a method for aligning a rotation rate sensor with a vibration gyroscope, the first input and the first output of which is part of a primary control circuit. Said control circuit excites the vibration gyroscope to vibrate at its natural frequency by supplying it with an excitation signal. The second input and the second output of the vibration gyroscope is part of a secondary control circuit. An output signal can be gathered from the second output and said signal is demodulated after amplification and analog to digital conversion to give an in-phase component and a quadrature component. After filtering, these components are modulated and composed to give a driver signal that is supplied to the second input and a rotation rate signal is derived from the in-phase component.

Abstract: The invention relates to a method for monitoring a rotation rate sensor comprising a vibration gyroscope that represents a band-pass filter and that is part of at least one control circuit. Said control circuit is comprised of digital and analog components and excites the vibration gyroscope to vibrate with its natural frequency by supplying it with an excitation signal. An output signal can be gathered from the vibration gyroscope from which the excitation signal and the rotation rate signal can be derived by filtering and amplification. The inventive method is characterized in that redundant analog components and at least one analog to digital converter is used to measure analog signals and read characteristic values within the digital components and compare them with limiting values.

Abstract: In a method for monitoring a rotation rate sensor with a vibrational gyroscope which has a first input and a first output which form part of a primary control loop which excites the vibrational gyroscope by supplying an excitation signal to the first input at its natural frequency, where the vibrational gyroscope also has a second input and a second output which form part of a secondary control loop, where an output signal can be taken from the second output, said output signal being amplified and subjected to analog/digital conversion and then demodulated into an inphase component and a quadrature component. The components are filtered and are then modulated again and compiled to form a driver signal which is supplied to the second input. A rotation rate signal is derived from the inphase component, the inphase component and the quadrature component have a test signal added to them whose frequency brings about sidebands which are situated in the driver signal outside of the second control loop's passband.

Abstract: In a rotation rate sensor having a vibrational gyroscope which is part of at least one control loop which excites the vibrational gyroscope by supplying an excitation signal at its natural frequency, the vibrational gyroscope provides an output signal from which a noisy rotation rate signal is derived. The noisy rotation rate signal is supplied to inputs on a low pass filter with controllable bandwidth and on a bandpass filter. The output of the bandpass filter is connected to a control input on the low pass filter via a threshold value circuit.

Abstract: The invention relates to an angular rate sensor having a vibration gyroscope, in which circuits are provided for operating the vibration gyroscope and for deriving an angular rate signal. Said circuits access modifiable data, whereby this data is stored in a writable non-volatile memory. Means are provided for reading out the data from the non-volatile memory after the angular rate sensor is switched on.

Abstract: The invention relates to a method for aligning a rotation rate sensor with a vibration gyroscope, the first input and the first output of which is part of a primary control circuit. Said control circuit excites the vibration gyroscope to vibrate at its natural frequency by supplying it with an excitation signal. The second input and the second output of the vibration gyroscope is part of a secondary control circuit. An output signal can be gathered from the second output and said signal is demodulated after amplification and analog to digital conversion to give an in-phase component and a quadrature component. After filtering, these components are modulated and composed to give a driver signal that is supplied to the second input and a rotation rate signal is derived from the in-phase component.

Abstract: The invention relates to a method for monitoring a vibrating gyroscope which represents a resonator and forms part of at least one control loop that excites the vibrating gyroscope with its natural frequency by supplying an excitation signal. An output signal can be extracted from the vibrating gyroscope, the excitation signal being derived from said output signal by means of filtering and amplifying. According to the invention, the quality of the resonator is measured. If the measured quality is below a threshold value, an error message is generated.

Abstract: The invention relates to a rotational speed sensor including a vibrating gyroscope which is part of a primary and a secondary control circuit. The control circuit, respectively, amplifies, demodulates, remodulates an output signal of the vibrating control circuit and supplies it again to the vibrating control circuit as an exciter signal and the primary control circuit provides most of the energy required for maintaining the vibration. A frequency synthesiser including mechanism for adjusting the phase length of the carrier is provided in order to produce carriers which are used to demodulate and remodulate. Said carrier forms, a phase control circuit in conjunction with a phase comparison circuit. The amplified output signal in the primary control circuit and a comparison carrier produced by the frequency synthesiser can be guided to the phase comparison circuit. The invention also relates to a method for equalising the inventive rotational speed sensor.

Abstract: In a rotation rate sensor having a vibrational gyroscope which is part of at least one control loop which excites the vibrational gyroscope by supplying an excitation signal at its natural frequency, the vibrational gyroscope providing an output signal from which a noisy rotation rate signal is derived, the noisy rotation rate signal is supplied to inputs on a low pass filter with controllable bandwidth and on a bandpass filter. The output of the bandpass filter is connected to a control input on the low pass filter via a threshold value circuit.

Abstract: In a method for monitoring a rotation rate sensor with a vibrational gyroscope which has a first input and a first output which form part of a primary control loop which excites the vibrational gyroscope by supplying an excitation signal to the first input at its natural frequency, where the vibrational gyroscope also has a second input and a second output which form part of a secondary control loop, where an output signal can be taken from the second output, said output signal being amplified and subjected to analog/digital conversion and then demodulated into an inphase component and a quadrature component, where the components are filtered and are then modulated again and compiled to form a driver signal which is supplied to the second input, and where a rotation rate signal is derived from the inphase component, the inphase component and the quadrature component have a test signal added to them whose frequency brings about sidebands which are situated in the driver signal outside of the second control loo