摘要:
A yaw rate sensor (10) includes a movable mass structure (12) and a drive component (13) which is suitable for setting the movable mass structure (12) in motion (14), and an analysis component (15) which is suitable for detecting a response (40) of the movable mass structure (12) to a yaw rate (Ω). A method for functional testing of a yaw rate sensor (10) includes the following steps: driving a movable mass structure (12), feeding a test signal (42) into a quadrature control loop (44) at a feed point (48) of the quadrature control loop (44), feeding back a deflection (40) of the movable mass structure (12), detecting a measure of the feedback of the movable mass structure (12), and reading out the response signal (47) from the quadrature control loop (44). In the yaw rate sensor (10) and also in the method, the readout of the response signal (47) in relation to a processing direction (45) of the test signal (42) is provided between a feed point (48) for a test signal (42) and an actuator (38) for feeding back a deflection (40) of the movable mass structure (12).
摘要:
A yaw-rate sensor having a substrate and a plurality of movable substructures that are mounted over a surface of the substrate, the movable substructures being coupled to a shared, in particular, central spring element, means being provided for exciting the movable substructures into a coupled oscillation in a plane that extends parallel to the surface of the substrate, the movable substructures having Coriolis elements, means being provided for detecting deflections of the Coriolis elements induced by a Coriolis force, a first Coriolis element being provided for detecting a yaw rate about a first axis, a second Coriolis element being provided for detecting a yaw rate about a second axis, the second axis being oriented perpendicularly to the first axis.
摘要:
A yaw rate sensor (10) includes a movable mass structure (12) and a drive component (13) which is suitable for setting the movable mass structure (12) in motion (14), and an analysis component (15) which is suitable for detecting a response (40) of the movable mass structure (12) to a yaw rate (Ω). A method for functional testing of a yaw rate sensor (10) includes the following steps: driving a movable mass structure (12), feeding a test signal (42) into a quadrature control loop (44) at a feed point (48) of the quadrature control loop (44), feeding back a deflection (40) of the movable mass structure (12), detecting a measure of the feedback of the movable mass structure (12), and reading out the response signal (47) from the quadrature control loop (44). In the yaw rate sensor (10) and also in the method, the readout of the response signal (47) in relation to a processing direction (45) of the test signal (42) is provided between a feed point (48) for a test signal (42) and an actuator (38) for feeding back a deflection (40) of the movable mass structure (12).
摘要:
A rotational rate sensor having a substrate and a Coriolis element is proposed, the Coriolis element being situated over a surface of a substrate; a driving arrangement being provided, by which the Coriolis element is induced to vibrations parallel to a first axis; a detection arrangement being provided, by which an excursion of the Coriolis elements is detectable on the basis of a Coriolis force in a second axis that is provided to be essentially perpendicular to the first axis; the first and second axis being parallel to the surface of the substrate; sensor elements that are designated to be at least partially movable with respect to the substrate being provided; a force-conveying arrangement being provided; the force-conveying arrangement being provided to convey a static force effect between the substrate and at least one of the sensor elements.
摘要:
A yaw-rate sensor including a first and a second Coriolis element that are arranged side-by-side above a surface of a substrate. The Coriolis elements are induced to oscillate parallel to a first axis Y. Due to a Coriolis force, the Coriolis elements are deflected in a second axis X which is perpendicular to the first axis Y. The oscillations of the first and second Coriolis elements occur in phase opposition to each other on paths which, without the effect of a Coriolis force, are two straight lines parallel to each other.
摘要:
A yaw-rate sensor having a substrate and a plurality of movable substructures that are mounted over a surface of the substrate, the movable substructures being coupled to a shared, in particular, central spring element, where the movable substructures are excitable into a coupled oscillation in a plane that extends parallel to the surface of the substrate, the movable substructures having Coriolis elements, where deflections of the Coriolis elements induced by a Coriolis force are detectable, a first Coriolis element being provided for detecting a yaw rate about a first axis, a second Coriolis element being provided for detecting a yaw rate about a second axis, the second axis being oriented perpendicularly to the first axis.
摘要:
A delta sigma modulator includes an oscillatory system having a natural frequency and an electronics and a control loop which acts upon the electronics from the oscillatory system and again upon the oscillatory system from the electronics. The control loop provides that a gain in the control loop demonstrates a peaking in a frequency range around the natural frequency of the oscillatory system.
摘要:
A device for controlling a device by using a rotation-rate sensor. In order to provide a device for determining a triggering signal for a safety device which allows a particularly compact implementation of the device, the device is set up to ascertain an acceleration variable on the basis of a first sensor signal for a first seismic mass of the rotation-rate sensor and the second sensor signal for a second seismic mass of the rotation-rate sensor and to control the device as a function of the acceleration variable.
摘要:
A micromechanical motion sensor is capable of detecting a deflection imparted to an oscillatably mounted bar spring element excited to a permanent periodic oscillation by an electrostatic oscillating drive to which a periodic drive voltage is applied. To compensate non-linearities of the resonance frequency response of the bar spring element, a sum of a normal drive voltage signal and a compensation drive signal may be applied to a comb drive. In an alternative embodiment, separate compensation comb drive units may be additionally provided to the comb drive units used for the oscillation drive and a compensation voltage signal may be applied to them to compensate for the non-linearity.
摘要:
An exemplary embodiment of the present invention creates a micromechanical rotational rate sensor having a first Coriolis mass element and a second Coriolis mass element which may be situated over a surface of a substrate. An exemplary embodiment of a micromechanical rotational rate sensor may have an activating device by which the first Coriolis mass element and the second Coriolis mass element are able to have vibrations activated along a first axis. An exemplary embodiment of a micromechanical rotational rate sensor may have a detection device by which deflections of the first Coriolis mass elements and of the second Coriolis element are able to be detected along a second axis, which is perpendicular to the first axis, on the basis of a correspondingly acting Coriolis force. The first axis and second axis may run parallel to the surface of the substrate. The detecting device may have a first detection mass device and a second detection mass device. The centers of gravity of the first Coriolis mass element, the second Coriolis mass element, the first detection mass device and the second detection mass device may coincide at a common mass center of gravity when they are at rest.