Abstract:
A micromechanical yaw-rate sensor comprising a first yaw-rate sensor element, which outputs a first sensor signal, which contains information about a rotation around a first rotational axis, a second yaw-rate sensor element, which outputs a second sensor signal, which contains information about a rotation around a second rotational axis, which is perpendicular to the first rotational axis, a drive, which drives the first yaw-rate sensor element, and a coupling link, which mechanically couples the first yaw-rate sensor element and the second yaw-rate sensor element to one another, so that driving of the first yaw-rate sensor element also causes driving of the second yaw-rate sensor element.
Abstract:
A method for adjusting an acceleration sensor which includes a substrate and a seismic mass, the acceleration sensor having first and further first electrodes attached to the substrate on a first side, counter-electrodes of the seismic mass being situated between the first and further first electrodes, the acceleration sensor having further second electrodes on a second side and further fourth electrodes on a fourth side opposite the second side, an essentially equal first excitation voltage being applied to the first and further first electrodes in a first step for exciting a first deflection of the seismic mass along a first direction, the first deflection being compensated in a second step by applying a first compensation voltage to the further second and further fourth electrodes.
Abstract:
A yaw rate sensor having a substrate which has a main plane of extension, and a Coriolis element is proposed. The Coriolis element is excitable to a vibration along a third direction which is perpendicular to the main plane of extension. A Coriolis deflection of the Coriolis element along a first direction which is parallel to the main plane of extension may be detected using a detection arrangement. The detection arrangement includes a Coriolis electrode which is connected to the Coriolis element, and a corresponding counterelectrode. Both the Coriolis electrode and the counterelectrode may be excited to a vibration along the third direction.
Abstract:
A method and a micromechanical component which counteract manufacturing-process-related mechanical stresses in the membrane are provided. The membrane is formed on a substrate in a layer system and spans a cavity in the substrate. The layer system includes at least one base layer formed on the substrate for circuit elements. At least one structured masking layer is also formed on the base layer for defining the circuit elements. The masking layer is structured in the area of the membrane in such a way that mechanical stresses acting in the area of the membrane under vacuum are at least partially compensated, the intrinsic stress of the masking layer being taken into account in the layout of the structuring.
Abstract:
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.
Abstract:
A rotational rate sensor includes: a substrate having a main plane of extension; a first Coriolis element; and a second Coriolis element. The first Coriolis element and the second Coriolis element have a first and a second center of gravity, respectively, and the elements are drivable along a drive direction. In the idle state of the rotational rate sensor, (i) the distance between the first center of gravity and the second center of gravity along the detection direction is less than a first value, and (ii) the distance between the first center of gravity and the second center of gravity along the third direction is less than a second value.
Abstract:
A yaw rate sensor having a substrate, a first Coriolis element and a second Coriolis element is described, the first Coriolis element being excitable to a first vibration by first excitation means, and the second Coriolis element being excitable to a second vibration by second excitation means, and the first and second Coriolis elements being connected to one another by a spring structure, and the spring structure also including at least one rocker structure, the rocker structure being anchored on the substrate by at least one spring element.
Abstract:
A micromechanical yaw-rate sensor comprising a first yaw-rate sensor element, which outputs a first sensor signal, which contains information about a rotation around a first rotational axis, a second yaw-rate sensor element, which outputs a second sensor signal, which contains information about a rotation around a second rotational axis, which is perpendicular to the first rotational axis, a drive, which drives the first yaw-rate sensor element, and a coupling link, which mechanically couples the first yaw-rate sensor element and the second yaw-rate sensor element to one another, so that driving of the first yaw-rate sensor element also causes driving of the second yaw-rate sensor element.
Abstract:
A micromechanical angular acceleration sensor for measuring an angular acceleration is disclosed. The sensor includes a substrate, a seismic mass, at least one suspension, which fixes the seismic mass to the substrate in a deflectable manner, and at least one piezoresistive and/or piezoelectric element for measuring the angular acceleration. The piezoresistive and/or piezoelectric element is arranged in a cutout of the seismic mass. A corresponding method and uses of the sensor are also disclosed.
Abstract:
A yaw rate sensor having a substrate, a first Coriolis element and a second Coriolis element is described, the first Coriolis element being excitable to a first vibration by first excitation means, and the second Coriolis element being excitable to a second vibration by second excitation means, and the first and second Coriolis elements being connected to one another by a spring structure, and the spring structure also including at least one rocker structure, the rocker structure being anchored on the substrate by at least one spring element.