Abstract:
A yaw-rate sensor and a method for operating a yaw-rate sensor having a first Coriolis element and a second Coriolis element are proposed, the yaw-rate sensor having a substrate having a main plane of extension, the yaw-rate sensor having a first drive element for driving the first Coriolis element in parallel to a second axis, the yaw-rate sensor having a second drive element for driving the second Coriolis element in parallel to the second axis, the yaw-rate sensor having detection means for detecting deflections of the first Coriolis element and of the second Coriolis element in parallel to a first axis due to a Coriolis force, the second axis being situated perpendicularly to the first axis, the first and second axis being situated in parallel to the main plane of extension, the first and second drive elements being mechanically coupled to each other via a drive coupling element.
Abstract:
The disclosure relates to a micromechanical rotary acceleration sensor including a substrate with at least one anchoring device and at least two flywheel masses. At least one of the flywheel masses is connected to at least one anchoring device by means of a coupling element. The at least one anchoring device is designed in such a manner that the at least two flywheel masses are elastically deflectable from a respective rest position about at least one axis of rotation. The at least two flywheel masses is designed in such a manner that they have different natural frequencies.
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, 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.
Abstract:
The disclosure relates to a micromechanical rotary acceleration sensor including a substrate with at least one anchoring device and at least two flywheel masses. At least one of the flywheel masses is connected to at least one anchoring device by means of a coupling element. The at least one anchoring device is designed in such a manner that the at least two flywheel masses are elastically deflectable from a respective rest position about at least one axis of rotation. The at least two flywheel masses is designed in such a manner that they have different natural frequencies.
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 yaw rate sensor includes: at least one Coriolis element; a drive device connected to the Coriolis element and configured to drive a vibration of the Coriolis element; a detection device having at least one rotor; and a coupling device connected to the detection device and to the Coriolis element. The coupling device is configured to couple a deflection in the plane of vibration of the Coriolis element to the detection device in a direction orthogonal to the vibration, so that when the Coriolis element is deflected a torque for driving the at least one rotor is transmitted from the Coriolis element to the at least one rotor.
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 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 capacitive pressure sensor made up of two silicon on insulator (SOI) wafers lying opposite of each other and joined to each other in a vacuum-tight manner, a recess being formed between the two wafers. The first wafer exclusively supports the evaluation circuits required for measuring the applied pressure and a capacitive electrode, and the second wafer has a recess formed by surface micromechanics processes, in which the counter electrode to the capacitive electrode of the first wafer is situated. The second wafer at the same time forms a cover for the first wafer.