A yaw-rate sensor is a gyroscopic device that measures a vehicle's yaw rate, its angular velocity around its vertical axis. The angle between the vehicle's heading and velocity is called its slip angle, which is related to the yaw rate.
In the piezoelectric type, the sensor is a "tuning fork"-shaped structure with four piezoelectric elements, two on top and two below. When the slip angle is zero (i.e., no slip), the upper elements produce no voltage as no Coriolis force acts on them. But when cornering, the rotational movement causes the upper part of the tuning fork to leave the oscillatory plane, creating an alternating voltage (and thus an alternating current) proportional to the yaw rate and oscillatory speed. The output signal's sign depends on the direction of rotation.
In the micromechanical type, the Coriolis acceleration is measured by a micromechanical capacitive acceleration sensor placed on an oscillating element. This acceleration is proportional to the product of the yaw rate and oscillatory velocity, the latter of which is maintained electronically at a constant value.
rate, sensor, this, article, does, cite, sources, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, scholar, jstor, march, 2008, learn, when, remove, th. This article does not cite any sources Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Yaw rate sensor news newspapers books scholar JSTOR March 2008 Learn how and when to remove this template message A yaw rate sensor is a gyroscopic device that measures a vehicle s yaw rate its angular velocity around its vertical axis The angle between the vehicle s heading and velocity is called its slip angle which is related to the yaw rate Types EditThere are two types of yaw rate sensors the piezoelectric type and the micromechanical type In the piezoelectric type the sensor is a tuning fork shaped structure with four piezoelectric elements two on top and two below When the slip angle is zero i e no slip the upper elements produce no voltage as no Coriolis force acts on them But when cornering the rotational movement causes the upper part of the tuning fork to leave the oscillatory plane creating an alternating voltage and thus an alternating current proportional to the yaw rate and oscillatory speed The output signal s sign depends on the direction of rotation In the micromechanical type the Coriolis acceleration is measured by a micromechanical capacitive acceleration sensor placed on an oscillating element This acceleration is proportional to the product of the yaw rate and oscillatory velocity the latter of which is maintained electronically at a constant value Applications EditYaw rate sensors are used in aircraft and electronic stability control systems in cars See also EditAttitude dynamics and control Ship motions Aircraft principal axes This classical mechanics related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Yaw rate sensor amp oldid 1024830894, wikipedia, wiki, book, books, library,
