Investigation of Characteristics of the Optoelectronic Ring Wave Angular Velocity Transducer

The article presents a research of the characteristics of the optoelectronic ring angular velocity transducer based on the optical tunneling effect. Nowadays MEMS gyroscopes are used in the aircraft control and navigation systems. A big number of MEMS angular velocity transducers, based on the properties of a vibrating element, are already available. There are several ways to evaluate sensitivity of these angular velocity transducers, including capacitive, electrostatic and piezoresistive means. The main disadvantage of these angular velocity transducers is nonlinear sensitivity. In this article those problems are solved by the research of the optoelectronic ring angular velocity transducer with the optical tunneling readout schematics, which ensures a measurement range of several hundred degrees per second. The response amplitude of a ring resonator depends on various factors, such as the diameter, type of material, radial thickness, and axial length. Reflectivity of the angular velocity transducer is changed by the initial gap, amplitude of the vibrating ring resonator and incident beam angle. The output signal is obtained by varying the amplitude of the secondary radial displacement by means of the optical tunneling. With application of a few hundred degrees per second of the angular velocity, the output sensitivity of the desired angular velocity transducer is more linear than with the use of the capacitive means. So, the desired optoelectronic ring angular velocity transducer can be used in the navigation, moving object control and trajectory tracking systems.

кольцевой волновой резонатор, оптоэлектронный преобразователь, угловая скорость, оптическое туннелирование, пьезоактюатор, функция преобразования, зазор, радиальное движение, ring wave resonator, optoelectronic transducer, angular velocity, optical tunneling, piezoactuator, transfer function, gap, radial displacement, sensitivity, linearity

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