Features of designing a highly sensitive auto-compensating angular accelerometer using optocoupler-lightguide elements

Background. The object of the research is an auto-compensating angular accelerometer for angular stabilization systems, high-precision navigation and guidance. The subject of the research is the method of designing an auto-compensating angular accelerometer on a torsion suspension with an optocoupler of the angular position of the sensitive element. The purpose of the work is to calculate the most critical components of a high-precision angular accelerometer of an auto-compensation type, the design of which is presented in the description of the invention to the copyright certificate No. 851136 “Converter of mechanical quantities”, satisfying technical requirements for aviation and space instrumentation. Materials and methods. The calculation of the most critical nodes of a high-precision angular accelerometer of an auto-compensation type was performed using numerical methods for solving nonlinear equations, differential and integral calculus, and mathematical modeling. Results. A technique has been developed for designing the most critical components of an auto-compensating angular accelerometer designed for systems of angular stabilization, high-precision navigation and guidance. The calculations of the mechanical oscillatory system, optocoupler sensor of the angular position of the sensitive element, magnetic circuit and feedback coil of the angular accelerometer are performed. An analysis of the nonlinear system’s stability with its division into phases of slow and fast motion (self-oscillating mode) is carried out, and its main characteristics are determined. Conclusions. The performed calculations showed the possibility of constructing the proposed design scheme of a high-precision angular acceleration meter that meets the requirements formulated for aviation sensors for automated control and registration of motion parameters in terms of its main technical characteristics and simplifying its design compared to currently used analogues.