Method of parametric optimization of each component of adaptive compensatng inertial sensors operating in a self-oscilation mode

The paper deals with a crucial task of parametric optimization of an adaptive inertial sensor capable of varying the parameters in order to reduce errors which are caused by the influence of high-frequency transient disturbances. A method of parametric optimization of each component that makes it possible to vary the parameters of the nonlinear element of a compensating inertial sensor operating in the self-oscillation mode is developed. The method was tested with a pendulous accelerometer taken as an example. Numerical investigations confirmed the possibility of filtering external vibrations and internal noise of the inertial sensor while maintaining its sensitivity in the required measuring range due to the synthesis of the adaptive loop based on a non-linear element of the "hysteresis loop" type. The essence of the method is based on parametric synthesis of the adaptive loop with a nonlinear element. Numerical investigations show that the error of the pendulous accelerometer can be reduced, on the average, by an order of magnitude thanks to the adaptive parameter setting of the non-linear element, depending on the amplitude of the external vibrations. The above method of parametric optimization of each component can be applied to most compensating inertial sensors measuring motion parameters of spacecraft operating in conditions of non-stationary external and internal disturbances. The adaptation circuit in adaptive inertial sensors can be implemented through the use of modern microcontrollers.