Vozniakovskyi A. Methods of improving the accuracy of measurement of accelerations of gyrostabilized platforms

The thesis is devoted to study of the pendulum accelerometer compensation type. The work was carried out research of destabilizing factors acting on the accelerometer when in the composition of the gyrostabilized platform. The results of the study developed a mathematical model of compensation of various errors. The aim of this work is that the accelerometers in the composition of the gyro-stabilized platforms installed in airplanes, ships, missiles, satellites and space vehicles, to improve the characteristics of stability and controllability of the object, and also as main sensors designed to measure the acceleration with which to move the center of mass of the object. The paper presents a circuit-technical design and performance pendulous accelerometer of compensation type. The mathematical model of the motion of the accelerometer, the result of its solution is the calculation of the transfer function and the construction of a system of automatic control of the output signal of the accelerometer. Thus, the output signal of the accelerometer is a signal containing the compensation of destabilizing factors. To prevent lack of circuit removal signal from the sensors in analog form with subsequent digital conversion of the developed scheme and a technical solution with the use of pulse width modulation. Great attention is paid to the calculation and synthesis of mathematical models of stiffness and strength of elastic element. This gave the opportunity to enter the adjustment changes the stiffness of the elastic element when the temperature increases and as a result led to the calculation and manufacture of the damping elements as a sensitive element, and the entire block of accelerometers. The results of the calculation of mathematical models of the spring elements published in the magazine. A key section of the thesis is devoted to the section layout. In this section, we present the design of the stand for adjusting, verification, metrological attestation of the instrument. The design of the stand provides a simulated application of the real load on the instrument cluster. The calculation of reliability ERE showing the high setting, giving you the opportunity to use the accelerometer in modern navigation systems.