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Decoupling servo control loop system and method for two-axis integrated gyro accelerometer

A technology of accelerometer and servo control, applied in general control system, control/adjustment system, adaptive control, etc., can solve the problems of insufficient output accuracy, achieve the goal of improving steady-state accuracy, reducing dynamic error, and improving output accuracy Effect

Active Publication Date: 2018-10-19
BEIJING INST OF AEROSPACE CONTROL DEVICES
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Problems solved by technology

There is no design scheme for the servo loop of the dual-axis integrated gyro accelerometer in China, and the output accuracy is not enough. Therefore, it is necessary to carry out the design of the servo loop of the dual-axis integrated gyro accelerometer

Method used

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  • Decoupling servo control loop system and method for two-axis integrated gyro accelerometer

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Embodiment Construction

[0035] The invention discloses a two-axis integrated gyro accelerometer decoupling servo control loop system and method. The decoupling servo control loop is a servo control loop for a two-axis integrated gyro accelerometer. A two-axis integrated gyro accelerometer decoupling servo control loop system designed by the present invention includes a two-input-output decoupler, a gain compensator, two identical second-order integral modules and two identical lead-lag modules, which are 2 ×2-dimensional multi-input multi-output transfer function matrix, which can realize the decoupling of two cross-link loops; two integration links make the gyro accelerometer system a type II system, and the second-order integration module can eliminate the constant angular velocity change rate related errors, thereby improving the steady-state accuracy of the servo loop system; the lag-lead link can increase the dynamic gain of the system in the low-frequency band, which is beneficial to reduce the ...

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Abstract

The invention discloses a decoupling servo control loop system and method for a two-axis integrated gyro accelerometer. The decoupled servo control loop is a servo control loop for the two-axis integrated gyro accelerometer. The decoupling servo control loop system and method for the two-axis integrated gyro accelerometer comprises a two-input / output decoupler, a gain compensator, two identical second-order integral modules and two identical lead lag modules, which can realize decoupling of two interlinking loops; the second-order integral modules can eliminate errors associated with the change rate of the constant angular velocity, thereby improving the steady-state accuracy of the servo loop system; and the lag lead can link can improve the dynamic gain of the low-frequency band of the system, which is beneficial to reducing dynamic errors. The output decoupling link is added in the servo control loop, which can overcome the interlinking problem between the two current output valuesof the servo loop and the angular velocity, and improve the output precision of the gyro accelerometer system.

Description

technical field [0001] The invention relates to a servo control loop of a gyro accelerometer, in particular to a two-axis integrated gyro accelerometer decoupling servo control loop system and method, and belongs to the field of aviation and aerospace for high-precision apparent acceleration measurement. Background technique [0002] In the high-precision inertial stabilization platform, the pendulum integral gyro accelerometer is mainly used to sense the large overload of the missile and the apparent acceleration along the input axis direction, which is a single-degree-of-freedom accelerometer. [0003] On the basis of the traditional gyro accelerometer, the two-axis integrated gyro accelerometer is increased from one servo loop to two servo loops so that the frame angle α and the table body angle β are kept at zero. At the same time, in the two servo loops Calculate the OX by measuring the current value of the control motor 1 and OY 1 The acceleration value for the direc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/02
CPCG05B13/024
Inventor 魏宗康周姣
Owner BEIJING INST OF AEROSPACE CONTROL DEVICES
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