AN EXPERT SYSTEM FOR DETECTION, LOCALIZATION AND CORRECTION OF FAULTS IN A MULTILOOP LAUNCH VEHICLE GUIDANCE AND CONTROL-SYSTEM

被引：5

作者：

DORAISWAMI, R ^{[1
]}

DASGUPTA, S ^{[1
]}

机构：

[1] INDIAN SPACE RES ORG,TRIVANDRUM,INDIA

来源：

INTERNATIONAL JOURNAL OF SYSTEMS SCIENCE | 1992年 / 23卷 / 04期

关键词：

D O I：

10.1080/00207729208949233

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

A detection, localization and correction of failure in launch vehicle guidance and control system is proposed. The detection and localization of faults is based on monitoring an abrupt change in the error signal in each of the feedback loops, namely, the actuator, digital autopilot, navigation and guidance as well as control loops of inertial sensors such as gyroscopes, inertial platform servos and accelerometers. Correction schemes are proposed for errors located in each of the loops. A scheme based on reshuffling of control functions to healthy actuators, in the case of a single failure in an actuator loop, is described. Failures in inertia sensors are overcome by software signal reconstruction from healthy sensors. Failures in a guidance loop cause a switchover to an open loop mode that provides vehicle turning rates that are optimal at the last valid loop instant. Retargetting is provided to account for widespread dispersions in vehicle thrust performance.

引用

页码：605 / 613

页数：9