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Title:
MULTI-REDUNDANCY ELECTROMECHANICAL SERVO SYSTEM FOR REGULATING LIQUID ROCKET ENGINE AND IMPLEMENTATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/205787
Kind Code:
A1
Abstract:
A multi-redundancy electromechanical servo system for regulating a liquid rocket engine, comprising a triple-redundancy servo controller (1), a double-redundancy servo driver (2), double-winding electromechanical actuators (4, 5), a triple-redundancy position sensor (6), a thrust regulator (8) and a mixed ratio regulator (9). Engine thrust, a mixed ratio regulation instruction and a feedback signal of the triple-redundancy position sensor are inputted to the triple-redundancy servo controller, and the triple-redundancy servo controller outputs thrust and mixed ratio regulation PWM wave control signals to the double-redundancy servo driver. The double-redundancy servo driver outputs a three-phase variable-frequency variable-amplitude sine wave current to drive the double-winding electromechanical actuators to drive the thrust regulator and the mixed ratio regulator to move, thus achieving engine thrust and mixed ratio regulation. The present servo system has a simple system and excellent control characteristics, has the ability to "control a two-degree fault operation and drive a one-degree fault operation", and significantly improves the reliability and usage maintainability of the thrust and mixed ratio regulation of the liquid rocket engine. Also disclosed is a method for implementing the foregoing multi-redundancy electromechanical servo system.

Inventors:
LI, Bin (289 Feitian Road, Aerospace Base Chang'an Distric, Xi'an Shaanxi 3, 710003, CN)
CHEN, Hui (289 Feitian Road, Aerospace Base Chang'an Distric, Xi'an Shaanxi 3, 710003, CN)
ZHANG, Xiaoguang (289 Feitian Road, Aerospace Base Chang'an Distric, Xi'an Shaanxi 3, 710003, CN)
YANG, Yalong (289 Feitian Road, Aerospace Base Chang'an Distric, Xi'an Shaanxi 3, 710003, CN)
WEI, Jingfang (289 Feitian Road, Aerospace Base Chang'an Distric, Xi'an Shaanxi 3, 710003, CN)
GAO, Yushan (289 Feitian Road, Aerospace Base Chang'an Distric, Xi'an Shaanxi 3, 710003, CN)
DONG, Guochuang (289 Feitian Road, Aerospace Base Chang'an Distric, Xi'an Shaanxi 3, 710003, CN)
MA, Dongying (289 Feitian Road, Aerospace Base Chang'an Distric, Xi'an Shaanxi 3, 710003, CN)
CHEN, Weiyu (289 Feitian Road, Aerospace Base Chang'an Distric, Xi'an Shaanxi 3, 710003, CN)
PU, Xingxing (289 Feitian Road, Aerospace Base Chang'an Distric, Xi'an Shaanxi 3, 710003, CN)
Application Number:
CN2019/075651
Publication Date:
October 31, 2019
Filing Date:
February 21, 2019
Export Citation:
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Assignee:
XI' AN AEROSPACE PROPULSION INSTITUTE (289 Feitian Road, Aerospace Base Chang'an Distric, Xi'an Shaanxi 3, 710003, CN)
International Classes:
F02K9/56
Foreign References:
CN108661823A2018-10-16
CN105626312A2016-06-01
CN105630002A2016-06-01
CN106368852A2017-02-01
CN105523197A2016-04-27
US20100121552A12010-05-13
US5647201A1997-07-15
Attorney, Agent or Firm:
PATENT AGENT OF CHINA AEROSPACE TECHNOLOGY (Room 607, Aerospace Technology Building No. 16, Fu Cheng Road, Haidian District, Beijing 8, 100048, CN)
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