Transactions of Materials and Heat Treatment

Title：Stability analysis on hydraulic control loading system of flight simulator

Authors： Zhao Jinsong Zhao Zining Zhang Yang

Unit： Yanshan University

KeyWords： flight simulation control loading system electro-hydraulic servo system force-displacement impedance stability analysis

ClassificationCode：TH137.5

year,vol(issue):pagenumber：2016,41(6):71-77

Abstract：

For the flight simulator hydranlic control loading system (CLS) of B737-800, the control system model was established by dividing the system into internal loop and outer loop seperately, and an equivalent force-displacement impedance model was conducted in order to analyze the influence factors of its stability. Furthermore, the influences of the inner loop characteristic on the outer loop frequency characteristic and the control mechanism on the outer loop stability were studied, and the constraint conditions of the inner loop bandwidth and the outer loop stability were obtained. Finally, the system stability conditions were validated by the experiments. The experiment result is in agreement with the theoretical derivation and shows that the control system model is of a high force tracking accuracy; expanding the bandwidth of internal loop is benefit to enhance the system stability; the greater the absolute value of force model mass is,the worse the system stability is.

Funds：

基金项目:国家自然科学基金资助项目(51505412)；秦皇岛市科技支撑计划项目（201502A018）；燕山大学青年教师自主研究计划课题(14LGB004)

作者简介：赵劲松(1983-)，男，博士，讲师 E-mail：zhaojinsong@ysu.edu.cn 通讯作者：赵子宁(1992-)，男，硕士研究生 E-mail：913676681@qq.com

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