| 重载航空负载模拟器非线性最优前馈补偿控制 |
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| 引用本文： | 欧阳小平,李锋,朱莹,杨上保,杨华勇. 重载航空负载模拟器非线性最优前馈补偿控制[J]. 航空学报, 2016, 37(2): 669-679. DOI: 10.7527/S1000-6893.2015.0277 |
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| 作者姓名： | 欧阳小平 李锋 朱莹 杨上保 杨华勇 |
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| 作者单位： | 1. 浙江大学流体动力与机电系统国家重点实验室, 杭州 310027;2. 航空机电系统综合航空科技重点实验室, 南京 211100 |
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| 基金项目： | 国家自然科学基金，国家“973”计划 |
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| 摘 要： | 重载航空负载模拟器是用来模拟"C919"、"运-20"等重载飞机舵面工作载荷的地面仿真平台。设计了一种重载航空负载模拟器,采用非对称缸作为执行机构以在小体积下完成大载荷加载。为了消除多余力对重载航空负载模拟器加载精度的影响,分析了非对称缸正反向运动和大载荷变化下伺服阀流量增益的非线性变化对前馈补偿函数的影响,并设计了非线性参数估计控制器。同时分析了加速度等动态参数变化和静态参数的误差对多余力消除的影响,设计了参数最优控制器。仿真和试验结果均表明,相比于传统前馈补偿控制器,所设计的非线性最优前馈补偿控制器下的加载精度和多余力抑制能力提高了50%以上。
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| 关 键 词： | 重载 负载模拟器 多余力 非线性控制 前馈控制 |
| 收稿时间： | 2015-06-11 |
| 修稿时间： | 2015-10-13 |
Nonlinear optimal feedforward compensation controller for heavy load aviation load simulator |
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| OUYANG Xiaoping,LI Feng,ZHU Ying,YANG Shangbao,YANG Huayong. Nonlinear optimal feedforward compensation controller for heavy load aviation load simulator[J]. Acta Aeronautica et Astronautica Sinica, 2016, 37(2): 669-679. DOI: 10.7527/S1000-6893.2015.0277 |
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| Authors: | OUYANG Xiaoping LI Feng ZHU Ying YANG Shangbao YANG Huayong |
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| Affiliation: | 1. State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China;2. Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration, Nanjing 211100, China |
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| Abstract: | Heavy load aviation load simulator is the ground simulation platform, which is used to simulate the real work load of the heavy-duty aircrafts such as C919 and Yun-20. A heavy-duty aviation load simulator is developed to achieve large load in limited space and the asymmetric cylinder is used as the actuator. In order to eliminate the influence of surplus force on the loading precision of the overloaded simulator, the influence of the bidirectional motions of the cylinder and the nonlinear flow gain coefficient of the servo valve for the feedforward compensation function are analyzed, and the nonlinear parameter estimation controller has been proposed. Meanwhile, the influence of dynamic parameters' variation(such as acceleration) and static parameter error for eliminating the excessive force is analyzed, and the parameter optimal controller is developed. Both simulation and test results show that the performance of the developed feedforward compensation controller has been improved by more than 50% in the loading precision and the eliminating ability of the surplus force, compared to the traditional feedforward compensation controllers. |
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| Keywords: | heavy load load simulator surplus force nonlinear control feedforward control |
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