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(1995—),男。主要研究方向为结构动力学建模与航天器振动主动控制。通信地址:陕西省西安市长安区钓台街道西安交通大学创新港校区(710049)电子邮箱:1036682785@qq.com |
网络出版日期: 2026-05-28
基金资助
国家自然科学基金(U22B2013)资助
Simulation and Ground Verification of Nonlinear Active Vibration Isolation Algorithm for Spacecraft with Output Power Constraint
Online published: 2026-05-28
在航天器微振动主动隔振系统应用中,普遍存在非线性传递路径和作动器输出功率受限的问题。在避免作动器过驱动的前提下获得良好的主动控制性能,具有重要的研究意义。传统航天器微振动主动隔振系统的设计多侧重于系统的非线性补偿或控制器输出功率约束单一维度,鲜有算法同时兼顾上述两个方面。为此,提出了一种输出功率约束的航天器非线性主动隔振算法。该算法通过融合沃尔泰拉非线性滤波模块和最小输出方差功率约束模块,在确保作动器不过驱的同时,进一步提升了主动隔振系统对非线性扰动的控制性能。数值仿真和地面实验结果表明,该算法能够灵活调控控制器输出功率,防止执行器饱和。地面验证结果表明,在飞轮3 000 RPM和6 000 RPM的典型工况下,该算法相较传统最小输出方差自适应控制算法的主动隔振性能分别提升了
关键词: 沃尔泰拉滤波; 输出控制约束; 最小输出方差; 非线性输入或传递路径
张骞 , 赵玉婷 , 刘金鑫 , 王晨希 . 输出功率约束的航天器非线性主动隔振算法仿真及地面验证[J]. 空间科学与试验学报, 2026 , 3(2) : 112 -120 . DOI: 10.19963/j.cnki.2097-4302.2026.02.012
In the application of spacecraft micro-vibration active vibration isolation systems, problems of nonlinear transmission paths and limited actuator output power are prevalent. It was considered of great significance to obtain superior active control performance while avoiding actuator over-driving. Traditional spacecraft micro-vibration active isolation systems primarily focused on either nonlinear compensation or controller output power constraints, while few algorithms simultaneously addressed both. To this end, a nonlinear active vibration isolation algorithm for spacecraft with output power constraints Minimum Output Variance Filtered-x Least Mean Square (MOV-VFxLMS) was proposed in this paper. By integrating Volterra nonlinear filtering with minimum output variance power constraint, the control performance of the active isolation system against nonlinear disturbances was further enhanced while ensuring that the actuator was not over-driven. Numerical simulations and ground experiments were conducted, the results demonstrated that the proposed algorithm could flexibly regulate the controller output power and prevent actuator saturation. The ground verification results indicated that, under typical operating conditions of the flywheel at 3 000 RPM and 6 000 RPM, the proposed algorithm exhibited an improvement of
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