对于ESKF和LQR的无拖拉式控制系统而言,一种新的闭环结构
Xiaorong Ye1,2, Junxiang Lian1,2, Guoying Zhao1,2
1TianQin Research Center for Gravitational Physics, Sun Yat-sen University, Zhuhai 519082, China.
Sensors (Basel, Switzerland)
|August 12, 2023
概括
这项研究介绍了一种优化的主动干扰拒绝控制 (ADRC) 系统,用于无拖动控制航天器. 这种新方法提高了引力波探测卫星的精度和速度.
科学领域:
- 航空航天工程 航空航天工程
- 控制系统 控制系统
- 天体物理学 天体物理学
背景情况:
- 太空中的引力波探测卫星需要超稳定的惯性基准测试质量.
- 像太阳压力和大气阻力这样的干扰挑战了无阻力控制系统的精度.
- 传统的主动干扰拒绝控制 (ADRC) 对复杂噪声的稳定状态精度和收速度有局限性.
研究的目的:
- 为太空载重力波探测器开发一个优化的无拖动控制策略.
- 为了提高航天器控制系统的稳定状态精度和动态性能.
- 解决传统控制方法在处理复杂干扰方面的局限性.
主要方法:
- 应用一种优化的主动干扰排斥控制 (ADRC) 技术.
- 集成扩展状态卡尔曼波器 (ESKF) 进行实时状态和干扰估计.
- 设计了一种新的闭环控制结构,将线性正方体调节器 (LQR) 与ESKF相结合.
主要成果:
- 拟议的LQR控制器与传统的非线性状态错误反 (NSEF) 相比,显示了更快的响应时间.
- 新的控制结构在管理复杂的扰动和干扰方面实现了更高的准确性.
- 模拟结果验证了LQR-ESKF联合方法对无拖动控制的有效性.
结论:
- 优化的ADRC与LQR和ESKF提供了一个卓越的解决方案,用于在引力波探测任务中无拖动控制.
- 这种新的控制结构满足了超静态和超稳定的惯性基准的严格设计目标.
- 拟议的方法适合在未来的引力波探测卫星中实施.
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