一个力量平衡加速计的控制算法设计
Zhiqiang Liu1, Lei Xia1, Bin Wu2
1Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province, Department of Mechanics, Zhejiang University, Hangzhou 310027, China.
一个新的模型预测控制 (MPC) 算法改进了力平衡加速度计 (FBA). 这种先进的控制提高了测量准确度,并扩大了FBA的频率范围,即使有时间延迟.
科学领域:
- 仪器仪表和测量仪器的使用
- 控制系统工程 控制系统工程
- 机械工程 机械工程
背景情况:
- 力量平衡加速度计 (FBA) 使用闭环控制,性能严重依赖于控制算法.
- 传统的控制策略往往通过专注于响应最小化来限制FBA准确性和频率带宽.
研究的目的:
- 为力平衡加速度计设计一种新的控制算法,以考虑时间延迟.
- 为了提高FBA的测量精度和运行频率范围.
主要方法:
- 模型预测控制 (MPC) 用于设计FBA的控制算法.
- 提出了一种可变增强方法,将控制问题转化为测量误差最小化.
- 使用分密化方法来解决闭环系统中的时间延迟.
主要成果:
- 拟议的基于MPC的控制有效地管理了FBA闭环中的时间延迟,长达控制期的10倍.
- 在超过500赫兹的频率范围内实现了精确的加速度测量.
- FBA敏感元件的振动响应保持在微米级,确保了广泛的测量范围.
结论:
- 开发的基于MPC的控制算法显著提高了FBA性能,克服了传统方法的局限性.
- 该策略可实现精确的高频加速度测量,具有广泛的动态范围.
- 这一进步对于需要精确惯性传感的应用至关重要.
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