绝对重量计的建模和应用研究由V形线性超声波电机驱动
Lifeng Zhou1,2, Hao Xu3, Ranran Geng1,2
1Industrial Center, Nanjing Institute of Technology, Nanjing 211167, China.
The Review of scientific instruments
|December 3, 2024
概括
使用模糊的比例积分差值 (PID) 控制器改进了V形线性超声波电机 (LUSM),用于增强绝对重量计测量. 这种新的方法减少了振动,提高了稳定性和准确性,用于精确的重力测量.
科学领域:
- 物理 物理学 物理
- 工程 工程师 工程师 工程师
- 控制系统 控制系统
背景情况:
- 绝对重力计需要稳定的驱动元件来进行准确的测量.
- 在重力计中使用的V形线性超声波电机 (LUSM) 会产生影响准确度的振动.
- 现有的LUSM控制方法对于高精度的重力测量是不够的.
研究的目的:
- 为V形LUSM设计和实施一个模糊的比例积分差值 (PID) 控制器.
- 通过减轻发动机引起的振动来提高绝对重力计的稳定性和测量精度.
- 为了验证模糊PID控制器的性能与传统PID控制器和实验基准相比.
主要方法:
- 对于绝对重量计应用的LUSM技术指数的理论分析.
- 在真空/自然环境下,在不同的输入参数 (电压,预负载,频率) 下,对LUSM输出性能进行实验性调查.
- 在使用Verilog硬件描述语言 (HDL) 的现场可编程网关阵列 (FPGA) 上实现模糊的PID控制器.
- 构建一个测量重力加速度的实验系统,并将结果与标准的FG-5绝对重力计进行比较.
主要成果:
- 由模糊PID控制器驱动的V形LUSM显示出适合绝对重量计应用的输出性能.
- 与传统的PID控制器相比,模糊的PID控制器显著降低了结构振动,如模拟中所示.
- 实验结果证实了系统的可重复和稳定的运行.
- 紧的92克LUSM实现了直接的力输出,减少了系统的复杂性和重量.
结论:
- 模糊的PID控制器有效地提高了绝对重力计的V形LUSM的稳定性和准确性.
- 开发的系统为高精度重力测量提供了一种轻量级和简化的解决方案.
- 将LUSM与先进的控制策略相结合,为重力测量技术带来了有前途的进步.
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