通过能量消耗自动PID控制策略用于点击模式原子力显微镜
Yuan Zhao1, Sha-Sha Xiao1, Ji-Rui Liu1
1State Key Laboratory of Precision Measurement Technology and Instruments, Tianjin University, Tianjin 300072, China.
Sensors (Basel, Switzerland)
|July 30, 2025
概括
本研究介绍了自动PID控制策略,用于触摸模式原子力显微镜 (TM-AFM),以管理能量散射效应. 这种新方法通过分析能量损失和相差动态来提高表面高度跟踪的准确性.
科学领域:
- 纳米技术 纳米技术
- 表面科学是一门学科.
- 控制系统工程 控制系统工程
背景情况:
- 触摸模式原子力显微镜 (TM-AFM) 对于纳米级成像至关重要.
- 能量消耗显著影响TM-AFM的尖端样本相互作用和成像稳定性.
- 现有的控制策略往往难以有效地弥补这些能量消耗效应.
研究的目的:
- 为TM-AFM开发一个自动比例整数导数 (PID) 控制策略.
- 解决和减轻能量消耗对尖端样本相互作用的影响.
- 为了提高TM-AFM成像的准确性和稳定性.
主要方法:
- 综合能源分析,以量化能量损失和相差动态之间的关系.
- 相互作用力的系统分解来重建系统转移函数.
- 开发了一个基于SIMULINK的虚拟TM-AFM用于模拟,并基于相位延迟生成了一个PID增益查找表.
主要成果:
- 在关键振荡期间检查PID增益波动.
- 在校准纳米网和涂层样本上进行实验验证.
- 与传统方法相比,证明了跟踪精度的提高和表面高度测量的5.4%的改进.
结论:
- 提出的自动PID控制策略有效地管理TM-AFM中的能量消耗.
- 该方法提高了成像性能,导致更准确的表面高度测量.
- 这种方法为改善TM-AFM运行稳定性和数据质量提供了强大的解决方案.
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