Degree: Ph.D.
Major: Mechanical Engineering
Thesis Title: Research on resonant frequency tracking of percussive ultrasonic drills for small celestial bodies anchoring
(面向小天体表面锚固的冲击式超声波钻谐振频率追踪研究)
论文开展了冲击式超声波钻驱动控制系统匹配参数多目标优化设计、超声波钻串联谐振频率的变步长识别和基于强化学习的谐振频率追踪等方面的研究，取得了下列创新性研究成果：
- 揭示了冲击式超声波钻在不同岩石对象的钻进阻抗变化规律，提出了一种以电流幅值最大化并兼顾驱动能效的LC型匹配网络参数多目标设计方法，获得了驱动性能最优的匹配网络参数。
- 阐明了谐振相角在钻具组件随机碰撞冲击条件下具有高稳定保持性规律，确定了谐振相角作为超声波钻谐振工作状态判据，提出了谐振区域可变步长精细频率扫描识别算法，提高了谐振频率辨识的速度。
- 建立了超声波钻谐振区间内融合钻进速度和机电转换效率的可调目标性能函数模型，提出了一种削弱突增、骤减采样干扰的高容差强化学习谐振频率追踪算法，实现了强抗干扰的谐振驱动性能可调可控。
Publication:
- Qiukui Zhang, Qiquan Quan*, Yuheng Wang, Dewei Tang, “Variable step identification of resonance frequency for percussive ultrasonic drilling based on wavelet decomposition,” Mechanical Systems and Signal Processing, vol. 231, 112655, 2025.
- Qiukui Zhang, Qiquan Quan*, Dewei Tang and Zongquan Deng, “Network matching against frequency drift for ultrasonic drills: Method and experiment,” IEEE Transactions on Power Electronics, vol. 39, iss. 1, pp. 1364–1377, 2023.
- Qiukui Zhang, Dewei Tang, Qiquan Quan*, Yikang Jin, Zongquan Deng, “Hill-climbing & fuzzy combined control algorithm for a percussive ultrasonic drill,” Applied Acoustics, vol. 211, 109499, 2023.
- Qiukui Zhang, Qiquan Quan*, Dewei Tang, “Dynamic impedance measurement analysis and LC matching network optimization of percussive ultrasonic drilling,” Measurement, vol. 257, 118806, 2026.
- Qiukui Zhang, Qiquan Quan*, Dewei Tang, “Reinforced learning based resonant frequency tracking for percussive ultrasonic drills,” in Proceedings of the 2025 IEEE International Conference on Mechatronics and Automation, 2025, pp. 1313–1318.
Project:
- 面向小行星锚固的双能量流驱动超声波钻探器作动机理研究，国家自然科学基金委面上项目，项目编号：51975139