摘要
在超声换能器的工业应用中,谐振频移和阻抗变化是常见的现象,他们将导致换能器的效率变低和振幅不稳定。为了解决这一问题,文中开发一个驱动和测量系统来跟踪超声波换能器的谐振,它具有实时监视超声波换能器各性能参数的能力。Lab VIEW中使用PI控制算法来实现谐振跟踪。另外,该系统可以方便地运用于不同的换能器和负载条件。通过实验,验证了该系统的可行性与适用性。
Resonant frequency shift and impedance variation are common phenomena in the industrial application of ultrasonic transducers. They result in low power efficiency and unstable vibration amplitude. To solve this problem, a driving and measurement system has been developed to track the resonance frequency of transducers. It has the ability to monitor the performance parameters of the ultrasonic transducers in real time. PI control algorithm is used to achieve resonance tracking in LabVIEW. In addition, it can be used in different transducers and load conditions flexibility. The result of the experiment manifests that the system is feasible and proper.
出处
《信息技术》
2015年第9期103-105,114,共4页
Information Technology
关键词
超声换能器
谐振跟踪
PI控制算法
ultrasonic transducers
resonance tracking
PI control algorithm
