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针对压电陶瓷驱动器的非线性应变,以压电陶瓷微位移驱动原理为基础,分析了扫频激光器腔长控制原理;在硬件时钟的定时下,分析了压电陶瓷的驱动特性,并通过调整驱动信号的步长电压来调节压电陶瓷的非线性。设计了基于虚拟仪器的控制系统,并对线性化方法进行了原理分析和实验。实验结果表明,该测量系统可以使压电陶瓷在其伸长范围内线性地伸长。
Based on the principle of piezoceramic micro-displacement driving, aiming at the nonlinear strain of piezoceramic actuator, the principle of swept-length laser cavity length control was analyzed. The driving characteristics of piezoceramic actuator were analyzed under the condition of hardware clock, The step voltage of the drive signal adjusts the non-linearity of the piezoceramic. The control system based on virtual instrument was designed and the principle and experiment of linearization method were analyzed. The experimental results show that the measuring system can make the piezoelectric ceramic extend linearly in the range of its elongation.