电压驱动与电流积分器相结合实现压电电荷控制  

Charge Control by Voltage Driving and Current Integration

作　　者：董维杰[1] 崔玉国[1] 杨志欣[1] 孙宝元[1] 

机构地区：[1]大连理工大学机械工程学院传感测控研究所,辽宁大连116023

出　　处：《计算机测量与控制》2002年第4期260-262,共3页Computer Measurement &Control

摘　　要：采用电荷控制可以补偿压电执行器的位移迟滞，文中在分析几种电荷控制方案不足的基础上，提出了集电压驱动和电流积分器为一体的驱动方法。积分器能获得压电电荷，却不影响驱动电压。为补偿压电漏电，给积分器增加了漏电流补偿电阻。基于此驱动电路可实现电荷控制。文章用于开环位移监测和闭环PID控制的线性位移跟踪，证实了该电荷控制方法的有效性。Piezoelectric actuator controlled by charge shows less hysteresis than by voltage. Several implementationsof charge control are reviewed. Observing their drawbacks, a new charge control method is developed based on a com-pound circuit combining voltage driving with current integrator. A compensatory resistor is added to integrator to com-pensate current leakage of piezoceramic. The method has been used in measuring piezoelectric birnorph's free displacementand linear displacement in PID tracking control in closed loop.

关 键 词：电压驱动 电流积分器 压电电荷控制 压电陶瓷 迟滞 执行器 积分器 

分 类 号：TN384[电子电信—物理电子学]