Novel high-speed current control amplifier used for PZT multi-stacked actuator

The invention discloses a novel high-speed current control amplifier used for a PZT multi-stacked actuator, comprising a voltage source, a piezoelectric driver and an operational amplifier; and the voltage source generates a voltage, the voltage is converted into an output current by virtue of the operational amplifier, and power is supplied to the piezoelectric driver. The novel high-speed current control amplifier provided by the invention is high in accuracy, and controlled elongation can be archived in a wide dynamic range; and inherent nonlinearity and lag of the actuator are greatly reduced, thereby having enough tracking control accuracy. 本发明公开了种用于PZT多层堆叠执行器的新型高速电流控制放大器，包括电压源、压电驱动器和运算放大器；电压源产生电压，通过运算放大器转换成输出电流，为压电驱动器供电。本发明提供的新型高速电流控制放大器精确度高，同时受控的伸长率可以在很宽的动态范围内存档；执行器固有的非线性和滞后大大减少，从而有足够的跟踪控制精度。