【摘要】 通过Matlab/Simulink建立了压电堆执行器迟滞补偿模型,由压电堆执行器无外载静态试验获得了基于Maxwell粘-滑模型的迟滞特性模型参数,将模型用于高压共轨压电喷油器控制。实验结果表明,采用建立的迟滞补偿模型,通过开环前馈控制,有效抑制了压电堆执行器的迟滞影响,喷油率上升和下降速率减缓,有利于降低燃烧噪声和减小"水击现象"对喷油量波动的影响。更多还原

【Abstract】 The hysteresis compensation model of the piezoelectric multilayer actuator has been established by Matlab/Simulink.The parameters of the hysteresis characteristics based on the Maxwell stick-slip model have been obtained by the static experiment of the piezoelectric multilayer actuator without loading.The model was used for the controlling of the high-pressure piezoelectric injector.The experimental results showed that the hysteresis of the piezoelectric multilayer actuator has been suppressed,and the rising rate and the downing rate of the inject oil have been reduced through the open-loop feedforward control by using the established hysteresis compensation model,in that it is benefial to reducing the conbustion noise and lowering the effect of the "water-hammer" phenomena on the injection quantity fluctuation.更多还原