AUTOMATIC BIASING CIRCUIT FOR DRIVING PIEZOELECTRIC BIMORPH ACTUATORS SAFELY AND EFFICIENTLY

摘要：

This paper proposes a simple circuit configuration for driving piezoelectric bimorph actuators in a high efficient way but not depolarizing the piezoceramics.Different from generating the bias voltages via some direct voltage converters,here two bias voltages are obtained from the driving voltage itself directly through a simple circuit.The values of the bias voltages can be adjusted from zero to the maximum value or minimum value of the driving voltage.A parallel bimorph can be actuated by applying the bias voltages to its top and bottom electrodes and the alternating voltage to the intermediate electrode.Experiments show that this method is effective when the actuating frequency should be high enough so that the bias voltages vary small.

关键词： Piezoelectric bimorph acutators Depolarization Automatic biasing circuit Maximum energy density

作者: Jian CHEN Yong-bin LIU Yang YE Qiao-sheng PAN Zhi-hua FENG

作者单位: Department of Precision Machinery and Precision Instrumentation, University of Science and Technolog Department of Precision Machinery and Precision Instrumentation, University of Science and Technolog School of Instrument Science and Opto-electronics Engineering, Hefei University of Technology, Hefei

会议类型: 国际会议

会议名称: The 2016 Symposium on Piezoelectricity,Acoustic Waves and Device Applications(2016全国压电和声波理论及器件技术研讨会)

会议地点: 西安

会议语种:英文

页码: 239-242

在线出版日期: 2016-10-21（万方平台首次上网日期，不代表论文的发表时间）