论文:2019,Vol:37,Issue(5):1011-1017
引用本文:
刘楠, 刘振明, 龚鑫瑞, 黄新源, 熊春友. 压电驱动器陶瓷材料温度特性研究及模型修正[J]. 西北工业大学学报
LIU Nan, LIU Zhenming, GONG Xinrui, HUANG Xinyuan, XIONG Chunyou. Study on Temperature Characteristics of Ceramic Materials for Piezoelectric Actuators and Model Modification[J]. Northwestern polytechnical university

压电驱动器陶瓷材料温度特性研究及模型修正
刘楠1, 刘振明1, 龚鑫瑞1, 黄新源1, 熊春友2
1. 海军工程大学 动力工程学院, 湖北 武汉 430033;
2. 陆军步兵学院 工程技术与应用系, 江西 南昌 330100
摘要:
在压电陶瓷热-电-力多场耦合加载试验台上,对压电驱动器的陶瓷材料在强电场(2 kV/mm)和变温度(30~150℃)下的性能进行了测试,分析了电滞回线、应变回线以及自由电容与介电损耗角正切值随着温度的变化关系,同时建立了考虑温度影响的陶瓷材料的位移特性数学模型,并验证了模型的准确性。结果表明:随着温度的升高,双极强电场下的电滞回线逐渐变得细长,同时剩余极化、最大极化和矫顽场均下降,且温度对剩余极化和矫顽场的影响比对最大极化s的影响更为强烈,应变回线呈现典型的蝶形曲线,负应变随温度的升高而逐渐下降至0.12%;在单极工作电场下,随温度升高,剩余极化变化较小,最大极化升高明显,增加了40%左右;材料的压电常数基本呈线性增加的趋势,自由电容与介电损耗角正切值不断增大,温度越高,增幅越大。
关键词:    柴油机    压电陶瓷    电滞回线    应变回线    数学模型   
Study on Temperature Characteristics of Ceramic Materials for Piezoelectric Actuators and Model Modification
LIU Nan1, LIU Zhenming1, GONG Xinrui1, HUANG Xinyuan1, XIONG Chunyou2
1. College of Power Engineering, Navy University of Engineering, Wuhan 430033, China;
2. Department of Engineering Technology and Application, Army Infantry College of PLA, Nanchang 330100, China
Abstract:
The performance of piezoelectric actuator ceramics under strong electric field(20 kV/cm) and variable temperature (30~150℃) were tested on a piezoelectric ceramic thermo-electro-mechanical multi-field loading test bench. The variation of hysteresis loop, strain loop, free capacitor and dielectric loss tangent with temperature was analyzed. A mathematical model of displacement characteristics of ceramic materials considering temperature effect is established, and the accuracy of the model is verified. The results show that the hysteresis loops become slender with the increasing of temperature, while the residual polarization, maximum polarization and coercive field decrease. The effect of the temperature on the residual polarization and coercive field is stronger than that on maximum polarization. The strain loop presents a typical butterfly curve, and the negative strain decreases gradually to 0.12% with the increasing of temperature. In the unipolar electric field, the residual polarization varies slightly with the increasing of temperature, and the maximum polarization increases about 40%. The piezoelectric constant of the material increases linearly. The free capacitor and dielectric loss tangent increases continuously. The higher the temperature, the greater the increase.
Key words:    diesel engine    piezo ceramic    hysteresis loop    strain loop    mathematical model   
收稿日期: 2018-10-09     修回日期:
DOI: 10.1051/jnwpu/20193751011
基金项目: 国家自然科学基金(51879269)与海军工程大学自主立项(425317Q013,425317Q014)资助
通讯作者:     Email:
作者简介: 刘楠(1991-),海军工程大学博士研究生,主要从事动力机械及热力系统的设计、仿真与优化研究。
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