曾海泉.超磁致伸缩作动器的混沌非线[J].农业机械学报,2009,40(8):185-188.
.Nonlinearity of Giant Magnetostrictive Actuators[J].Transactions of the Chinese Society for Agricultural Machinery,2009,40(8):185-188.
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超磁致伸缩作动器的混沌非线   [下载全文]
Nonlinearity of Giant Magnetostrictive Actuators   [Download Pdf][in English]
  
DOI:10.3969/j.issn.1000-1298.[year].[issue].[sequence]
中文关键词:  超磁致伸缩作动器  非线性响应  分岔  混沌
基金项目:
曾海泉
厦门理工学院
中文摘要:激励电流与输出位移之间的非线性影响超磁致伸缩作动器的性能,混沌现象是超磁致伸缩作动器非线性的重要方面。为研究超磁致伸缩作动器的混沌行为,建立了其非线性动态力学模型,用数值方法得到了反映系统非线性响应特性的分岔图、最大Lyapunov指数图、相图、Poincaré截面图、幅值谱等。分析结果表明,在低频条件下,激励电流过大或系统刚度过低都会导致混沌现象的出现。
Key Words:
Abstract:Nonlinearity between exciting current and output displacement spoils magnetostrictive actuators’ performance. Chaotic nonlinearity is an important aspect of nonlinear character for magnetostrictive actuators. To explore the erratic behaviors of the actuators, a nonlinear dynamic model was established. The bifurcation diagrams, Lyapunov exponent, phase portrait, Poincaré mapping diagrams, amplitude spectrum, etc., which demonstrate dynamical characteristics of the system were obtained by numerical integration. Analysis indicates that under the condition of low frequency range, chaos would appear when exciting current is high and stiffness of the system is relatively low. 

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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