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中型磁力传动搅拌釜的特点及应用
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作者 王定忠 周力毅 《化工装备技术》 CAS 2000年第5期19-20,共2页
介绍了中型磁力传动搅拌釜所采用的特殊结构的磁性耦合器、独特的组合式搅拌器和釜底径向滑动轴承 ,并介绍了该搅拌釜的良好性能。
关键词 磁力传动 搅拌釜 搅拌器 磁性耦合器 滑动轴承
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磁传动水表中动态磁路设计 被引量:1
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作者 张亚君 《仪表技术》 2009年第5期60-61,共2页
基于铁磁学理论,建立了圆环磁性耦合的模型,推导出圆环磁性耦合器剩磁的计算公式,二磁体尺寸的确定;对于磁传动水表的设计具有参考价值。
关键词 圆环磁性耦合器 最大磁力矩 剩磁
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A practical robust nonlinear controller for maglev levitation system 被引量:5
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作者 李金辉 李杰 张耿 《Journal of Central South University》 SCIE EI CAS 2013年第11期2991-3001,共11页
In order to explore the precise dynamic response of the maglev train and verify the validity of proposed controller,a maglev guideway-electromagnet-air spring-cabin coupled model is developed in the first step.Based o... In order to explore the precise dynamic response of the maglev train and verify the validity of proposed controller,a maglev guideway-electromagnet-air spring-cabin coupled model is developed in the first step.Based on the coupled model,the stresses of the modules are analyzed,and it is pointed out that the inherent nonlinearity,the inner coupling,misalignments between the sensors and actuators,and external disturbances are the main issues that should be considered for the maglev engineering.Furthermore,a feedback linearization controller based on the mathematical model of a maglev module is derived,in which the nonlinearity,coupling and misalignments are taken into account.Then,to attenuate the effect of external disturbances,a disturbance observer is proposed and the dynamics of the estimation error is analyzed using the input-to-state stability theory.It shows that the error is negligible under a low-frequency disturbance.However,at the high-frequency range,the error is unacceptable and the disturbances can not be compensated in time,which lead to over designed fluctuations of levitation gap,even a clash between the upper surface of electromagnet and lower surface of guideway.To solve this problem,a novel nonlinear acceleration feedback is put forward to enhancing the attenuation ability of fast varying disturbances.Finally,numerical comparisons show that the proposed controller outperforms the traditional feedback linearization controller and maintains good robustness under disturbances. 展开更多
关键词 dynamic robust nonlinear DECOUPLING separation levitation system MAGLEV
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