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magnetic coil
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  magnetic coil
The arc was struck between two concentric ring electrodes, d mm apart, and rotated using a magnetic coil.
      
Intracranial stimulation of the facial nerve: normative values with magnetic coil in 240 nerves
      
To assess the influence of repeated magnetic coil stimulation (MCS) of the peripheral nervous system on epiphyseal cartilage, we evaluated histological and structural changes after repeated MCS applied to the knee joints of young rabbits.
      
Possible complications of magnetic coil stimulation in living tissue: Assessment of changes in epiphyseal cartilage
      
Ceramics are required for a number of applications in fusion devices, among the most critical of which are magnetic coil insulators, windows for RF heating systems, and structural uses.
      
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In this paper,the roll/yaw attitude controller of a biased momentum satellite is designed through frequency separation method.The controller is based only on roll information feedback,and the control parameters are analyzed to select appropriate values.The pitch-loop control is achieved by a biased momentum wheel,and is widely used in many satellites.The roll/yaw loop control is achieved through two reaction wheels equipped along the principal axes.Meanwhile,three orthogonally magnetic coils installed...

In this paper,the roll/yaw attitude controller of a biased momentum satellite is designed through frequency separation method.The controller is based only on roll information feedback,and the control parameters are analyzed to select appropriate values.The pitch-loop control is achieved by a biased momentum wheel,and is widely used in many satellites.The roll/yaw loop control is achieved through two reaction wheels equipped along the principal axes.Meanwhile,three orthogonally magnetic coils installed are used to unload wheel momentum.Simulation results demonstrate that the pointing accuracy of 0.05° and stability accuracy of 0.001((°))/s can be attained,which illustrate the effectiveness of the proposed control law and control parameters selection method.

以偏置动量卫星为背景,针对滚动/偏航回路的姿态控制,采用频率分离法分析设计了基于滚动信息反馈的控制器,并给出控制参数的合理选取范围。卫星俯仰回路采用常用的偏置动量轮控制,其滚动/偏航轴上各安装一个反作用飞轮以完成姿态控制。同时,卫星三轴配置磁力矩器以实现动量轮/反作用飞轮的角动量卸载。最后进行了数学仿真,结果表明,卫星滚动/偏航轴的姿态指向控制的精度和稳定度分别达到0.05°和0.001(°)/s,验证了所设计的控制规律的可行性以及控制参数分析的合理性,具有一定的理论意义和工程应用价值。

 
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