【摘要】 磁悬浮控制力矩陀螺(MSCMG)在输出力矩且不计重力引入的功耗时,磁轴承的铜耗与输出力矩的平方成正比。这个问题不仅导致在输出额定力矩时,磁轴承的功耗在总功耗中占有较大的比例,而且最终限制了磁悬浮控制力矩陀螺的最大输出力矩。为解决这一难题,提出了通过控制转子悬浮位置由永磁体提供转矩的方法,并且分析了转子位置变化对输出力矩的影响。通过仿真和实验表明,输出力矩时磁轴承的功耗可降至静浮水平,样机实验表明,输出力矩为21Nm时磁轴承铜耗降为原来的34%。更多还原

【Abstract】 This paper is focused on a new control method to lower the power loss of the active magnetic bearing(AMB) in magnetically suspended control moment gyro(MSCMG).The problem is that,when outputting torque,the copper loss of AMB is approximately proportion to the square of the output torque,ignoring the power loss introduced by gravity.In the present article,by employing the method that permanent magnetic generates the force introduced by the output torque,the power loss of the AMB was greatly cut down.Theoretical analysis showed that the power loss of the AMB could reduce nearly to zero using the new control method.The experiment showed that the new control method could reduce the power loss to 34% when the MSCMG outputs torque 21Nm.更多还原