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    • 30. 发明申请
    • MAGNETIC BEARING DEVICE AND VACUUM PUMP
    • 磁力轴承装置和真空泵
    • US20160290351A1
    • 2016-10-06
    • US15037071
    • 2014-10-03
    • EDWARDS JAPAN LIMITED
    • Toshiaki Kawashima
    • F04D29/058H02K7/09F16C32/04F04D29/053F04D27/00
    • F04D29/058F04D19/042F04D27/00F04D29/053F16C32/0451F16C32/0489F16C2231/00F16C2233/00F16C2300/30F16C2360/00F16C2360/45H02K7/09
    • Provided is a magnetic bearing device which allows easy initial adjustment and allows optimal bearing control to be performed by a simple algorithm without increasing a memory capacity of a controller. A pair of square multipliers and an adder acquire respective steady-state current values of a pair of electromagnets which attract a rotor shaft of a magnetic bearing not shown in opposite radial directions, square the respective steady-state current values, and add up the respective squared steady-state current values. Then, to optimally change respective currents in the electromagnets in accordance with a mounting posture of the magnetic bearing, a correction coefficient arithmetic operator calculates a correction gain instruction value acting on the electromagnets from the steady-state current values squared/added up. Then, a gain instruction value obtained by adding the correction gain instruction value to a fundamental gain of a control circuit for the electromagnets is input to a gain amplifier. The gain amplifier generates a corrected current instruction value on the basis of the gain instruction value and optimally controls the magnetic bearing.
    • 提供了一种磁性轴承装置,其允许容易的初始调整,并且通过简单的算法执行最佳的轴承控制,而不增加控制器的存储容量。 一对平方乘法器和加法器获取一对电磁体的各自的稳态电流值,该对电磁体吸引未示出的相反径向的磁性轴承的转子轴,使各自的稳态电流值平方, 平稳的稳态电流值。 然后,为了根据磁轴承的安装姿态来最佳地改变电磁体中的各个电流,校正系数算术运算器根据平稳/相加的稳态电流值计算作用在电磁体上的校正增益指令值。 然后,通过将校正增益指令值与用于电磁体的控制电路的基波增益相加而获得的增益指令值被输入到增益放大器。 增益放大器基于增益指令值产生校正的电流指令值,并最佳地控制磁性轴承。