Four-magnetic-circuit symmetric excitation rectangular open magnetic field type electromagnetic vibration table magnetic circuit structure with magnetic field tracking compensation
A tracking compensation, electromagnetic vibration technology, applied in vibration testing, fluid using vibration, testing of machine/structural components, etc., can solve the problems of difficult to guarantee assembly accuracy, limited magnetization effect, difficult processing, etc., to reduce processing and cost. The difficulty of assembly, the simple and reliable magnetic circuit structure, the effect of high linearity index
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[0038] The specific implementation manner of the present invention will be described in detail below with reference to the accompanying drawings, and examples will be given.
[0039] A four magnetic circuit symmetrical excitation rectangular open magnetic field electromagnetic vibrating table magnetic circuit structure for magnetic field tracking compensation, consisting of a permanent magnet 1, a central yoke 2, an inner yoke 3, an outer yoke 4, an end yoke 5, and a coil bobbin 6 It is composed of a working coil 8 and has an axisymmetric structure as a whole. The cross-sections of the permanent magnet 1, the central yoke 2, the inner yoke 3, the outer yoke 4 and the end yoke 5 are all rectangular, and the cross-section of the coil bobbin 6 is a square shape. The four permanent magnets 1 are installed symmetrically between the two ends of the two outer yokes 4 and between the two end yokes 5, and the same magnetic poles of the two permanent magnets 1 at the two ends of the same...
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