Wide bandwidth linear motor system

Details Wide bandwidth linear motor system Wide bandwidth linear motor system

1986-03-26

1988-06-14

Duggan, Donovan F.

Electricity: motive power systems

Linear-movement motors

381158, 310 13, H02K 4100

Patent

active

047514370

ABSTRACT:
A wide bandwidth linear motor system suitable for high performance applications such as driving the tuning plunger of a magnetron oscillator. The linear motor includes a coil assembly with a structure which suppresses secondary resonances, thereby permitting the linear motor to be used in a wide bandwidth servo control loop. The coil assembly includes a cylindrical coil support, a bushing coaxial with the coil support for attachment to the linear motor shaft, a plurality of radial ribs connecting the coil support to the bushing and a coil having multiple turns wound circumferentially around the coil support. The coil support is subdivided by axial gaps into at least two separate coil support elements, each connected by a radial rib to the bushing. Resonance of the coil support and the coil is suppressed by the separate coil support elements and the lossy connection therebetween.

REFERENCES:
patent: 3194992 (1965-07-01), Brown
patent: 3439198 (1969-04-01), Lee
patent: 3487241 (1969-12-01), Carter
patent: 3751693 (1973-08-01), Gabor
patent: 4144466 (1979-03-01), Hatch

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