| 摘要 |
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 (28) 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 (24), a bushing (22) coaxial with the coil support for attachment to the linear motor shaft (12), a plurality of radial ribs (26) connecting the coil support to the bushing and a coil having multiple turns wound circumferentially around the coil support. The coil support (24) is subdivided by axial gaps (60) into at least two separate coil support elements (24a-24d), 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. |
