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Download Magnetic Bearings: Proceedings of the First International by Atsushi Nakajima (auth.), Prof. Dr. G. Schweitzer (eds.) PDF

By Atsushi Nakajima (auth.), Prof. Dr. G. Schweitzer (eds.)

Magnetic Bearings are bearings the place the suspension forces are generated magnetically with none touch. the benefits to trendy equipment are visible: no mechanical put on, no lubrication, strength for prime rotor pace, accuracy, and excessive dynamic functionality, new constructional suggestions to a classical challenge in computer dynamics. the conclusion of such bearings is in quick growth. Examples for software components are turbomachinery, centrifuges, vacuum concepts, laptop software spindles, chemical undefined, scientific units, robotics, excessive pace drives, spacecraft apparatus, con tactless actuators, vibration isolation. The Symposium is demonstrating the present cutting-edge during this constructing box of mechatronics, displaying genuine learn efforts, reporting on purposes within the a variety of components, and discussing open questions. the most objective of the Symposium has been to set up a standard details foundation for individuals engaged on magnetic bearings. it's going to element to promising parts, and it'll support to facilitate judgements on examine and improvement initiatives, and on investments for applications.

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Read or Download Magnetic Bearings: Proceedings of the First International Symposium, ETH Zurich, Switzerland, June 6–8, 1988 PDF

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Additional info for Magnetic Bearings: Proceedings of the First International Symposium, ETH Zurich, Switzerland, June 6–8, 1988

Sample text

IDS ," ......... ,,,......... r. . ~~ 100 ms -",o' r-\. ,... "-1 Fig. 8 Step Responses of the Tilt Axis at Different Speed a: without decoupling, b: with decoupling The influence of such a decoupling on the overall satellites stability must be considered separately. Conclusion Two magnetic bearing wheels of low profile design have been built, a 3-axis active version and a 5-axis active one. Both provide a vernier gimballing capability due to electrodynamically controlled tilt axes. This is of interest with respect to the increasing attitude control requirements of modern spacecraft.

Compared with rotating permanent magnets, steel collars have the essential advantages of high yield strength, high Curie-temperature and corrosion-resistance. The additional fact that no overhanging bearing parts between rotor and stator are needed permits substantial freedom in the rotor design. Complete bearing system For the entire suspension of the moving body a second coaxial bearing is needed in order to constraint all radial degrees of freedom (Figure 3). This second bearing can be of identical construction as the one described above [3].

J_ . J ~ t ~. IDS ," ......... ,,,......... r. . ~~ 100 ms -",o' r-\. ,... "-1 Fig. 8 Step Responses of the Tilt Axis at Different Speed a: without decoupling, b: with decoupling The influence of such a decoupling on the overall satellites stability must be considered separately. Conclusion Two magnetic bearing wheels of low profile design have been built, a 3-axis active version and a 5-axis active one. Both provide a vernier gimballing capability due to electrodynamically controlled tilt axes.

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