By Gerhard Schweitzer (auth.), Eric H. Maslen, Gerhard Schweitzer (eds.)
Compiling the services of 9 pioneers of the sector, Magnetic Bearings - conception, layout, and alertness to Rotating equipment deals an encyclopedic examine of this swiftly rising box with a balanced mix of business and educational views. each part of the expertise is tested intimately, starting on the part point and continuing via an intensive exposition of the layout and function of those structures. The roster of authors boasts a regular of twenty-five years of labor constructing magnetic bearing know-how - a really unparalleled pool of experience.
The ebook is equipped in a logical model, beginning with an outline of the expertise and a survey of the variety of purposes. A history bankruptcy then explains the relevant recommendations of energetic magnetic bearings whereas warding off a morass of technical information. From the following, the reader maintains to a meticulous, cutting-edge exposition of the part applied sciences and the way within which they're assembled to shape the AMB/rotor procedure. those procedure versions and function targets are then tied jointly via wide discussions of regulate tools for either inflexible and versatile rotors, together with attention of the matter of process dynamics id. assisting this, the problems of approach reliability and fault administration are mentioned from a number of beneficial and complementary views. on the finish of the booklet, quite a few distinctive ideas and structures, together with micro-scale bearings, self-bearing automobiles, and self-sensing bearings, are placed forth as promising instructions for brand new examine and development.
Newcomers to the sphere will locate the fabric hugely obtainable whereas veteran practitioners can be inspired through the extent of technical element that emerges from a mixture of subtle research and insights gleaned from many collective years of functional adventure. An exhaustive, self-contained textual content on lively magnetic bearing expertise, this e-book may be a middle reference for someone looking to comprehend or increase platforms utilizing magnetic bearings.
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Extra info for Magnetic Bearings: Theory, Design, and Application to Rotating Machinery
The examples, shown in the Figs. 22 demonstrate recent products and developments, and an outlook on ongoing research projects. Fig. 12. Pipeline compressor HOFIM from MANTurbo/S2M, 6 MW, 9000 rpm, integration of direct drive and magnetic bearing in the turbomachine. The ﬁrst version, MOPICO, is described in  (image courtesy MANTurbo) 1 Introduction and Survey 19 Fig. 13. Turbo-molecular pump suspended in active magnetic bearings. HiMag 2400 R , delivery 2100 l/sec, speed 29400 rpm (photo courtesy Pfeiﬀer VacuumMecos) Fig.
Elektrotechn. , 59:391–395, 1938. 26 Gerhard Schweitzer 30. W. Klimek. A contribution to the measurement technique using electromagnetic suspension. Forschungsbericht 72-30, DLR, 1972. 31. R. Koehler. Transrapid - development and application status. In Proc. 8th Int. Symp. on Magn. Susp. Technol. (ISMST), pages 23–28, Dreden, Sept. 2005. 32. N. Koshizuka and F. Ishikawa et al. Progress of superconducting bearing technologies for ﬂywheel energy storage systems. Physica, C 386(444-450), 2003. 33.
7 the time T between the zero-crossing points is constant, even if the oscillation amplitude becomes smaller. It is important to mention, however, that this does not hold for the time between two relative amplitude maxima. The time T can, therefore, only be called the “pseudo period” of the damped system, and, correspondingly, ω can be called the “pseudo angular frequency”. Despite this fact one speaks, in practice, most often of the eigenfrequency ω and of the eigendamping σ of the system. 3) we have set up the desired control force of a magnetic bearing system in accordance to a simple mechanical spring-damper system.