By Gerhard Schweitzer (auth.), Eric H. Maslen, Gerhard Schweitzer (eds.)
Compiling the services of 9 pioneers of the sector, Magnetic Bearings - concept, layout, and alertness to Rotating equipment bargains an encyclopedic examine of this quickly rising box with a balanced combination 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 standard of twenty-five years of labor constructing magnetic bearing expertise - a really unheard of pool of experience.
The booklet is geared up in a logical style, beginning with an summary of the expertise and a survey of the diversity of functions. A historical past bankruptcy then explains the significant ideas of energetic magnetic bearings whereas fending off a morass of technical information. From right here, the reader keeps to a meticulous, cutting-edge exposition of the part applied sciences and the way during which they're assembled to shape the AMB/rotor procedure. those approach versions and function pursuits are then tied jointly via broad discussions of keep watch over tools for either inflexible and versatile rotors, together with attention of the matter of method dynamics id. assisting this, the problems of process reliability and fault administration are mentioned from numerous beneficial and complementary views. on the finish of the booklet, a number of specific thoughts and structures, together with micro-scale bearings, self-bearing vehicles, and self-sensing bearings, are positioned forth as promising instructions for brand spanking new examine and development.
Newcomers to the sphere will locate the fabric hugely available whereas veteran practitioners can be inspired through the extent of technical aspect that emerges from a mixture of refined research and insights gleaned from many collective years of useful adventure. An exhaustive, self-contained textual content on energetic magnetic bearing know-how, this booklet might be a middle reference for an individual trying to comprehend or strengthen structures utilizing magnetic bearings.
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Additional info for Magnetic Bearings: Theory, Design, and Application to Rotating Machinery
Progress of superconducting bearing technologies for ﬂywheel energy storage systems. Physica, C 386(444-450), 2003. 33. P. Kummeth, W. Nick, and HW. Neum¨ uller. Development of superconducting bearings for industrial application. In H. Bleuler and G. Genta, editors, Proc. 10th Internat. Symp. on Magnetic Bearings, page Keynote, Martigny, Switzerland, Aug. 2006. 34. M. Lang. Berechnung und Optimierung von passiven permanentmagnetischen Lagern f¨ ur rotierende Maschinen. PhD thesis, TU Berlin, 2003.
These important features are possible without the need for any additional instrumentation. It is the sum of all these features and advantages that render active magnetic bearings so attractive for many demanding industrial applications. 3 PD and PID Control In Sect. 13). Such a control law is well-known under the name PD control. 13b) PD Control: Selection of Stiﬀness and Damping The parameters P and D of the above control law are determined by choosing appropriate values for stiﬀness k and damping d of the closed-loop system.
15. Turboexpander-generator with magnetic bearings for energy recovery from natural gas, 450 kW, 32000 rpm, rotor mass 112 kg, rotor length 1100 mm, bearing diameter 110 mm, high-speed motor with carbon ﬁber reinforcement,  terminal box guide blade adjusting motor pressure-containing cable lead-through pressure-containing machine housing water-cooled rectifier carbon fiber bandage gas inlet synchronous generator magnetic bearing unit (radial and thrust bearing) auxiliary bearing unit turbine gas outlet Fig.