Study without bearing electric machinery and apply foreground

Chiba realizes magnetoresistive electric machinery first without bearing technology. 1993, the R of engineering college of federal of Su Li world.

Schoeb realizes those who communicate electric machinery not to have bearing technology first. Obtain actual application without bearing electric machinery, decisive breakthrough was 1998 development goes the Balaida of engineering college of federal of Su Li world without synchronism of bearing permanent magnetism chip electric machinery, electric machinery structure is simple, reduced control system cost greatly, value of very big application is had in a lot of domains. 2000, the S of engineering college of federal of Su Li world.

Sliber development goes without bearing single-phase electric machinery, considering to one pace advances on the history without bearing electric machinery again, reduced the cost that controls a system, make applying actually without bearing electric machinery can think not just, and be economy. The electric machinery that resembles mechanical bearing bearing without bearing electric machinery is euqally simple, electric control system is not complex, use in a lot of domains without bearing electric machinery also very economy. We think to be in before long in the future, this kind of technology will obtain wide application in China. Having characteristic of bearing electric machinery and application not to have bearing electric machinery is the similar sex that produces electromagnetism force principle according to magnetism bearing and electric machinery, install the winding that radial load produces in magnetism bearing on electric machinery stator, through solving Ou control realizes the independent control of pair of electric machinery torsion and force of radial in suspension. Have bearing of magnetism of magnetism in suspension without bearing electric machinery all advantages, need avoids maintenance, macrobian destiny to go, the transmission of asepsis, free from contamination and poisonous and harmful liquid or gas is not to have circumstance of representative application of bearing electric machinery. Got is as follows applied at present. 1.

Semiconductor industry is in etch, make board, clean or need to use caustic chemical liquid in the treatment process such as polishing, product quality depends on greatly chemical liquid quality, the liquid carries pump is a crucial link. Wait for cankerous chemical liquid like acerbity fluid, organic dissolvent, pump must free from contamination is transmitted reliably, and pump should be had fight corrode and be able to bear or endure the requirement of constant temperature. Traditional pneumatic and chip pump life are brief, great majority is able to bear or endure lukewarm highest only 100 ℃ are controlled, athletic a powerful person and chip still can arise a few atomic, the liquid is transmitted also existing inhomogenous pulsatile, affected craft to tackle quality. Adopt the limitation that in sealing pump to be able to solve a tradition to transmit without bearing report secret, exists, greatly contented and accurate semiconductor device produces craft demand. Current, power is 300W without bearing electric machinery sealed pump has gotten applied in semiconductor industry. 2.

Below the abominable condition such as environment of chemical domain radioactivity or environment of high temperature radiate, with without bearing electric machinery sealed pump undertakes flotsam is handled, can solve the difficult problem that mechanical bearing wears away and maintains. In chemical industry, right effective and sealed the demand that transmit and produces a system rises further, the sealed pump with traditional sealed runner shaft, mechanical bearing needs to lubricate, cause as a result of sealed invalidation according to reporting the breakdown of 80% is, 20% it is bearing, join and other breakdown. For safe production, spare environmental pollution, use sealing pump without bearing report secret is optimal choice. Current, engineering college of federal of Su Li world and cooperation of Sulzer pump company finished power to be 30kW without bearing the development of sealed pump prototype and test work, entered try moving phase. 3.

Heart of life science domain is life always motive, once malfunction hard repair. Use artificial heart part or replace heart function to make the good news that life of heart disease patient continues entirely. The hematic pump that uses mechanical bearing can arise to chafe and give out heat, make hematic cell damaged, cause haemolysis, cruor and thrombus, endanger patient life even. The does not have drive of electric machinery of bearing permanent magnetism blood pump of engineering college of federal of Su Li world and success of Levitronix company development and can transplant the heart left ventricle inside human body assists device to had been in clinical medium applying. Research and applied foreground our country begin train of magnetism in suspension and magnetism bearing research old, from 20 centuries 90 time later period, jiangsu university, Shenyang industry university and Nanjing aerospace university got national science foundation is aided financially early or late, began study the work without bearing electric machinery, a few result were obtained in theory and face of true proved recipe. Is Jiangsu university electric information project institute bright red? Qiu Yurui person J of engineering college of federal of Su Li world.

Hugel teachs those who waited to begin power to be 4kW jointly not to have synchronism of bearing permanent magnetism to electric machinery studies and use the job, captured sensor detects, the crucial technology difficult problem such as power loss, successful development goes the first power to be 4kW without chip of bearing permanent magnetism electric machinery, predict to will wait in chemical industry, semiconductor industry 2004 get applied. The country waits in the United States, Japan, be in without bearing electric machinery the domain such as industry of industry of life science, pharmacy, chemical industry industry, semiconductor, food industry got applied. Develop further as our country economy, the drive that in a lot of special electric drive the domain is sure to change a tradition and transmission means, quality of expensive to carrying product, reduce it is cost, important to reduce pollution to will rise action. Accordingly, market of very big potential application is had without bearing electric machinery in our country, begin the research that does not have bearing electric machinery and application actively to have reality and far-reaching sense. CNC Milling