外国语考研翻译--步进电机的工作原理考研.doc

() Nikravesh P E. Mechanical Engineering Design. McGraw-Hill2006 1.2. 1 ,101/32/3,A1B21/3C32/3A5AA512ABC1ABAC2B1/33C1/34A-1/3=2/3CAB3C1/34A1/3ABC4A1/3ABCA41AABCA1/3,ACBAA-AB-B-BCC-CA-A1/31/61/31/121/24m1/m,2/m(m-1)/m,13Fd/d S =Br*S BrSFL*D*BrLD Br=N?I/R N?IR=* 1A-AB-B-BC-C-CD-D-DA-A.C=,D=.2 42BYG(BYG)57BYG86BYG110BYG70BYG90BYG130BYG3NSmnAB-BC-CD-DA-AB A-AB-B-BC-C-CD-D-DA-A.=360J*50=360/50*4=1.8=360/50*8=0.9 4 4.1/*100%5%15%3;1 4.8180-250pps1.8400pps0.9 4.9AB-BC-CD-DA()DA-CA-BC-AB() 1 CPU0.3-0.42 ,1.8,0.9AB-BC-CD-DA-AB,1.8AB-B-BC-C-CD-D-AB,(0.9)3 SHCP CPUOPTO CPU+5VFREE CPUDIR CPUVCC GND A B 4 AB 10.36/0.720.9/1.81.5/3 2 2-33 4 P= ?M =2?n/60 P=2nM/60PnM?P=2fM/400()fPPS()1-10000.96666PPS1000-3000PPS(0.9)2312V12V 57BYG24V-36V86BYG50V,110BYG80V1212V 456,578600PPS0.992Electrical work principles one stepFirst PrefaceWalk into the working principle step of generator to enter generatoris will electrical pulse signal the open loop that changes angulardisplacement or displacement of the lines into control element. Under notoverloaded condition the rotational speed of generator , the location thatstops depend on pulse number and the frequency of pulse signal, and theinfluence that does not get load change gives generator to add a pulse signal,generator has turned a angle of step pitch. The existence of this linearrelation, add step into generator to have only the error of periodicity andwait for characteristic without accumulated error. Make enter generator inthe control fields such as speed and location with step to control changevery simple.Though, step had been applied into generator extensively, but walk intogenerator and can not resemble the ordinary machine of direct current, themachine of alternating current is used under routine. It must drive fromdouble-loop shape pulse signal and power the composition control systematicsides such as circuit can use. Therefore enter generator with good step butis not easy matter, it is concerned with a lot of professional knowledgessuch as machinery, generator, electron and computer.Now, the production manufacturer that walks into generator is reallya lot of, but have professional technology people, the manufacturer thatcan develop independently and develops is very few , the most ofmanufacturers a, 20 persons, most basic equipment of company has no. Is inonly a kind of blindly copy stage. This gives user, cause a lot of troublesin product type selecting and use. Sign in above-mentioned condition, wedecide to enter generator with extensive inductor type step, is regular. Narrate its basically working principle. Look over can for masses of userin type selecting and use, and overall improvement help from time to tome.Second Inductor type step enter generator working principle(1) reaction type step enter generator principle because of reactiontype step enter generator working principle comparison simple. Downstairs,narrate three-phase reaction type step into generator principle first.1. . structure:Generator rotor even distribution a lot little tooth, stator tooth has3 excitations to wind hindrance, its geometry axis is differentiated inproper order with rotor tooth axis stagger.0 1/3 , 2/3 , ( the distance between adjacent two rotor toothanises is pitch with show ), A and tooth 1 are relatively even, B andtooth 2 stagger towards the right 1/3 , C and tooth 3 stagger towards theright 2/3 , A Yu Chi 5Xiang Dui Qi , ( A is A , tooth 5 is tooth 1 )Downstairs decide rotor spread out picture:2. , spin:If A is interlinked, is electrical, B, C appearance do not startelectricity, because of the role of magnetic field tooth 1 and A for even,(rotor do not get any force below with). If B is interlinked , is electrical ,A, C appearance do not start electricity , tooth 2 should with B for even,right now rotor have moved towards the right 1/3 , right now tooth 3 andC deflection is 1/3 , tooth 4 and A deflection ( - 1/3 ) = 2/3 .If C is interlinked , is electrical , A, B appearance do not start electricity ,tooth 3 should with C for even, right now rotor have again moved towards the right 1/3 , right now tooth 4 and A deflection is 1/3 for even.If A is interlinked , is electrical , B, C appearance do not start electricity ,tooth 4 and A for even, rotor have again moved towards the right 1/3 suchprocess A, B, C and A difference start electricity state, tooth 4 ( formertooth 1 a toothed ) move A appearance, generator rotor has turned a pitchtowards the right, if press A, B, C and A continuously start electricity ,generator is each to walk ( each pulse ) 1/3 , spin towards the right.If press A, C, B and A start electricity, generator turns on thecontrary.Thus it can be seen: Speed and the location of generator from conductivefrequency (pulse number) with frequency become 11 corresponding relation.And direction is decided by conductive order.However stem from for moment, steady, noise and decreasing the aspectconsiderations such as angle. Often adopt A-AB-B-BC C-CA-A this kind ofconductive state, so will originally each step 1/3 change is 1/6 . Passthrough the different combination of 2 phase currents even, make it 1/3 change is 1/12 , 1/24 , this is the basically theoretical basis thatgenerator divides into drive carefully.Do not not put to the market: On generator stator have m appearanceexcitation wind hinderance, its axis is differentiated with rotor tooth axisdeflection 1/m, 2/m ( m-1 )/m, 1. And conduct electricity press certainappearance order generator for can pros and cons turn controlled - - thisis step the physical condition that spins into generator. So long asaccording with this condition, we can make any step of appearance intogenerator theoretically, wait for various consideration in view of cost,on market normally with 2, 3, 4 and 5 appearance is.3. . moment:Generator once start eclectricity , between deciding rotor will producemagnetic field ( magnetic flux quantity ) to pawn rotor and stator staggercertain angle produce force F with ( d / d ) its S magnetic flux of direct ratio quantity = Br * S Br is magnetism dense, S is Dao magneticarea F and L * D * Br L of direct ratio is core effective length, D is rotordiameter Br = N*I/R N*I installs circle several( current multiply circlenumber) R for excitation to wind hinderance, is magnetoresistive.Moment = force * radius moment and generator effective volume * installcircle number * magnetism dense become direct ratio ( consideration linearstate ) therefore, generator effective volume is the more big, it is bigthat excitation install circle to count, decide rotor between air gap themore little, generator moment is the more big, otherwise also Ran.( 2 ) inductor type step enter generator1. . characteristic:Inductor type step is compared with into the reaction type step ofgenerator and tradition into generator, on structure rotor add havepermanent magnet, with the working point that offers soft magnetic material ,and stator excitation need to offer the magnetic field of change only andneed not offer magnetic material work point consume can, therefore thisgenerator efficiency has little current high, give out heat to low. Becauseof the existence of permanent magnet, this generator has , is more strongto turn over electromotive force, its self damping role makes it be beingsteady in operation course fairly , has low noise , the vibration of lowfrequency little.Inductor type step is certain into generator to be able to regard asat low speed synchronous generator on kind level. A 4 appearance generatorcan make 4 appearance operation, can also make 2 appearance operation. ( must drive with ambipolar voltage ), and reaction type generator can not be such.For instance:4 appearance, 8 appearance operation ( A-AB-B-BC-C-CD-D-DA-A ) canadopt 2 completely 8 appearance racket run modes. Do not not discover itscondition is C =, D =. A 2 4 and the internal winding of appearance generatorappearance generator complete consisten