The pace makes a principle into electric mechanic

When electrify of A photograph winding (with volts d.c. excitation) when; Form magnetic pole of A photograph stator () of AA direction magnetic field, generation turns over stress, the point of view with attract rotor to had turned proper, make rotor tine and denticulation of magnetic pole of A photograph stator right neat. 2.

Cut off the power when A photograph winding, when electrify of B photograph winding, form magnetic pole of B photograph stator (BB directional magnetic field) , generation turns over stress, attract rotor to arrange hour hand to had turned 3° , make rotor tine and denticulation of magnetic pole of B photograph stator right neat. 3.

If ………… of analogize of in proper order controls circuit to keep entering electric machinery by pace of A-B-C-A… sequence control of each photograph winding cut off the power, the pace keeps arranging hour hand roll into the rotor of electric machinery; Be like A-C-B-A… of electrify order instead, the rotor that the pace enters electric machinery will be anticlockwise rotational. Means of this kind of electrify calls three-phase 3 take electrify kind; Right now every change the electrify position of stator winding, rotor has turned 3° . If control circuit to keep entering electric machinery by pace of A-AB-B-BC-C-CA-A… sequence control of each photograph winding cut off the power, means of this kind of electrify calls three-phase 6 take electrify kind. Should turn to be mixed for A from A photograph electrify B at the same time when electrify, attract of the magnetic field that rotor tine will be produced at the same time by A photograph winding and the magnetic field that B photograph winding produces jointly, rotor tine is forced to stop between A and B two-phase magnetic pole, rotor has turned 1.

5° . When at the same time by A and B two-phase electrify turns when be B photograph electrify, rotor rotates along the clockwise again 1.

5° , make rotor tine and B photograph magnetic pole right neat. …… the rest may be deduced by analogy. In three-phase 6 when sending open telegram, every change the electrify position of stator winding, rotor has turned 1.

5° . With three-phase 3 pat electrify means photograph to compare, can make every time corner is contractible half. Every change the electrify position that the pace takes winding of electric machinery stator, one when its rotor has turned defines point of view, call a pace to enter the A of step pitch horn of electric machinery. The computation of A of step pitch horn is formulary: Among them, m is the photograph number of stator winding, z is the tine number of rotor, k is electrify means coefficient; When M photograph M sends open telegram, k=1; When M photograph 2m sends open telegram, k=2 (2) , situation of type of split phase of 5 stator, axial, reaction takes 5 looks the stator that principle of electric machinery job introduces a pace to enter electric machinery and rotor are divided in axial it is 5 paragraphs, each paragraphs form winding of core of independent one photograph stator, stator and rotor; Form of core of each paragraphs of stator is like internal gear, by silicon steel piece fold; On each paragraphs of stator distributing equably in circumferential direction, stagger between each other 5 pitch of 1 ／ ; Form of each paragraphs of rotor is like external gear, also by ferrosilicon piece fold; Each paragraphs of rotor ages each other are pretty good. Be in when the setting stator core is annular when the stator winding electrify inside case, form one annular winding, form the lines of force that shows in the graph. If control circuit to keep entering electric machinery by pace of A-B-C-D-E-A-… sequence control of each photograph winding cut off the power, means of this kind of electrify calls 5 phases 5 send open telegram; If control circuit to keep entering electric machinery by pace of sequence control of AB-ABC-BC-BCD-CD-CDE-DE-DEA-EA- EAB-AB … of each photograph winding cut off the power, means of this kind of electrify calls 5 phases 10 send open telegram; The computation of A of step pitch horn still can use afore-mentioned computational formula. Brief summary: 1.

The pace gets control of pulse electric current into electric machinery, the angular displacement direct ratio of rotor the amount at inputting pulse, the angular velocity direct ratio of rotor the frequency at inputting pulse, the direction of rotation of rotor depends on the electrify of stator winding is ordinal. 2.

The pace has certain step pitch error into electric machinery, but without accumulative total error. 3.

The electric current that if maintain,controls winding is constant, criterion the pace can stop in some position to be not moved into electric machinery. CNC Milling