CN85106983A - Steromotor - Google Patents

Abstract

Steromotor belongs to technical field of motors.Its rotor adopts permanent magnet to make, and stator is made up of electromagnet, constitutes photoelectric conversion device with special light barrier and transducer.Speed regulating method has adopted " pulsewidth adjustment type " or " pulse amplitude adjustment type ".The speed adjustable range of motor is big.This invention can be saved electric energy more than 1/3rd, and is easy to realize Digital Control, is easy to commutation, uses synchronously.This motor can be widely used on the electrical appliance of producing and living, and in the various automatic control systems.

Description

Steromotor

The invention belongs to electronics, electromagnetism, Electrical Motor field.

The objective of the invention is to: energy-conservation in a large number, this is because this motor has the efficient more much higher than old-fashioned motor.Next, it also has, and speed adjustable range is big, characteristics such as making things convenient for and do not increase supplementary load loss commutate.Therefore, can replace old-fashioned motor.

As follows for this motor principle and structure division:

This motor is by " rotor ", stator winding (coil I group, coil II group), light barrier (4) (5)) basic link such as control circuit formed.

" rotor " is that the permanent magnet that equates with magnet pole widths of the width of rebate by three symmetries is made, and they are anchored on the rotation axis.

" stator " is made up of three groups of I coils and three groups of II coil electromagnetism iron of being made into salient pole.Electromagnet salient pole end should be slightly less than the width of rebate of permanent magnet.

Light barrier 4 shapes are the same with the permanent magnet poles of rotor, and it is used to produce main bang; Light barrier 5 is thin slice garden dishes, and N, the S utmost point corresponding to rotor on it have different holes, are used for producing corresponding I _N. I _SOr II _N. II _SDeng photosignal.

Control circuit, be used to start and control motor by the rotating speed of selecting, turn to rotation.

The electric motor structure schematic diagram is seen accompanying drawing 1.

As shown in Figure 2.We if applying respectively on coil I and the coil II direct current of different directions, just can salient pole at stator on the corresponding pole polarity of acquisition, according to the magnetic action principle rotor angle that will turn clockwise.If we are the sense of current on the control coil in time, and constantly switch on demand, then rotor just can rotate unceasingly.

The I of different reset conditions _N, I _SOr II _N, II _SIts drive principle all is the same, and the reason that reverse also is the same, when only starting and when switching the sense of current of confession distinguish to some extent.

Master reference 6(employing LED optoelectronic switch) obtains to open a disconnected photosignal.Because the rotor rotation, light barrier 4 rotates equally, and therefore as can be known, the length of the ON time of photoelectric tube has represented that the rotation of rotor is slow, fast.

What of intake the product of the current value of input coil and the conduction time of coil current characterized.Under the certain situation of rotor moment of resistance size, the rotating speed that how much has just determined rotor of intake.

Hence one can see that: (1) photoelectric tube 6 not only can be used as the electric current commutation signal but also be the input signal of tachometric survey.(2) intake of adjustment stator winding just can be adjusted the rotating speed of motor.The way of adjusting intake has two kinds: the one, and input voltage is necessarily adjusted the conduction time of coil; The 2nd, the input voltage of adjustment coil.Can certainly both adjust simultaneously.Adjust the mode of coil electrify time, we are referred to as " pulsewidth adjustment type ".Take to adjust the mode of coil power supply voltage, i.e. " pulse amplitude adjustment type ".

These type of motor first characteristics are energy-conservation in a large number, the energy of its institute's loss only is N(or the S at rotor from the principle) set up the energy in the magnetic field of stator coil winding oneself under the magnetic field, the torque of rotor gained is then determined by the magnetic field of permanent magnet and stator electromagnet.Therefore has very high efficient.

Second characteristic is that it is easy to realize stepless speed regulation and rotating, the wide range of speed governing very much.

The 3rd characteristics are: as long as add counting circuit and correspondent control circuits, just can predesignate motor and change how much change and change what utmost point teeth, therefore can be applied to the occasion of various automatic controls.

The 4th characteristics: " rotor " and " stator " are all made linear structure just become linear electric motors, in control, can realize reciprocating motion and precision positioning, therefore can save toggle and realize reciprocating motion.Thereby improve transmission efficiency greatly.

Can be used for being used on industrial and agricultural production, the life electrical appliance replacing old-fashioned motor.Also can be used for replacing all kinds of servomotors, stepping motor obtaining higher precision, and is realized Digital Control, and is not needed number-digital-to-analog conversion apparatus.

The Figure of description explanation

Fig. 1-a structural representation

1. rotor, 2. stator, 4. light barrier 5 light barriers

6 photoelectricity master references, 7 transducers

3 rotating shafts

Fig. 1-b light barrier

5 light barriers, 9,10 loopholes (S of respective rotor, the N utmost point)

Fig. 1-C light barrier

4. light barrier

Fig. 2 drive principle figure

A) home position b) turn over a utmost point c) turn over the two poles of the earth d) turn over three utmost points

Claims (6)

1, a kind of motor that is made of rotor, stator, rotating shaft is characterized in that rotor (1) made by permanent magnet, and stator (2) is made up of electromagnet, is to drive the rotor rotation by the suction between irrotational electromagnetic field-magnetic field, repulsion.Rotor does not need to absorb energy from the outside.

2, according to the described motor of claim 1, it is characterized in that:

1., p-m rotor is to be made by permanent-magnet materials.

2., the symmetrical magnetic pole N of p-m rotor, the S pole pair of making width such as its width and notch is anchored in the rotating shaft.

3., stator is to constitute two groups of electromagnet by winding coil (2[I]), (2[II]).

4., that the electromagnetic pole of stator is made the salient pole (N, S) of symmetry is extremely right, when one group of salient pole was corresponding with the rotor notch, it is corresponding with the rotor flange that another organizes flange.

3,, it is characterized in that p-m rotor and stator are by special light barrier (4), (5) and transducer (6), (7) photo-electric control in addition according to the described motor of claim 1.

4, a kind of motor that is made of rotor, stator, rotating shaft is characterized in that speed regulating method has adopted " pulsewidth adjustment type " and " pulse amplitude adjustment type ".

5,, it is characterized in that two sensors (6), (7) being housed corresponding to special light barrier (4), (5) according to the described motor of claim 3.

6, according to the described motor of claim 3, it is characterized in that in rotating shaft, fixing an aperture widths shape and the position light barrier (4) identical fully with the rotor permanent-magnet pole, and corresponding to the S of rotor, the garden of the being in the light dish (5) that the N utmost point is distinguished perforate (9), (10).

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