CN2049393U - One-way pulse type electric-dynamic force transducer - Google Patents

Abstract

The utility model discloses the design principle, the structure and the implementation method of a one-way pulse type electricity-force transducer. The utility model is characterized in that directions of an electromagnetic field and a permanent magnetic field are mutually reverse, and an electromagnetic coil is driven to work by unidirectional pulse currents. One side of the end surface of an iron core (3) is provided with a permanent magnet (8) which is arranged in the reverse direction of the direction of a magnetic field of the electromagnetic field. An electromagnetic coil (11) connected with a pulse circuit (9) is arranged on a coil skeleton (2). The utility model can be used by being matched with a computer-controlled system and has the advantages of strong memory functions, high sensitivity, low power consumption, small size, etc. The utility model can be widely used for control systems of various large scale actions.

Description

One-way pulse type electric-dynamic force transducer

The utility model relates to a kind of performer of changing voluntarily, is the invention about the single way pulse mode power-force transducer, is specially adapted to the automation control of extensive action.

Existing power-force transducer, unidirectional electrical flow pattern monostable and two kinds of fundamental types of bidirectional current type bistable state are arranged, the former only has a magnetic field, as screwed pipe or cypress mould assembly electromagnet etc., and drive with unidirectional current, its deficiency point is that power consumption is big, and the low and memoryless function of sensitivity is unsuitable for doing extensive action control.Bidirectional current type bistable state power-force transducer, electromagnetic field and permanent magnetic field with two magnetic directions identical (being the heteropolarity face), and use forward current and reverse current (being bidirectional current) to drive respectively, though this transducer has memory function, but owing to start sensitivity, low precision, supporting with it electronic device is many and volume is increased, thus in same control system, can not use in a large number, can only on a small scale and the less demanding control of sensitivity used.At present, a kind of machinery-electromagnetic type power-force transducer is arranged abroad, promptly on each transducer, be equipped with a cover mechanical device, to satisfy the automation control of extensive action, this class converter structure complexity, bulky, involve great expense and the failure rate height, thereby effect is also not satisfactory.

Task of the present utility model is that a kind of energy and the matching used high speed of computer control system will be provided, and high sensitivity also has memory function, low in energy consumption, the volume I single way pulse mode power-force transducer as extensive automation of motions control.

The utility model adopts electromagnetism-magneto electricity-Li conversion regime, unlike the prior art be the magnetic direction oppositely (being the same polarity face) each other of electromagnetic field and permanent magnetic field, this design has broken through can only the repel each other circle of the electromagnetic principle that can not inhale mutually of two opposing magnetic fields.Its implementation is with the drive current of unidirectional pulse electric current as solenoid, and produce an electromagnetic field that direction is opposite with the permanent magnetic field direction, at this moment the actuating length of electromagnetic core is scolded for not scolding a suction one, specifically, when iron core is in up stroke, there is electromagnetism suction-inertia suction-permanent magnetism to inhale three phases; When iron core is in down stroke, have on the permanent magnetism to scold-electromagnetism is following to be inhaled two stages.Above-mentioned principle is that distance when iron core and permanent magnet two ends is during greater than 3mm, be tending towards infinitely small by the electromagnetic field of unidirectional pulse driving generation and the opposing magnetic field repulsion of permanent magnetic field, at this moment, the screwed pipe magnetic force that solenoid produced will drive iron core and advance fast to permanent magnet; When the distance at iron core and permanent magnet two ends was equal to or less than 3mm, even solenoid outage electromagnetism disappears, iron core will be inhaled after the permanent magnet magnetization after permanent magnet is advanced to certain distance mutually by inertia, to finish up stroke.When driving pulse that solenoid obtains again, the screwed pipe magnetic force that produces at its trailing space and the opposing magnetic field repulsion of electromagnetic field and permanent magnetic field will drive iron core simultaneously and get back to stable state just, to finish down stroke.

Contribution of the present utility model is energy and the supporting use of computer control system, thereby strengthened memory function, having improved starting sensitivity and greatly reduced power consumption, compressed volume and cost, is the performer that a kind of desirable extensive automation of motions is controlled.

Below, will be in conjunction with the accompanying drawings, the utility model is further described and provides implementation method.

Accompanying drawing 1 is a structure principle chart of the present utility model.

With reference to accompanying drawing 1: the utility model is made up of shell (1), coil rack (2), iron core (3), power guide rod (4), guide hole absorbing packing ring (5), vibration-damping sheet (6), end cap (7) and permanent magnet (8), impulse circuit (9), buffer amplifier (10), solenoid (11) etc.Its main points are the sides at iron core (3), and a permanent magnet (8) that oppositely is provided with the electromagnetic field direction is arranged; On coil rack (2), a solenoid (11) that connects with impulse circuit (9) is arranged.Operation principle of the present utility model is: prestart, transducer is in the A stable state, the end of iron core (3) is positioned at the A cross section, the magnetic direction of permanent magnet (8) is N ← S, when the E of driving pulse (this example is a positive pulse) input solenoid (11) after buffer amplifier (10) amplifies that impulse circuit (9) sends holds, produce the electromagnetic field S → N and a screwed pipe magnetic force of one opposite with the permanent magnetic field direction (being the same polarity face promptly) with permanent magnet (8) , because in the moment of energising, the distance at iron core (3) and permanent magnet (8) two ends is greater than 3mm, at this moment, the repulsion of two opposing magnetic fields can be ignored, so iron core (3) will be at screwed pipe magnetic force

Effect under, advance to the right fast.Need only strobe pulse width rightly, make when iron core (3) is advanced to B cross section (effective magnetic field repulsion distance), solenoid (11) outage back electromagnetism disappears, iron core continues to be advanced to a certain cross section between BC because of inertia, and at this moment iron core will be magnetized by permanent magnet and produce to be drawn onto mutually behind the magnetic field N ← S of identical with the permanent magnetic field direction (promptly heteropolarity face) each other and reach the C stable state.When solenoid regains driving pulse, can produce an electromagnetic field opposite again with the permanent magnetic field direction, simultaneously, will produce a screwed pipe magnetic force in the space of solenoid afterbody , therefore at screwed pipe magnetic force

In the time of with the repulsion of two opposing magnetic fields effect down, iron core (3) advances left rapidly and gets back to the A stable state.

Shell of the present utility model (1) is the irony housing, power guide rod (4) is fixed in the end of iron core (3), solenoid (11) is on coil rack (2), one end ground connection, the other end connects with buffer amplifier (10) and impulse circuit (9), for the self-induced e.m.f that prevents to produce, between earth terminal and input, be provided with a diode D because of outage; Impulse circuit (9) can be by interface by computer control, and permanent magnet (8) is fixed on end face one side of iron core (3) by vibration-damping sheet (6) and end cap (7), and vibration-damping sheet (6) is for to be made by flexible material, and guide hole absorbing packing ring (5) is made by flexible plastics.The number of turn of the magnetic field intensity of permanent magnet (8) and solenoid (11) can determine that the size of unidirectional pulse electric current (width) can be determined by the computer adjustment according to the size of controlling object and conversion power.

Claims (1)

1, a kind of single way pulse mode power-force transducer, comprise shell (1), coil rack (2), iron core (3), power guide rod (4), guide hole absorbing packing ring (5), vibration-damping sheet (6), end cap (7), it is characterized in that end face one side, a permanent magnet (8) that oppositely is provided with the magnetic direction of electromagnetic field is arranged at iron core (3); On coil rack (2), a solenoid (11) that links with impulse circuit (9) is arranged.

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