CN86102880A

CN86102880A - Multipath magnetic flow ratio control method and application thereof

Info

Publication number: CN86102880A
Application number: CN 86102880
Authority: CN
Inventors: 陈竞哲
Original assignee: Individual
Current assignee: Individual
Priority date: 1986-04-18
Filing date: 1986-04-18
Publication date: 1987-10-28

Abstract

The multi-path magnetic flow ratio control method belongs to the Electromagnetic Control technical field, is specially adapted to carry out in the automation field multi-channel electric signal proportional control and uses products such as this control principle manufacturing multi-path magnetic ventilating controller, electric welding machine, pressure regulator.Its control method is magnetic conductor---the magnetic drum that the joining place setting at magnetic conjugate of magnetic conductive core can rotate around the axis, be provided with the non-magnetic conduction district that arranges vertically in the circumference of magnetic drum, control the magnetic flux of controlled yoke by the magnetic conduction cross section that changes yoke, thereby reach the purpose of control.The product of using manufacturing of the present invention has advantages such as simple in structure, that adjustment is level and smooth, added losses are little.

Description

Multipath magnetic flow ratio control method and application thereof

The invention belongs to a kind of method of in the Electromagnetic Control technical field multipath magnetic flow being carried out proportional control, and be applicable to the proportional control of carrying out multiple signals in the automation field, use this method and can make product; As pressure regulator, electric welding machine and multipath magnetic flow control, detecting instrument etc.

In the prior art field multipath magnetic flow more than two tunnel is carried out proportional control and still do not have practical ways, though the proportional control for two-way magnetic flux has some simple methods, the flux regulator of A.C. welder as shown in Figure 6 transfers " contactless autocoupling type pressure regulator " (its control principle sees " Soviet Union's invention 860152 " for details) of stream method and Fig. 7 but the former is close between road iron core and main flux road iron core and has air gap, its magnetic resistance is always worked energetically the main magnetic circuit magnetic resistance, Gu regulating effect is not obvious; Though the latter regulates obviously but also exists:

1. magnetic resistance increase in main flux road is finished by reducing the magnetic conduction cross section, belongs to linear regulation; Reduce to be that air gap realizes by dwindling and be close to the road magnetic resistance, belong to non-linear adjusting.The magnetic resistance summation changes for energized circuit, thereby causes the interior magnetic resistance of a certain section bigger than normal, and exciting power increases, and added losses increase, and the field copper design capacity also will increase.

2. no matter all can't carry out the proportional control of multipath magnetic flow from structure or non-linear control characteristic.

The invention provides a kind of multipath magnetic flow ratio control method and use the product that this method is made, its basic structure and principle are seen Fig. 1, it (is three yokes (1) among Fig. 1 that its conducting magnet core has a plurality of yokes, (6), (8)), be provided with the magnetic conductive part magnetic drum (5) of the cylindrical shape that can rotate around central shaft at the joining place of all yokes, shade in the circumference of magnetic drum partly is non-magnetic conduction district (3), its cross-sectional sizes, shape is decided on control ratio, its quantity is pressed Changing Pattern and is decided, arrange vertically, also can be poroid (air is made non-magnet material), its control principle is: when field coil (7) when passing to electric current, then in yoke (6), produce magnetic flux, and the yoke (among the figure (1) and (8)) that enters controlled flux path through the magnetic conduction district of magnetic drum (5) forms the loop, and in controlled yoke inductive coil, (among the figure (2), (4)) induced potential and electric current, the size of its electromotive force and electric current depends on the size by the magnetic flux of this yoke.With two path magnetic flux proportional controllers shown in Figure 1 is example, when magnetic drum (5) clockwise rotates when making non-magnetic conduction district (3) put on the axis of dried yoke (1), the magnetic flux that then enters this yoke will reduce, and the magnetic flux that enters yoke (8) will increase, and the induced potential of coil (2) is reduced, the induced potential of coil (4) increases.Otherwise if clockwise rotate then.As seen rotating magnetic drum can make the magnetic flux in the controlled yoke change by fixed proportion, reaches the proportional control to induced potential in the inductive coil, and the export ratio electric potential signal can be sent into the proportional control that realizes two amounts in the robot control system(RCS).Figure 2 shows that a four-way road magnetic flux proportional controller.

The multipath magnetic flow proportional control is by regulating the effective magnetic conductive area of each flux paths, and magnetic drum and being connected of yoke are slick and sly the linking to be similar to air gap irrelevantly all the time, can reach the better linearity adjusting.When magnetic drum (5) is made by the desired rule of being controlled of each magnetic flux, as shown in Figure 2, promptly form rule " storage " in magnetic drum, regulate magnetic drum and can reach by the variation of being scheduled to " storage " rule.

Use control method of the present invention and principle and can produce multiple products such as a series of multipath magnetic flow proportional controllers, electric welding machine, pressure regulator.

Fig. 1 is two path magnetic flux proportional controller schematic diagrams, among the figure:

(6)-main yoke; (1), (8)-controlled yoke;

(7)-field coil; (2), (4)-inductive coil;

(5)-magnetic drum; (3)-non-magnetic conduction district in the magnetic drum.

Fig. 2 is multi-path (four a tunnel) magnetic flux proportional controller schematic diagram, among the figure:

(1)-controlled yoke; (2)-inductive coil;

(3), the non-magnetic conduction district in (4)-magnetic drum; (5)-magnetic drum;

(6)-main yoke; (7)-field coil.

Fig. 3 is a magnetic drum formula threeway pressure regulator structure principle chart, among the figure:

(1)-band louvre shell; (2), (5), (7)-coil winding;

(3)-control hand wheel; (4)-magnetic drum in non-magnetic conduction district arranged;

(6)-connect the rotating shaft of magnetic drum and handwheel.

Fig. 4 is among the magnetic drum formula threeway pressure regulator elementary diagram figure:

R _R-input voltage; U _C1-output voltage 1; U _C2-output voltage 2(2), (5), (7) are coil winding.

Fig. 5 is a magnetic drum control type electric welding machine structural drawing, among the figure:

(1)-adjusting handle; (2), (9)-yoke; (3)-magnetic drum;

(4)-holding pin; (5)-rotating shaft; (6)-be close to the road yoke;

(7), (8)-winding; (10)-damping block.

Fig. 6 is existing electric welding machine structure principle chart, among the figure:

(1)-be close to the road iron core; (2)-main iron core; (3)-primary coil;

(4)-secondary coil.

Figure (7) is among contactless autocoupling type pressure regulator structure principle chart (list of references: the Soviet Union the invents 860152) figure:

(1)-primary coil; (2)-secondary coil; (3)-iron core;

(4)-adjust excellent; (5)-adjust the non-magnet material on the rod.

Embodiments of the invention are as follows:

Embodiment 1, two path magnetic flux proportional controller, its structural principle is described with above-mentioned Fig. 1.

Embodiment 2, are a four-way road magnetic flux proportional controller, and its structural principle is seen Fig. 2, and conducting magnet core has four controlled paths (yoke), contain the non-magnetic conduction district (3) and (4) that differ in size in the magnetic drum (5), constitute the specified arrangement rule.Rotating magnetic drum (5) can obtain the magnetic flux by specific rule variation in 4 controlled paths, carry out multi-channel proportional control simultaneously.

Embodiment 3 is that its structure is seen Fig. 3 according to the magnetic drum formula threeway pressure regulator of said method and principle manufacturing, and elementary diagram is seen Fig. 4.Its principle of work is: when magnetic drum (4) is in position shown in Figure 3, and add input voltage U at A, B point-to-point transmission _RThe time, the induced potential in the coil (5) is zero, the C point voltage is O point voltage, U at that time _C1=U _C2=U _o; When the non-magnetic conduction district of magnetic drum (4) was turned to coil (2) counterclockwise, magnetic flux reduced in the coil (2), and the O point voltage is higher, also induced potential in the coil (5), U _C1=U _O+ U _CBe the process of boosting, U _C2=U _OAlso be that the process of boosting compares U _C1Lacked a U _CDeal.When non-magnetic conduction district is transferred on the axis of coil (2), induced potential maximum in the coil (5), the highest U of O point voltage _O=U _R; U _C1=U _C+ U _O=U _C+ U _RBe voltage journey the most to a high-profile, and U _C2=U _O=U _RWhen from position shown in Figure 3 during with the clockwise tuning coil in non-magnetic conduction district (7) of magnetic drum (4), O point current potential trend B point current potential, the induced voltage on the coil (7) reduce and induced voltage increase on the coil (5), U _C1=U _C+ U _O, U _C2=U _OStill than U _C1Few U _CDeal, U when non-magnetic conduction district transfers to coil (7) axial location _C1=U _CU _C2=U _O=O, output voltage is relevant with node voltage in whole adjustment process.This pressure regulator is simple in structure, contactless, no air gap, no added losses; Voltage-regulation is steady, degree of accuracy height, and can transit directly to a certain value of high level cadre's input voltage by a certain magnitude of voltage that is lower than input voltage, this be general pressure regulator can't be obtained.

The magnetic drum control type accent stream electric welding machine that embodiment 4 makes for using the inventive method, its structure sees that with principle its basic structure of Fig. 5 is similar to electric welding machine of the prior art, regulate main flux road and the magnetic flux proportional distribution of being close to the road flux path and used magnetic drum (3) with non-magnetic conduction district, reach the purpose of regulating the working current in the working coil (7), can regulate arbitrarily downwards from ratings.Operating grip (1) is directly installed on the magnetic drum (3), constructs very simply, adjusts smoothly, and effect is obvious.For preventing the magnetic drum generation rotation of being shaken, be provided with elastic damping briquetting (10).

Claims

1, a kind of method of multipath magnetic flow being carried out this example control, in the magnetic control system of forming by main iron core, yoke, coil and bypass iron core, carry out the control of each magnetic circuit magnetic flux by changing each magnetic circuit magnetic resistance, feature of the present invention is that the joining place in each yoke is provided with the rotating magnetic drum that is provided with non-magnetic conduction district in proportion, rotating magnetic drum is regulated the non-magnetic conduction district in the magnetic drum and the relative position of each yoke, and the proportional control to each flux path is carried out in the magnetic conduction cross section that changes each flux path.

2, a kind of by the described multi-path magnetic flow ratio control method of claim 1, it is characterized in that described magnetic drum made by permeability magnetic material, can rotate around the axis, how much be furnished with non-magnetic conduction district along what it axially looked institute's control ratio and path.

3, a kind ofly make,, it is characterized in that this controller has by claim 1 and 2 described magnetic drums by the multi-path magnetic flux proportional controller that iron core, yoke, coil are formed by the described method of claim 1.

4, a kind of by the described multi-path magnetic flux proportional controller of forming by iron core, yoke, coil of claim 3, it is characterized by one and have by claim 1 and 2 described magnetic drums electric welding machine as adjusting, Control current mechanism.

5, a kind of by the described multi-path magnetic flux proportional controller of forming by iron core, yoke, coil of claim 3, it is characterized in that be one have by claim 1 and 2 described magnetic drums as regulate, the magnetic drum of control voltage mechanism, the coil on the yoke is the threeway pressure regulator of wye connection.