CN2638330Y - Electromagnetic variable-speed motor controller - Google Patents
Electromagnetic variable-speed motor controller Download PDFInfo
- Publication number
- CN2638330Y CN2638330Y CNU032139888U CN03213988U CN2638330Y CN 2638330 Y CN2638330 Y CN 2638330Y CN U032139888 U CNU032139888 U CN U032139888U CN 03213988 U CN03213988 U CN 03213988U CN 2638330 Y CN2638330 Y CN 2638330Y
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- speed
- given
- circuit
- electromagnetic
- motor controller
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- 230000010363 phase shift Effects 0.000 claims description 14
- 230000004069 differentiation Effects 0.000 claims description 5
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 6
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052754 neon Inorganic materials 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Abstract
The utility model provides an electro-magnetic speed-regulating motor controller, comprising a power, a given segment, a comparer, a phase shifting trigger circuit, a rotating speed displaying circuit, a negative speed feedback, and a primary loop, etc. An analog quantity of given speed is input into the phase shifting trigger circuit which triggers the primary loop to drive the electro-magnetic speed regulating motor, the negative speed feedback inputs the analog quantity of the measured practical speed to the comparer to be compared with the analog quantity of the given speed. The difference is fed back to the phase trigger circuit and displayed by the speed displaying circuit. The utility model is characterized in that: a differential link is added and arranged between the given circuit and the comparer, so as to start the electro-magnetic speed regulating motor from zero and gradually reach the given rotating speed and enter into a stable state. The utility model has the advantages that: the price and maintenance of the electro-magnetic speed regulating motor are both low, and after the improvement of micro-computer of the control part of the electro-magnetic speed-regulating motor, an relative ideal control can be achieved to lead the controller of the speed-regulating motor to run reliably. Therefore the utility model can realize larger application value and better economic effect in the wide application field.
Description
Technical field:
The utility model relates to speed setting controller, is particularly useful for controlling electromagnetic adjustable speed motor.
Background technology:
In many automatic control systems, nearly all require the actuating motor of Electric Traction is carried out speed governing, therefore, buncher is one of element very crucial and important in the automatic control system.The electric machine speed regulation mode of extensive use at present has 1. ac variable frequency speed regulation motor, 2. dc speed-regulating motor, 3. electromagnetic adjustable speed motor, 4. stepping motor, 5. servomotor etc.Wherein electromagnetic adjustable speed motor be owing to can realize constant-torque stepless speed-regulating, and speed-regulating range width (can reach 10: 1～20: 1) is simple in structure, easy to maintenance, especially has cheaper price than other bunchers, and is subjected to user's welcome deeply; Abroad, require nearly all to use this motor in the general actuator at adjusting speed accuracy.Automatic detection ranges such as nondestructive detection system in automation, adopt the ac variable frequency speed regulation motor to tend to accurate detector tables such as reflectoscope, eddy current flaw detec are caused the interference that is difficult to overcome, the easy heating burnout of motor when operating in low speed: and the control system complexity of dc speed-regulating motor, involve great expense, usefulness is low, therefore in automatic checkout system, it is comparatively desirable adopting electromagnetic adjustable speed motor.
But present domestic electromagnetic adjustable speed motor is extensively to adopt JDIA type speed-regulating motor controller control YCT type buncher, and its controller is for the unified design in the former Machinery Ministry whole nation mostly.Start from scratch slow speed governing to given speed when requiring each the start; speed setting to be transferred during shutdown and make zero, otherwise, the not zero setting of rotational speed setup potentiometer; then in full load, produce the great impact electric current when starting at full speed, also can produce very big impact to gearing.This manually-operated high request is not suitable for the program control of automatic control system very much, and, also be necessary to adopt microcomputer or digital control or adjuster that remote adjustment is realized in the velocity setting unit.
Summary of the invention:
The utility model provides a kind of and reaches progressively that given rotating speed enters stable state and with the Motor Controller of Electromagnetic Speed Regulation of the given link of system controlled by computer from zero start.
The Motor Controller of Electromagnetic Speed Regulation that the utility model provides, comprise power unit, given circuit, comparator, phase-shift trigger circuit, rotating speed display, negative velocity feedback link, major loop, with given velocity simulate amount input phase-shift trigger circuit, phase-shift trigger circuit triggers major loop and drives electromagnetic adjustable speed motor, the negative feedback links that tests the speed is passed to the rotating speed display circuit with the actual speed that records and shows, be passed to comparator with analog quantity on the other hand and compare with the analog quantity of given speed, this difference feeds back to phase-shift trigger circuit.It is characterized in that: between given circuit and comparator, be added with differentiation element, make electromagnetic adjustable speed motor progressively reach given rotating speed and enter stable state, realize the soft start of buncher from zero start.
Given link in the described Motor Controller of Electromagnetic Speed Regulation, is controlled so that realize automation by the control of D/A converter spare by microcomputer.
The D/A converter spare of described Motor Controller of Electromagnetic Speed Regulation is dividing potential drop weighted resistance network and inverter and the bidirectional analog switch that is added on the circuit board, the logical value of microcomputer is weighed resistance by the dividing potential drop that analog switch is switched on or switched off in the resistor network, carries out the D/A conversion thereby change output voltage.
The dividing potential drop weighted resistance network of described Motor Controller of Electromagnetic Speed Regulation is the resistance of the geometric progression of two groups of series connection, the geometric ratio of progression is 2, with the logical value of microcomputer by the dividing potential drop power resistance in first group of analog switch series connection or the short circuit, simultaneously, realize the D/A conversion to change output voltage through inverter and the analog switch correspondingly short circuit or the dividing potential drop power resistance in second group of connecting.
The advantage of the Motor Controller of Electromagnetic Speed Regulation that the utility model provides is: the price of electromagnetic adjustable speed motor and maintenance cost are all very low, improve by the microcomputer to the electromagnetic adjustable speed motor control section again, obtain comparatively ideal control, make it reliable.In application fields bigger practical value is arranged like this, will realize good economic benefit.
Description of drawings:
Fig. 1 is original circuit theory diagrams of Motor Controller of Electromagnetic Speed Regulation;
Fig. 2 is original functional-block diagram of Motor Controller of Electromagnetic Speed Regulation;
Fig. 3 is Motor Controller of Electromagnetic Speed Regulation dividing potential drop weighted resistance network figure;
Fig. 4 is Motor Controller of Electromagnetic Speed Regulation given circuit and differentiation element schematic diagram.
Embodiment:
This Motor Controller of Electromagnetic Speed Regulation comprises original power unit, given circuit, comparator, phase-shift trigger circuit, rotating speed display circuit, the negative feedback links that tests the speed, major loop and the differential circuit that increases newly and microcomputer DA change-over circuit.Original circuit of this Motor Controller of Electromagnetic Speed Regulation as illustrated in fig. 1 and 2.
Power unit is added to external power supply on major loop, power transformer and the neon lamp by mains switch, fuse, and power transformer produces secondary power supply: supply with given circuit～20V voltage, supply with comparator～10V voltage, supply with phase-shift trigger circuit～18V voltage and～5V voltage.
In micro-processor controlled given circuit ,～20V voltage is through rectifier bridge Z
3Become direct voltage, be added to two identical components through 7815 again and press power resistance R, 2R, 2
2R, 2
3R, 2
4R, 2
5R, 2
6R, 2
7R (is equivalent to former potentiometer W
1) on the (see figure 3).
8 of microcomputer parallel port outputs and the corresponding digital D of given rotating speed signal voltage
00～D
07Operation simulation switch chip 4066, and by the opposite numeral of inverter chip 4069 generations
D 00～
D 07Operation simulation switch chip 4066 (see figure 3)s.U among Fig. 3
iBe voltage source, two group 2
0R～2
7R is a dividing potential drop power resistance.D
00～D
07Being the input of speed governing voltage digital signal, is 8 position digital signals by the output of microcomputer port, D
i∈ 0,1}.The big or small A of speed regulating control output is with binary number representation:
A＝D
07×2
7+D
06×2
6+…+D
00×2
0 (1)
With 8 position digital signal D
00～D
07And the signal after anti-phase respectively
D 00～
D 07Be connected to 8 bidirectional analog switches, make a pair of identical one of them access (D of dividing potential drop power resistance
i=1,4066 open a way), and another can only be fallen (D by short circuit
i=0,4066 short circuits), so just controlled given speed command signal voltage output U
oSize, U then
oExpression formula be:
U
o=K * A=K * (D
07* 2
7+ D
06* 2
6+ ... + D
00* 2
0) (2) K is proportionality constant,
K=U
i/ (2
7+ 2
6+ ... + 2
0)=U
i/ 255 (3) suitably select the R value, then can make output voltage U
oSatisfy the speed governing voltage request.With U
oBe added to diode D
14On just realized the hardware components of system.Given link is with given velocity simulate amount input comparator.
Supply voltage～the 10V of comparator is through rectifier Z2 rectification, voltage-stabiliser tube WD
1Voltage stabilizing, potentiometer W
4Dividing potential drop, be added to transistor BG
2Collector electrode on, the signal U that comes by given link
oBe added to transistor BG with signal by the feedback circuit that tests the speed
2Base stage on.Transistor BG
2Output signal on the collector electrode is passed to phase-shift trigger circuit.
Supply voltage～the 5V of phase-shift trigger circuit is through half-wave filter rectification device D
11, C
6, R
8And capacitor C
7After the phase shift, be added to transistor BG
1Base stage on, another supply voltage～18V is through rectifier Z
3Rectification is added to transistor BG
1Collector electrode on, transistor BG
1Collector electrode on output signal through transformer MB
2Coupling output is passed to major loop.
Major loop comprises potentiometer RY, resistance R
9, capacitor C
10And controllable silicon, controllable silicon is controlled by the output signal of phase-shift trigger circuit, triggers major loop and connects speed differential clutch, drives electromagnetic adjustable speed motor.
The tachogenerator of the negative feedback links that tests the speed is housed on the electromagnetic adjustable speed motor output shaft, and the voltage of tachogenerator is through three phase rectifier electric bridge D
1～D
6Rectification, capacitor C
9With potentiometer W
3Filtering is by rotating speed display n measuring voltage and demonstration actual speed; This voltage is again through the potentiometer W of filter
2, resistance R
2, capacitor C
4Filtering output is simultaneously by diode D
7, D
8Output coupling with given circuit.
The given circuit of this Motor Controller of Electromagnetic Speed Regulation is with micro-processor controlled.W among the figure
1Be the dividing potential drop weighted resistance network, the E point is the output point of this network.If this point being lower than the voltage that A orders when starting is added on the comparator, difference voltage input major loop relatively, α is non-vanishing for the thyristor angle of flow, output has the step voltage of 0～90V to be added on the electromagnetic adjustable speed motor (not add fashionable open loop multiplication factor very big because of the feedback that tests the speed), makes electromagnetic adjustable speed motor be higher than given rotating speed by certain and progressively reaches desired speed.Impact for overcoming this big startup, behind given circuit, add differentiation element.
The differentiation element (see figure 4) is by resistance R
10And capacitor C
11Form, use diode D
14Be coupled with power supply.
During startup, D among Fig. 4
14Last speed command signal voltage drops to given speed command signal voltage by maximum potential, so the difference voltage when starting after relatively makes the electromagnetic adjustable speed motor startup of starting from scratch, progressively reach given rotating speed, when progressively reaching stable state, this partial circuit no longer works.Start steadily for making, suitably select big resistance R
10And capacitor C
11So just realized the soft start of buncher.
Transform controller simply through adding resistance R, analog switch chip 4066, inverter chip 4069, write a simple interface software again, just realized micro-processor controlled velocity setting link, original controller has been applicable to utilize in the detection system of automation of system controlled by computer electromagnetism buncher speed.
Because the price and the maintenance cost of electromagnetic adjustable speed motor are all very low, by improvement, obtain comparatively ideal control again to the electromagnetic adjustable speed motor control section, make it reliable.In its application fields bigger practical value is arranged like this, will realize good economic benefit.
Claims (4)
1, a kind of Motor Controller of Electromagnetic Speed Regulation, comprise power unit, given circuit, comparator, phase-shift trigger circuit, rotating speed display circuit, the negative feedback links that tests the speed, major loop, given link is imported phase-shift trigger circuit with given velocity simulate amount through comparator, phase-shift trigger circuit triggers major loop and drives electromagnetic adjustable speed motor, the negative feedback links that tests the speed is passed to the rotating speed display on the one hand with the actual speed that records and shows, being passed to comparator with analog quantity on the other hand compares with the analog quantity of given speed, this difference feeds back to phase-shift trigger circuit, it is characterized in that; Be added with differentiation element between described given circuit and the comparator.
2, according to the described Motor Controller of Electromagnetic Speed Regulation of claim 1, it is characterized in that: described given circuit is controlled by D/A converter spare by microcomputer.
3, according to the described Motor Controller of Electromagnetic Speed Regulation of claim 2, it is characterized in that: described D/A converter spare is dividing potential drop weighted resistance network and inverter and the bidirectional analog switch on the circuit board.
4, according to the described Motor Controller of Electromagnetic Speed Regulation of claim 3, it is characterized in that: described dividing potential drop weighted resistance network is the resistance of the geometric progression of two groups of series connection, and the geometric ratio of progression is 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032139888U CN2638330Y (en) | 2003-07-18 | 2003-07-18 | Electromagnetic variable-speed motor controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032139888U CN2638330Y (en) | 2003-07-18 | 2003-07-18 | Electromagnetic variable-speed motor controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2638330Y true CN2638330Y (en) | 2004-09-01 |
Family
ID=34289786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU032139888U Expired - Fee Related CN2638330Y (en) | 2003-07-18 | 2003-07-18 | Electromagnetic variable-speed motor controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2638330Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104378047A (en) * | 2014-11-06 | 2015-02-25 | 广州勒夫蔓德电器有限公司 | Speed control method of linear infinitely variable speed motor |
| CN105373151A (en) * | 2015-12-23 | 2016-03-02 | 高显明 | Vibration machine vibration frequency closed-loop control device |
-
2003
- 2003-07-18 CN CNU032139888U patent/CN2638330Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104378047A (en) * | 2014-11-06 | 2015-02-25 | 广州勒夫蔓德电器有限公司 | Speed control method of linear infinitely variable speed motor |
| CN104378047B (en) * | 2014-11-06 | 2017-02-08 | 广州勒夫蔓德电器有限公司 | Speed control method of linear infinitely variable speed motor |
| CN105373151A (en) * | 2015-12-23 | 2016-03-02 | 高显明 | Vibration machine vibration frequency closed-loop control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |