CN101262201B - Closed control system for PCB driller high-speed motor - Google Patents
Closed control system for PCB driller high-speed motor Download PDFInfo
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- CN101262201B CN101262201B CN2008100662586A CN200810066258A CN101262201B CN 101262201 B CN101262201 B CN 101262201B CN 2008100662586 A CN2008100662586 A CN 2008100662586A CN 200810066258 A CN200810066258 A CN 200810066258A CN 101262201 B CN101262201 B CN 101262201B
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- rotor
- closed
- loop control
- control system
- speed
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- 238000005553 drilling Methods 0.000 claims abstract description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 21
- 230000003137 locomotive effect Effects 0.000 claims description 19
- 229910052742 iron Inorganic materials 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 230000003321 amplification Effects 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 230000001419 dependent effect Effects 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 4
- 230000008859 change Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000004907 flux Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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Abstract
The invention relates to a closed-loop control system of a high-speed motor of a PCB drilling machine. The closed-loop control system comprises a high-speed motor connected with a power phase, a power inverter connected with a power end of the high-speed motor and a velometer arranged on the high-speed motor and connected with the power inverter, wherein, the velometer sends detected and treated frequency signals of a rotor of the high-speed motor to the power inverter and conducts the closed-loop control of the rotating speed of the high-speed motor. As the closed-loop control system of the invention has high automation and can implement the continuous detection and the automatic adjustment to high-speed rotation and instantaneous velocity of the rotor, the processing quality and the normal operation of the PCB drilling machine can be effectively ensured.
Description
[technical field]
The present invention relates on printed circuit board (pcb), bore the drilling machine of micropore, particularly relate to a kind of closed-loop control system of PCB driller high-speed motor.
[background technology]
The drilling machine of printed circuit board (pcb) is an a kind of high speed interlock drilling machine, and is fast and required precision is high because of its velocity of rotation, so its motion must be carried out closed-loop control.Drill bit occurs and come off in boring procedure, drilling depth is not enough, and during faults such as rotor speed instability, its real-time status will be simulated demonstration on LCDs, and autostop.When the fault eliminating, after the recovery normal condition, system could operate as normal.This a series of control procedure is realized by CNC (computer numerical control) unit.There are the following problems and defective for existing P CB drilling machine control system: first machine-electric control mode disunity, and the employing servomotor or the linear electric machine that have, signal feedback and execution are slow, and action has than mistake; It two is that machine-electric control is open loop, promptly machinery or electric on fault, can not in time compensate mutually, need manual intervention.Thereby reduced the operating rate of PCB rig, increased operator's working strength; Even it three is that machine-electric control has realized closed-loop control, the operating frequency of the electronic devices and components that adopted is low, therefore to the High-Speed PCB drilling machine (as 180,000 change /) just can not be suitable for.
[summary of the invention]
The present invention is intended to address the above problem, and a kind of running speed that can detect rotor automatically is provided, and adjusts the supply frequency of motor automatically according to the signal of feedback, thus the closed-loop control system of the PCB driller high-speed motor of automatic control motor rotating speed.
For achieving the above object, the invention provides a kind of closed-loop control system of PCB driller high-speed motor, this system comprises:
High-speed electric expreess locomotive, it is connected with power supply;
Power converter, it is connected in the power end of high-speed electric expreess locomotive;
Velometer, it is installed on the high-speed electric expreess locomotive, and is connected with power converter,
Described velometer is delivered to power converter after treatment with the frequency signal of detected high speed rotor of motor, and the rotating speed of high-speed electric expreess locomotive is carried out closed-loop control.
High-speed electric expreess locomotive comprises casing, rotor, stator and bearing, wherein, has formed the copper mouse cage on the rotor, and rotor is contained in central authorities in the casing; Stator is to be formed by the silicon steel sheet closed assembly, is wound with many groups coil of arranging in certain sequence around the middle part of silicon steel sheet, and stator is contained in the copper mouse cage outside of rotor; Bearing is an air bearing, and it is contained between the inwall of rotor and casing.
The end face edge compartment of terrain of rotor is provided with the breach of a plurality of usefulness that test the speed.
Velometer is contained on the power plate in the front end face outside of rotor.
Velometer is miniature non-contact sensor, specifically, transducer is a magneto-dependent sensor, more particularly, velometer has a shell, interior being packaged with successively by encapsulating material of shell detected and the sensor chip that the processing speed signal is used, the miniature permanent-magnet steel that is used for magnetic induction and poly-magnetic soft iron, and the lead that connects chip is drawn by shell one end.
Include mould/number circuit, the amplification and rectification circuit that is attached thereto and signal feedback circuit in the sensor chip, wherein, signal feedback circuit is connected with power converter through lead.
Permanent-magnet steel is the column that alloy nickeliferous, chromium is made.
Poly-magnetic pure iron is plates.
Contribution of the present invention is that it has effectively overcome the defective of the drilling machine control system of existing PCB.System of the present invention can detect the running speed of rotor automatically, and adjust the supply frequency of motor automatically according to the signal of feedback, thereby automatic control motor rotating speed, therefore formed a closed-loop control system, this system automation degree height, can implement continuous detecting and adjustment automatically to the high speed rotating and the spot speed of rotor, thereby can effectively guarantee the crudy and the operate as normal of PCB drilling machine.
[description of drawings]
Fig. 1 is a structured flowchart of the present invention.
Fig. 2 is a high-speed electric expreess locomotive structural representation of the present invention, and wherein Fig. 2 A is the overall structure cutaway view, and Fig. 2 B is the rotor structure schematic diagram, and Fig. 2 C is a rotor front end face schematic diagram, and Fig. 2 D is the stator structure schematic diagram.
Fig. 3 is a velometer structure cutaway view of the present invention.
Fig. 4 is the mould/number circuit diagram of velometer of the present invention.
Fig. 5 is a velometer signal output sketch.
[embodiment]
Consult Fig. 1, the closed-loop control system of PCB driller high-speed motor of the present invention comprises high-speed electric expreess locomotive 10, power converter 20 and velometer 30.The closed-loop control of this system comprises the rotating speed of real-time detection high speed rotor of motor and the detection data of this rotating speed is fed back to power converter automatically, by adjusting the incoming frequency of motor power, high-speed electric expreess locomotive controlled automatically.This control be one continuously, by system detect automatically, automatically the feedback, the closed-loop control of automatic speed regulation.
Fig. 2 shows the structure of high-speed electric expreess locomotive, shown in Fig. 2 A, described high-speed electric expreess locomotive 10 comprises casing 11, rotor 12, stator 13 and bearing 14, wherein, rotor 12 structures are shown in Fig. 2 B, and it is a column, formed copper mouse cage 121 on it, as Fig. 2 C, the front end face marginating compartment of rotor 12 be provided with the U-shaped breach 122 of a plurality of usefulness that test the speed.Rotor 12 is contained in central authorities in the casing 11.Stator 13 structures are shown in Fig. 2 D, it is the sleeve shape body that is formed by the silicon steel sheet closed assembly, be wound with many groups coil 131 of arranging in certain sequence around the middle part of silicon steel sheet, the diameter of bore of stator and rotor mouse cage 121 external diameters are complementary, and are sleeved on mouse cage 121 outsides of rotor.Bearing 14 is an air bearing, and it is contained between the inwall of rotor 12 and casing 11, has air gap between itself and the rotor 12, can avoid the contact friction between itself and rotor.
When high-speed electric expreess locomotive of the present invention is worked, when alternating current will produce alternating magnetic field during by stator coil, it is opposite that alternating magnetic field goes out polarity at the bar shaped bus internal induction of mouse cage, dephased electromagnetic field, and rotor is rotated by the electromagnetic attracting force of positive and negative alternation.The speed of rotor rotation is by variable frequency power supply control, and supply frequency f is directly proportional with the rotating speed of rotor:
F=N * n/60 wherein, n--rotor speed, rev/min; Breach number in the N--rotating shaft;
Then, n=60f/N. is n=f * 60/N.
Therefore, as long as adjust the incoming frequency f of frequency converter, the rotation speed n of rotor is respective change also, and this has just realized the variable frequency control process to high-speed electric expreess locomotive.
Described power converter 20 can be selected conventional products for use, and it is connected in the power input of high-speed electric expreess locomotive, is used for controlling the velocity of rotation of high speed rotor of motor by changing supply frequency.
Velometer 30 is the devices that are used to obtain the high speed rotor of motor rotating speed.Be the high speed rotating of realization rotor and the continuous detecting of spot speed, must use the non-contact type velometer, and require its volume little that the feedback signal range value of detection is big, antijamming capability is strong, signal stabilization.Velometer 30 among the present invention is miniature non-contact sensor, specifically, it is a kind of miniature magneto-dependent sensor, its structure as shown in Figure 3, this velometer 30 has the cylindrical shell 31 of a hollow, sensor chip 32, miniature permanent-magnet steel 33 and poly-magnetic soft iron 34 are housed in the shell vertically successively, and above-mentioned device passes through epoxy encapsulation.Include mould/number circuit 321, the amplification and rectification circuit 322 that is attached thereto and signal feedback circuit 323 in the described sensor chip 32, wherein, signal feedback circuit 323 is connected with power converter 20 through lead 35, is solidified with the program of detection and processing speed signal in the sensor chip 32.Miniature permanent-magnet steel 33 is a magnetosensitive device, and it is the column that alloy nickeliferous, chromium is made, its magnetic flux density 100-150 * 10
-3Tesla (T), it has resistant to elevated temperatures advantage, and its magnetic flux density can not change below 200 ℃, can fully be suitable for the temperature environment of high-speed drilling machine.Poly-magnetic soft iron 34 is that iron content purity is 99.9% circular soft iron sheet.The lead 35 that connects sensor chip 32 is drawn by shell one end.Above-mentioned velometer 30 is contained on the power plate 15 of high-speed electric expreess locomotive front end the position corresponding with the U-shaped breach 122 at the front end face edge of rotor 12.
The basic principle of this velometer 30 is as follows: because pass through the magnetic flux density Φ and the total magnetic resistance R of the magnetic circuit between rotor and transducer of transducer
MSquare value be proportional, therefore:
If the electric current that chip passes through is I, the distance of transducer and rotor cover is δ, and the magnetic conductor magnetic resistance of magnet steel and pure iron is R
m, the magnetic resistance between rotor and the transducer is R
δ,
Then: Φ=K * I/R
M=K * I/ (R
m+ R
δ)
Wherein, K is a design constant, is determined by structure.
After main shaft, rotor size design are determined, after the gap delta between transducer and rotor is determined by strong, the weak requirement of output signal, following electromagnetic induction relation is arranged then:
ΔΦ＝f
1(ΔR
δ)
The signal amplitude of chip c end output: e=-Kd Φ/dt=-Kd (K * I/R
m+ R
δ)/dt
＝-K
2×I/(R
m+R
δ)
2
And R
mAfter sensor production was finished, it can not change, so the amplitude e of its output signal is decided by R
δ, and and R
δSquare value be inversely proportional to Δ R
δCause ΔΦ.So the installation of transducer is very accurate.And the minor variations of distance between rotor, output signal will have bigger variation.The frequency f of induced signal e
1Can reach 5-100KHz.If establish rotor whenever circled 6 breach, i.e. N=6, then Δ R
δ6 variations are arranged, and chip will be exported 6 sine wave signals, the rotation speed n of spindle rotor=60 * f
1/ N=60 * (5000-100000)/the 6=50000-1000000 commentaries on classics.
Consult Fig. 2 A, Fig. 4, Fig. 5, owing on velometer 30, be provided with permanent-magnet steel 33 and poly-magnetic soft iron 34, when the breach 122 (seeing Fig. 2 C) of detected rotor end-face when flashing the magnetosensitive district, the MR that mould/number circuit 321 (see figure 4)s are represented in the sensor chip 32
1And MR
2MR will be undergone mutation in the magnetic field at place
1, MR
2Resistance also change.As a, b two ends making alive V
Cc, then the c end is imported out a sine wave signal (see figure 5).After the amplification and rectification circuit 322 of this sine wave signal in sensor chip 32 handled, produce a pulse, send into the CNC unit, the signal feedback circuit 323 through sensor chip feeds back to power supply and frequency converter again, has realized closed-loop control.
Claims (7)
1. the closed-loop control system of a PCB drilling machine motor is characterized in that, this system comprises:
High-speed electric expreess locomotive (10), this high-speed electric expreess locomotive (10) comprise casing (11), rotor (12), stator (13) and bearing (14), wherein, have formed copper mouse cage (121) on the rotor (12), and rotor is contained in central authorities in the casing (11); Stator (13) is to be formed by the silicon steel sheet closed assembly, is wound with many groups coil of arranging in certain sequence around the middle part of silicon steel sheet, and stator (13) is contained in copper mouse cage (121) outside of rotor; Bearing (14) is an air bearing, and it is contained between the inwall of rotor (12) and casing (11), and this high-speed electric expreess locomotive (10) is connected with power supply;
Power converter (20), it is connected in the power end of high-speed electric expreess locomotive;
Velometer (30), this velometer has a shell (31), interior being packaged with successively by encapsulating material of shell detected and the sensor chip (32) that the processing speed signal is used, the miniature permanent-magnet steel (33) that is used for magnetic induction and poly-magnetic soft iron (34), the lead (35) that connects sensor chip is drawn by shell one end, the power plate (15) that velometer (30) is contained in the front end face outside of rotor (12) is gone up the corresponding position of U-shaped breach (122) with rotor (12) front end face edge, and is connected with power converter (20);
Described velometer (30) is delivered to power converter (20) after treatment with the frequency signal of detected high speed rotor of motor, and the rotary state of high-speed electric expreess locomotive is carried out closed-loop control.
2. closed-loop control system as claimed in claim 1 is characterized in that, the end face edge compartment of terrain of described rotor (12) is provided with the U-shaped breach (122) of a plurality of usefulness that test the speed.
3. closed-loop control system as claimed in claim 1 is characterized in that, described velometer (30) is miniature non-contact sensor.
4. closed-loop control system as claimed in claim 3 is characterized in that, described transducer is a magneto-dependent sensor.
5. closed-loop control system as claimed in claim 1, it is characterized in that, include mould/number circuit (321), the amplification and rectification circuit (322) that is attached thereto and signal feedback circuit (323) in the described sensor chip (32), wherein, signal feedback circuit (323) is connected with power converter (20) through lead (35).
6. closed-loop control system as claimed in claim 1 is characterized in that, the column that described permanent-magnet steel (33) is made for alloy nickeliferous, chromium.
7. closed-loop control system as claimed in claim 1 is characterized in that, described poly-magnetic soft iron (34) is plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100662586A CN101262201B (en) | 2008-03-28 | 2008-03-28 | Closed control system for PCB driller high-speed motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100662586A CN101262201B (en) | 2008-03-28 | 2008-03-28 | Closed control system for PCB driller high-speed motor |
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| Publication Number | Publication Date |
|---|---|
| CN101262201A CN101262201A (en) | 2008-09-10 |
| CN101262201B true CN101262201B (en) | 2010-06-02 |
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ID=39962468
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100662586A Active CN101262201B (en) | 2008-03-28 | 2008-03-28 | Closed control system for PCB driller high-speed motor |
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| Country | Link |
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| CN (1) | CN101262201B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106053128A (en) * | 2016-05-26 | 2016-10-26 | 淮南市宜留机械科技有限公司 | Drill hoisting speed and direction control assembly for core-drilling machine |
| CN112835315B (en) * | 2021-01-06 | 2022-03-08 | 苏州维嘉科技股份有限公司 | Device and method for controlling drilling depth of circuit board |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2200174Y (en) * | 1994-06-27 | 1995-06-07 | 顾忠 | Electronic vehicle-speed odometer |
| CN2257266Y (en) * | 1995-09-28 | 1997-07-02 | 哈尔滨铁路局工业处科学技术研究所 | Locomotive speedometer |
| CN2621100Y (en) * | 2003-06-19 | 2004-06-23 | 深圳市大族数控科技有限公司 | PCB six-bit drilling machine |
| CN2803580Y (en) * | 2005-05-27 | 2006-08-09 | 汤秀清 | High speed airfloat electric manshaft |
-
2008
- 2008-03-28 CN CN2008100662586A patent/CN101262201B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2200174Y (en) * | 1994-06-27 | 1995-06-07 | 顾忠 | Electronic vehicle-speed odometer |
| CN2257266Y (en) * | 1995-09-28 | 1997-07-02 | 哈尔滨铁路局工业处科学技术研究所 | Locomotive speedometer |
| CN2621100Y (en) * | 2003-06-19 | 2004-06-23 | 深圳市大族数控科技有限公司 | PCB six-bit drilling machine |
| CN2803580Y (en) * | 2005-05-27 | 2006-08-09 | 汤秀清 | High speed airfloat electric manshaft |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2004-36864A 2004.02.05 |
| JP特开2007-285386A 2007.11.01 |
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| Publication number | Publication date |
|---|---|
| CN101262201A (en) | 2008-09-10 |
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| C14 | Grant of patent or utility model | ||
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Owner name: SHENZHEN SUFENG TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: LI XIAOLIN Effective date: 20111024 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20111024 Address after: 518126, Shenzhen, Baoan District Xixiang Street West Industrial Zone Hongshan building, east two floor Patentee after: ShenZhen SuFeng Technology Co., Ltd. Address before: Two, building 518126, Hongshan building, Xicheng Industrial Zone, Baoan District, Shenzhen, Guangdong, Xixiang Patentee before: Li Xiaolin |
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Address after: 518126, Shenzhen, Guangdong province Baoan District Xixiang Street Xicheng Industrial Zone Hongshan building east two floor Patentee after: Shenzhen speed Polytron Technologies Inc Address before: 518126, Shenzhen, Baoan District Xixiang Street West Industrial Zone Hongshan building, east two floor Patentee before: ShenZhen SuFeng Technology Co., Ltd. |