CN209375384U - A kind of permanent magnet linear synchronous motor magnetic pole detection system - Google Patents
A kind of permanent magnet linear synchronous motor magnetic pole detection system Download PDFInfo
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- CN209375384U CN209375384U CN201920286259.5U CN201920286259U CN209375384U CN 209375384 U CN209375384 U CN 209375384U CN 201920286259 U CN201920286259 U CN 201920286259U CN 209375384 U CN209375384 U CN 209375384U
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Abstract
The utility model creation is related to a kind of permanent magnet linear synchronous motor magnetic pole detection system, the detection unit of the linear motor secondary permanent magnet magnetic field signal between fixed linear electric motor primary winding and for detecting movement, and the signal processing unit connecting with detection unit are mounted on including at least one；It include several Hall sensors in detection unit, each Hall sensor will generate series of switch signal when linear motor secondary permanent magnet is passed through, signal processing unit generates three signals (ABP) after being handled these switching signals, the ABP signal is a similar incremental encoder signal, by analyzing continuous ABP signal, the determination of the direction of motion, movement velocity and pole polarity information of linear motor secondary permanent magnet may be implemented, this is ingenious in design, signal quality is high, stable system performance.
Description
[technical field]
The invention is related to techniques of linear motor field, especially a kind of permanent magnet linear synchronous motor magnetic pole detection system
System.
[background technique]
Permanent magnet linear synchronous motor is made of primary (coil windings) and secondary (permanent magnet).It is divided into according to structure long first
Grade, short secondary and short primary, long secondary two kinds of forms.When being subject to three-phase alternating current on primary three-phase windings, just in air gap
Travelling-magnetic-field, travelling-magnetic-field and secondary permanent magnet interaction are generated, electromagnetic push is generated.It is secondary if fixed primary
Grade moves in a straight line the direction run along traveling wave；, whereas if fixed secondary, then primary will be under electromagnetic push effect
It is moved along travelling-magnetic-field operation opposite direction.
Long primary, short secondary pole type motor is generally using the mounting means of dynamic magnetic: armature winding along traffic direction fixed and arranged,
Permanent magnet is fixed on movement mechanism.Which major advantage is that structure is simple: facilitating wiring and installation, motion mode is also simple
It is single；The disadvantage is that causing electric efficiency low due to around group leader.This motor is mainly used for short distance high-speed motion requirement occasion.
Short primary, long secondary pole type motor generally uses the mounting means of moving-coil (winding): permanent magnet is fixed along traffic direction
Arrangement, winding are fixed on movement mechanism.The major advantage of this mode is electric efficiency height, flexible operation；The disadvantage is that due to
Winding is movement, needs to solve band line (electricity) operation problem, and on the environmental requirement of equipment higher (magnetic field influence).This electricity
Machine is mainly used in vertical hoisting system, the production fields such as transmission line and high-precision machine tool.
But under some equipment occasions, due to not allowing a large amount of tracks to be laid with, or moving body is not allowed to charge, or
When moving body takes the applications such as electric inconvenience, structure limitation, meanwhile, efficiency is improved again, it is in summary long primary, short secondary and short
Two kinds of structures of primary, long secondary structure are optimized: long primary, the short secondary structure of segmented.
The advantages of long primary, the short secondary structure of so-called segmented combines above two frame mode: using multistage winding
It is arranged along running track, secondary permanent magnet is mounted on moving component.This mounting means structure is simple, moving component without
Electricity greatly increases the safety of equipment.Each section of winding and secondary permanent magnet can independently constitute the short long secondary structure of primary, electricity
Engine efficiency is high.
The position of magnetic pole detection of secondary permanent magnet is the basis of synchronous motor control, and only effectively identification is to motor secondary magnetic
The location information of pole just can be carried out the control of machine winding power supply, and then control the traffic direction and speed of motor secondary.Traditional
The detection of linear motor magnetic pole mainly uses electric machine built-in Hall sensor mode: in winding built-in Hall sensors, exporting UVW phase
And AB direction signal, control driver carry out motor drive direction and speed control by the signal.This mode is in low-power machine
Upper or short primary long secondary linear motor on than wide, but for some relatively large high-power straight lines of fever
For motor, influence due to temperature to sensor, built in test mode is infeasible.Also some use external draw wire encoder
Or two dimensional code sensor etc. carries out position measurement, but has the problems such as operation of band line or examined space limit.
[summary of the invention]
To solve the above problems, the invention provides a kind of permanent magnet linear synchronous motor magnetic pole detection system, using outer
Formula detection mode is set, is not influenced by the motor feels hot, no band line is run, and is not limited by space, distance, ingenious in design, system performance
Stablize.
To achieve the above object, the invention provides the following technical solutions:
A kind of permanent magnet linear synchronous motor magnetic pole detection system, fixed linear electric motor primary is mounted on including at least one
The detection unit of linear motor secondary permanent magnet magnetic field signal between winding and for detecting movement, and connect with detection unit
The signal processing unit connect；The detection unit includes that several are uniformly arranged along the linear motor secondary permanent magnet moving direction
The Hall sensor of cloth, each Hall sensor will generate a succession of when the linear motor secondary permanent magnet is passed through
Switching signal, the signal processing unit will generate after the processing of these switching signals three can be used in analyzing linear motor it is secondary
The signal ABP of the traffic direction of permanent magnet, the speed of service and magnetic pole.
Preferably, it is further defined in that the detection unit includes at least four Hall sensors, it is described
Hall sensor is evenly arranged on mounting base along the moving direction of the linear motor secondary permanent magnet.
Preferably, it is further defined in that the linear motor secondary permanent magnet includes that multiple groups are uniformly arranged
Permanent-magnet pole pair, the Hall sensor should expire between the installation width D 1 of the detection unit and the pole span D2 of permanent-magnet pole pair
It is enough lower relationship: D1≤D2.
Preferably, the Hall sensor being further defined in that in the same detection unit is phase
Same unipolarity switch Hall sensor.
Preferably, it is further defined in that one detection unit is electrically connected a signal
Processing unit.
Preferably, it is further defined in that the signal processing unit includes that ABP signal generates chip, letter
Number processing chip, electric power loop circuit, isolation circuit, input port, output port and signal port；The ABP signal generates
The input terminal of chip is electrically connected with the output end of the isolation circuit, and the input terminal of the isolation circuit passes through input port and institute
State the detection port electrical connection of detection unit, the input port and ABP signal generate the output end of chip respectively with the letter
The input terminal electrical connection of number processing chip, the output end of the signal processing chip is electrically connected with the output port；The electricity
Resource loop circuit on one side generates chip with ABP signal and is electrically connected, and the other end is electrically connected with output port.
Preferably, when being further defined in that the detection unit is multiple, each detection unit pair
Answer the signal processing unit, the output port of each signal processing unit and the input terminal of next signal processing unit
Mouth electrical connection, the output port of the last one signal processing unit are electrically connected with host computer or driver.
Preferably, be further defined in that the detection unit be it is multiple when, two neighboring detection unit it
Between length D4 of the clipping room away from D3 and the linear motor secondary permanent magnet between should meet following relationship: D3 < D4.
The beneficial effect of the invention is: the invention is provided between linear electric motor primary winding for detecting
The detection unit of linear motor secondary permanent magnet magnetic field signal, and the signal processing unit by being electrically connected with detection unit generates
ABP signal.The ABP signal is that a similar incremental encoder signal may be implemented straight by analyzing continuous ABP signal
The determination of the direction of motion, movement velocity and pole polarity information of line motor secondary permanent magnet.This is ingenious in design, signal quality
Height, stable system performance.
In addition, the detection unit using external is not limited by the structure of linear electric motor primary winding, also do not sent out by motor
Heat affecting, signal quality are high.
[Detailed description of the invention]
Fig. 1 is the structural schematic diagram of the invention；
Fig. 2 is enlarged diagram at A in Fig. 1；
Fig. 3 is the structural schematic diagram that detection unit uses four Hall sensors；
Fig. 4 is the circuit diagram of signal processing unit；
Fig. 5 is the circuit diagram of isolation circuit in Fig. 4；
Fig. 6 is the circuit diagram of electric power loop circuit in Fig. 4；
When Fig. 7 is using four Hall sensors as detection unit, ABP signal generates the input signal and output signal of chip
Waveform diagram.
[specific embodiment]
Below in conjunction with the drawings and specific embodiments, invention is further described in detail:
As shown in attached drawing 1 to attached drawing 3, it is long just to be suitable for segmented for a kind of permanent magnet linear synchronous motor magnetic pole detection system
The permanent magnet linear synchronous motor of grade, short secondary structure, is mounted between fixed linear electric motor primary winding 4 including at least one
And the detection unit 1 of 5 magnetic field signal of linear motor secondary permanent magnet for detecting movement, and connect with detection unit 1
Signal processing unit 2；The detection unit 1 includes that several are uniformly arranged along 5 moving direction of linear motor secondary permanent magnet
The Hall sensor 12 of cloth, each Hall sensor 12 will be generated when the linear motor secondary permanent magnet 5 is passed through
Series of switch signal, the signal processing unit 2 will generate three after the processing of these switching signals can be used in analyzing straight line
Signal ABP, the ABP signal of the traffic direction of motor secondary permanent magnet 5, the speed of service and magnetic pole has and incremental encoder is believed
Number similar functions.By analyzing continuous ABP signal, the direction of motion, the movement speed of linear motor secondary permanent magnet may be implemented
The determination of degree and pole polarity information, this is ingenious in design, and signal quality is high, stable system performance.
In the present embodiment, 1 number of detection unit is unrestricted, each detection unit 1 connects a signal processing list
Member 2, by the way that all signal processing units 2 are sequentially connected electrically, enough ABP letters that at complete detection system, detection system is generated
Number it can feed back to host computer or driver 3.The detection unit 1 includes at least four Hall sensors 12, the hall sensing
Device 12 is evenly arranged on mounting base 11 along the moving direction of the linear motor secondary permanent magnet 5.When linear motor secondary
When permanent magnet 5 passes through, each sensor 12 can individually generate continuous square-wave signal, and by detecting at port 13 and signal
Unit 2 is managed to connect.
In the present embodiment, the linear motor secondary permanent magnet 5 includes the evenly arranged permanent-magnet pole of multiple groups to 6, described
Hall sensor 12 should meet following relationship between the pole span D2 to 6 of installation width D 1 and permanent-magnet pole of the detection unit 1:
D1≤D2 enables four Hall sensors to detect the same permanent-magnet pole within a certain period of time to 6, to guarantee the standard of detection
True property.Hall sensor 12 in the same detection unit 1 is identical unipolarity switch Hall sensor 12.
As shown in attached drawing 4 to attached drawing 6, the signal processing unit 2 includes that ABP signal generates chip 21, signal processing core
Piece, electric power loop circuit, isolation circuit, input port, output port and signal port；The ABP signal generates chip 21
Input terminal is electrically connected with the output end of the isolation circuit, and the input terminal of the isolation circuit passes through input port and the detection
The detection port 13 of unit 1 is electrically connected, the input port and ABP signal generate the output end of chip 21 respectively with the signal
The input terminal electrical connection of chip is handled, the output end of the signal processing chip is electrically connected with the output port；The input
Port INPUT includes VCC, GND, A, B and P terminals, and output port OUTPUT includes VCC, GND, A, B and P terminals, signal
Port SENSOR includes the terminals such as VCC, GND, S1, S2, S3, S4.The isolation circuit is photoelectric isolating circuit, isolation circuit
Voltage isolation is carried out to the detection unit signal of input, guarantees that the applied signal voltage of chip is stablized.In order to meet chip voltage
It is electrically connected it is required that the electric power loop circuit on one side generates chip 21 with ABP signal, the other end is electrically connected with output port, electricity
Resource loop circuit plays the processing of power supply voltage regulation of voltage regulation.
In the present embodiment, the detection unit can be multiple, and multiple detection units 1 are arranged in fixed linear motor
Between armature winding, the number and detection unit 1 of the signal processing unit 2 are corresponded；From first signal processing unit
Starting, the output port of each signal processing unit 2 is electrically connected with the input port of next signal processing unit 2, last
The output port of a signal processing unit 2 may be electrically connected to host computer or driver 3.The signal that detection unit 1 exports passes through letter
The signal port of number processing unit 2 is connected to isolation circuit, is electrically connected after isolation circuit and generates chip 21, ABP to ABP signal
Signal generates chip 21 and generates corresponding ABP signal by algorithm process, which is transferred to signal processing chip, signal
It is raw after the ABP signal integration that the ABP signal and this signal processing unit that processing chip exports front end signal processing unit generate
The ABP signal of Cheng Xin is transferred to next signal processing unit or driver by output port.
Being illustrated in figure 7 with four Hall sensors is in exemplary detection system, and signal generates in signal processing unit
The input of chip, output signal waveform relationship.When linear motor magnetic pole permanent magnet unit after testing, in detection unit 1
Four Hall sensors 12 generate square-wave signal S1, S2, S3 and S4, since four Hall sensors 12 are along the straight-line electric
The moving direction of machine secondary permanent magnet 5 is uniformly distributed, therefore there are identical phase differences between four square-wave signals.The detection
Length of the clipping room away from D3 Yu the linear motor secondary permanent magnet 5 when unit 1 is multiple, between two neighboring detection unit 1
Following relationship: D3 < D4 should be met between degree D4, to guarantee the ABP signal of feedback host computer or driver 3 for continuous square wave
Signal.
In the present embodiment, the host computer or driver 3 control the energized state of linear electric motor primary winding 4, straight line
After electric motor primary winding 4 is powered linear motor secondary permanent magnet 5 can relative rectilinear electric motor primary winding 4 it is mobile, detection unit 1
On four Hall sensors 12 detection induction is carried out to 6 to permanent-magnet pole, when linear motor magnetic pole permanent magnet unit 1 after testing
When, four Hall sensors 12 in detection unit 1 can generate continuous square-wave signal S1, S2, S3 and S4, due to four square waves
There are identical phase difference between signal, the detection signal that signal processing unit 2 will test unit 1 forms ABP after treatment
ABP signal is finally transferred to host computer or driver 3 by signal, and host computer or driver 3 are according to preset given speed and inspection
The ABP signal of survey exports three-phase current after calculating is compared, by the three-phase current for controlling linear electric motor primary winding 4
It realizes the speed control to linear motor secondary permanent magnet 5, forms closed-loop control, it is ingenious in design, it realizes to linear motor secondary
Permanent magnet 5 is precisely controlled.
Claims (8)
1. a kind of permanent magnet linear synchronous motor magnetic pole detection system, it is characterised in that it include at least one be mounted on it is fixed straight
The detection unit of linear motor secondary permanent magnet (5) magnetic field signal between line electric motor primary winding (4) and for detecting movement
(1), the signal processing unit (2) and with detection unit (1) connecting；The detection unit (1) includes several along described straight
The evenly arranged Hall sensor of line motor secondary permanent magnet (5) moving direction (12), each Hall sensor (12) exist
The linear motor secondary permanent magnet (5) will generate series of switch signal when passing through, the signal processing unit (2) by this
Three traffic direction, the speeds of service that can be used in analyzing linear motor secondary permanent magnet (5) are generated after a little switching signal processing
With the signal (ABP) of magnetic pole.
2. permanent magnet linear synchronous motor magnetic pole detection system according to claim 1, it is characterised in that the detection unit
It (1) include at least four Hall sensors (12), the Hall sensor (12) is along the linear motor secondary permanent magnet (5)
Moving direction is evenly arranged on mounting base (11).
3. permanent magnet linear synchronous motor magnetic pole detection system according to claim 1, it is characterised in that the linear motor
Secondary permanent magnet (5) includes the evenly arranged permanent-magnet pole of multiple groups to (6), and the Hall sensor (12) is in the detection unit
(1) installation width D 1 and permanent-magnet pole should meet following relationship: D1≤D2 between the pole span D2 of (6).
4. permanent magnet linear synchronous motor magnetic pole detection system according to claim 1, it is characterised in that described same described
Hall sensor (12) in detection unit (1) is identical unipolarity switch Hall sensor (12).
5. permanent magnet linear synchronous motor magnetic pole detection system according to claim 1, it is characterised in that one described
Detection unit (1) is electrically connected a signal processing unit (2).
6. -5 any permanent magnet linear synchronous motor magnetic pole detection system according to claim 1, it is characterised in that the letter
Number processing unit (2) includes that ABP signal generates chip (21), signal processing chip, electric power loop circuit, isolation circuit, input
Port, output port and signal port；The ABP signal generates the input terminal of chip (21) and the output end of the isolation circuit
The input terminal of electrical connection, the isolation circuit is electrically connected by input port with the detection port (13) of the detection unit (1),
The input port and ABP signal generate input terminal of the output end of chip (21) respectively with the signal processing chip and are electrically connected
It connects, the output end of the signal processing chip is electrically connected with the output port；The electric power loop circuit on one side and ABP signal
Chip (21) electrical connection is generated, the other end is electrically connected with output port.
7. permanent magnet linear synchronous motor magnetic pole detection system according to claim 6, it is characterised in that the detection unit
(1) when being multiple, the corresponding signal processing unit (2) of each detection unit (1), each signal processing unit
(2) output port is electrically connected with the input port of next signal processing unit (2), the last one signal processing unit (2)
Output port be electrically connected with host computer or driver (3).
8. permanent magnet linear synchronous motor magnetic pole detection system according to claim 6, it is characterised in that the detection unit
(1) when being multiple, clipping room between two neighboring detection unit (1) is away from D3 and the linear motor secondary permanent magnet (5)
Following relationship: D3 < D4 should be met between length D4.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920286259.5U CN209375384U (en) | 2019-03-06 | 2019-03-06 | A kind of permanent magnet linear synchronous motor magnetic pole detection system |
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| CN201920286259.5U CN209375384U (en) | 2019-03-06 | 2019-03-06 | A kind of permanent magnet linear synchronous motor magnetic pole detection system |
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| CN209375384U true CN209375384U (en) | 2019-09-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687650A (en) * | 2019-03-06 | 2019-04-26 | 中山市金马科技娱乐设备股份有限公司 | A kind of permanent magnet linear synchronous motor magnetic pole detection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687650A (en) * | 2019-03-06 | 2019-04-26 | 中山市金马科技娱乐设备股份有限公司 | A kind of permanent magnet linear synchronous motor magnetic pole detection system |
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| CP01 | Change in the name or title of a patent holder |
Address after: 5 Yanjiang Dongsan Road, Torch Development Zone, Zhongshan City, Guangdong Province 528400 Patentee after: Guangdong Jinma amusement Co.,Ltd. Address before: 5 Yanjiang Dongsan Road, Torch Development Zone, Zhongshan City, Guangdong Province 528400 Patentee before: GOLDEN HORSE TECHNOLOGY ENTERTAINMENT Corp.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |