CN206611354U - A kind of magnetic encoder and magneto - Google Patents
A kind of magnetic encoder and magneto Download PDFInfo
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- CN206611354U CN206611354U CN201720418606.6U CN201720418606U CN206611354U CN 206611354 U CN206611354 U CN 206611354U CN 201720418606 U CN201720418606 U CN 201720418606U CN 206611354 U CN206611354 U CN 206611354U
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Abstract
The utility model discloses a kind of magnetic encoder, including：Reading position port, writing position port and register；Reading position port, writing position port are connected with programmable controller respectively, and register is connected with writing position port；Reading position port provides port to programmable controller in the current indicated value of reading magnetic encoder；Writing position port is used to provide port when will calculate according to the current indicated value of magnetic encoder to programmable controller and obtain deviation write-in register, then by the storage of its deviation into register.So that magnetic encoder Z signals keep fixed relation with rotor magnetic pole position, avoid tradition and position of magnetic pole is obtained by motor pole study, improve the accuracy of position of magnetic pole calculating, it is ensured that motor runs well, the life-span of motor is extended to a certain extent, saves the use cost of client.In addition, including the magneto of above-mentioned magnetic encoder disclosed herein as well is a kind of, the motor has corresponding advantage.
Description
Technical field
The utility model is related to field of motor manufacturing, more particularly to a kind of magnetic encoder and magneto.
Background technology
With developing rapidly for electric power, vitality is presented in motor (motor) manufacturing.Motor is that electric energy is turned
Change a kind of equipment of mechanical energy into.It is to use the power on coil (namely stator winding) to produce rotating excitation field and act on rotor
Form electro-magnetic motor force rotation torque.Motor in power system is synchronous motor either asynchronous machine (motor stator magnetic field
Rotating speed does not keep synchronous speed with rotor rotary rpm).
Permanent magnetic synchronous electrical motor has the good spy of simple in construction, small volume, lightweight, the small, efficiency high of loss, dynamic characteristic
Point.Compared with direct current generator, it does not have the needs such as the commutator of direct current generator and brush are more to safeguard what is made troubles to application
Shortcoming；Relatively simple for structure for asynchronous motor, stator current and stator resistance loss reduce, and rotor parameter can
Survey, control performance are good；Compared with common synchronization motor, it eliminates excitation unit, simplifies structure, improves efficiency.Forever
Magnetic-synchro motor vector control system can realize high accuracy, high dynamic performance, large-scale speed governing or location control, therefore forever
The application of magnetic-synchro motor is more and more wider.
The control of synchronous motor needs speed and the position of encoder measurement motor, to realize motor operating control.Coding
Device is to work out signal (such as bit stream) or data, be converted to setting for the signal form that can be used to communicate, transmit and store
Standby, angular displacement or straight-line displacement are converted into electric signal by usual encoder.And magnetic encoder has small volume, low cost, surpassed
Strong environment-adapting ability (anti-dust, anti-vibration) is in synchronous motor using relatively broad.After being installed due to magnetic encoder, it is impossible to
Ensure the relation of Z signals and rotor magnetic pole, in order to which the signal sent by encoder obtains the operating position of current motor rotor
Put, when motor needs to carry out magnetic pole study or Motor Production Test, carry out encoder zeroing.
Require that motor has rotation space when motor carries out magnetic pole study, and disengaged with load, during execute-in-place, due to these
It is required that be unable to reach sometimes, may result in the Angle Position that self study result obtains has deviation even mistake, so as to cause motor work
Make electric current and become big, so as to cause motor ages to accelerate, motor output torque declines, so causing potential safety hazard, increase takes after sale
Workload of being engaged in and service difficulty.
Utility model content
The purpose of the utility model embodiment is to provide a kind of magnetic encoder and magneto, to solve due to magnetic pole
The inaccurate of environment is practised, causes existing magnetic encoder to learn to determine the inaccurate even position of magnetic pole of mistake by magnetic pole
Problem.
In order to solve the above technical problems, the utility model embodiment provides a kind of magnetic encoder, including：
Reading position port, writing position port and register；
Wherein, the reading position port is connected with programmable controller, for the programmable controller in field orientation
Afterwards, port is provided when reading the current indicated value of magnetic encoder；
Said write position port is connected with the programmable controller, for will be according to the magnetic to the programmable controller
Property the current indicated value of encoder calculate and obtain providing port when deviation writes the register, the deviation is magnetic code
The angle difference of device Z signals and winding back emf；
The register is connected with said write position port, the deviation for preserving the programmable controller write-in.
Alternatively, the reading position port and said write position port are same port.
Alternatively, when magnetic encoder is SSI type encoders, the reading position port is：CS, CLK, DAT group
Close or PWM；Said write position port is：CS、CLK、PROG.
Alternatively, when the magnetic encoder is SPI type encoders, the reading position port is：CS、MCLK、
MISO；Said write position port is：CS、MCLK、MOSI.Alternatively, the register is one-off programming register.
Alternatively, in addition to：
Power source change device, the operating voltage for supply voltage to be output as to the magnetic encoder.
Alternatively, in addition to：
Output signal port, the positional information for exporting the magnetic encoder.
Alternatively, the output signal type of the output signal port is following any one：
SSI, ABZ or ABPWM.
Alternatively, the output level type of the output signal port is following any one：
TTL outputs, difference 5V outputs or single-ended 24V outputs；
Wherein, the TTL is output as 5V or 3V TTL outputs.
The utility model embodiment also discloses a kind of magneto, including foregoing magnetic encoder.
The magnetic encoder that the utility model embodiment is provided, including：Reading position port, writing position port and
Register；Reading position port, writing position port are connected with programmable controller respectively, register and writing position port phase
Even；Reading position port provides port to programmable controller in the current indicated value of reading magnetic encoder；Writing position port
Port will be provided during for that will be calculated according to the current indicated value of magnetic encoder to programmable controller and obtain deviation write-in register,
Then by the storage of its deviation into register.
Technical scheme causes magnetic encoder Z signals to keep fixed relation with rotor magnetic pole position, passes through reality
When obtain the angle value of magnetic encoder Z signals and winding back emf, so as to obtain the position of magnetic pole of motor.Avoid tradition logical
Cross motor pole study and obtain position of magnetic pole, improve the accuracy of position of magnetic pole positioning, so as to ensure that motor runs well, keep away
Exempt from due to the potential safety hazard that motor abnormality works and causes；The life-span of motor is extended to a certain extent, saves client's
Use cost.In addition, including the magneto of above-mentioned magnetic encoder disclosed herein as well is a kind of, the motor has corresponding
Advantage.
Brief description of the drawings
For clearer explanation the utility model embodiment or the technical scheme of prior art, below will to embodiment or
The accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
Some embodiments of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawings can also be obtained according to these accompanying drawings.
A kind of structured flowchart of the embodiment for the magnetic encoder that Fig. 1 is provided by the utility model embodiment；
The operation principle schematic diagram for the magnetic encoder that Fig. 2 is provided by the utility model embodiment；
The structural frames of another embodiment for the magnetic encoder that Fig. 3 is provided by the utility model embodiment
Figure.
Embodiment
In order that those skilled in the art more fully understand the utility model scheme, below in conjunction with the accompanying drawings and specific implementation
The utility model is described in further detail for mode.Obviously, described embodiment is only the utility model part
Embodiment, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not doing
Go out the every other embodiment obtained under the premise of creative work, belong to the scope of the utility model protection.
Term " first ", " second ", " the 3rd " " in the description and claims of this application and above-mentioned accompanying drawing
Four " etc. be for distinguishing different objects, rather than for describing specific order.In addition term " comprising " and " having " and
Their any deformations, it is intended that covering is non-exclusive to be included.For example contain the process of series of steps or unit, method,
The step of system, product or equipment are not limited to list or unit, but the step of may include not list or unit.
A kind of structured flowchart such as Fig. 1 institutes of the embodiment for the magnetic encoder that the utility model embodiment is provided
Show, the utility model embodiment may include herein below：
Magnetic encoder may include reading position port 1, writing position port 2 and register 3.
The operation principle of magnetic encoder refers to Fig. 2, and reading position port 1, writing position port 2 are controlled with programming respectively
Device processed is connected, for after field orientation, being read to programmable controller during the current indicated value of magnetic encoder and programming Control
Device will be calculated according to the current indicated value of magnetic encoder to be obtained providing port during deviation write-in register, and deviation is compiled for magnetic
The angle value of code device Z signals and winding back emf.Register 3 is connected with writing position port 2, is write for preserving programmable controller
The deviation entered.
After encoder magnet is installed, its N pole has been fixed relative to motor rotor position, and motor encoder is needed in use
There is fixed phase relation between the Z signals and winding back emf of output.In order that the output signal of encoder turns with motor
Axle is cooperateed with, it is necessary to obtain the relative position of zero point, is used as work starting point；When encoder is assembled on motor, it is necessary to first will
The dead-center position of rotor is aligned with the dead-center position of encoder, and controller can pass through coding when being controlled to motor
The signal that device is sent knows the run location of current motor rotor.
Reading position port 1 is used for being connected with external programming controller with writing position port 2, and magnetic encoder leads to
Cross reading position port 1 and institute in the instruction for going to obtain zero point information, the utility model embodiment is sent to outside programmable controller
The zero point information stated is the current indicated value of magnetic encoder when magnetic pole is fixed (rotor orientation), and programmable controller, which is obtained, works as
By conversion after preceding indicated value, a deviation is obtained, deviation is the differential seat angle of magnetic encoder Z signals and winding back emf
Value.Conversion process is calculated according to the direction of directional magnetic field, motor logarithm, Z signals and winding back emf.
Can be by being passed through the electric current of fixed electrical angle to magnetic pole, magnetic pole is locked in corresponding position, and programmable controller is read
Now the position of encoder, dead-center position can be calculated according to this position.
The zero-bit programming of programmable controller is that one kind can simplify system assembling, and magnet need not be manually adjusting to machinery zero
Position.After the completion of assembling, mechanically and electrically zero-bit can be matched by software.Any position in whole circle can be set as
Permanent new zero-bit.It should be noted that zero-bit numerical value can also modify before programming.For example, will be with mechanical zero
It when being programmed for electrical null position into the angle position of 180 ° (half-turns), only need to increase by 2048 on the reading of mechanical zero, then will
This new numerical value is programmed to OTP registers.
As a preferred embodiment, register 3 can be one-off programming register, i.e. OTP registers.
Reading position port 1 can share a port with writing position port 2, also can be respectively two different ports.
Which kind of situation is used for port is specific, user can select the port on different types of chip and chip according to actual needs
It is determined that.Certainly, port is alternatively the achievable electrical equipment connection member such as plug-in unit, testing weld pad or interface, and this does not influence this practicality
The realization of new embodiment.
Technical scheme causes magnetic encoder Z signals to keep fixed relation with rotor magnetic pole position, passes through reality
When obtain the angle value of magnetic encoder Z signals and winding back emf, so as to obtain the position of magnetic pole of motor.Avoid tradition logical
Cross motor pole study and obtain position of magnetic pole, improve the accuracy of position of magnetic pole positioning, so as to ensure that motor runs well, keep away
Exempt from due to the potential safety hazard that motor abnormality works and causes；The life-span of motor is extended to a certain extent, saves client's
Use cost.
In a kind of specific embodiment, when the magnetic encoder be SSI type encoders when, such as AS5045 or
AS5145, reading position end 1 is：
The combination of (CS, CLK, DAT) or PWM；
Writing position port 2 is：
CS、CLK、PROG。
For SSI type encoders, combination or PWM that reading position port 1 can be for (CS, CLK, DAT)；Writing position port
2 be PROG.
For having the chip of PROG pins, when usual PROG pins connect pull down resistor guarantee normal work, will not enter
Write OTP buffer status.
In another specific embodiment, when the magnetic encoder is SPI type encoders, the reading position
Port 1 is：
CS、MCLK、MISO；
Said write position port 2 is：
CS、MCLK、MOSI。
Three signal wires are used simultaneously, could realize communication.
It should be noted that encoder and fixed chip for fixed type, the port of integrated circuit be it is fixed,
Certain can be selected to organize port as read operation port as needed, certain group is as write operation port, and the utility model embodiment is simultaneously
Any restriction is done not to this.It is preferred that, for certain type of chip, selected according to the lead-out wire of this encoder
Select read operation port and write operation port.Under this embodiment, under to a certain degree, the knot of whole magnetic encoder can be simplified
Structure, advantageously reduces the cost of magnetic encoder, while saving client's use cost.
In a kind of specific embodiment, referring to Fig. 3, the magnetic encoder also includes：
Output signal port 4, is exported by external interface, the positional information for exporting magnetic encoder.Coding
Angular displacement or straight-line displacement are converted into electric signal by device, the electric signal that can have following two form：
Incremental encoder is that displacement is converted into periodic electric signal, then this electric signal is transformed into counting arteries and veins
Punching, the size of displacement is represented with the number of pulse.The digital code of each position one determination of correspondence of absolute type encoder, because
Starting and final position of this its indicating value with measurement are relevant, and unrelated with the pilot process of measurement.
The output signal port 4 of magnetic encoder described in the utility model embodiment can with output pulse signal,
The digital code signal of exportable determination, can be selected, this does not influence the utility model embodiment according to the demand of user
Realize.
The output signal type of output signal port 4 can be following any one：
SSI, ABZ or ABPWM.
SSI (Synchronous Serial Interface, synchronous serial interface) is the serial line interface of a full duplex,
Chip is allowed to be communicated with a variety of serial devices.It is a kind of more common interface mode in high-precision Absolute neutron flux.
SSI interfaces export two pairs of differential signals, i.e. clock signal and data-signal.
AB signals only have basic pulse, can be used to rotating speed and turn to calculate, but because the reference of neither one definitely
Accumulated error is there may be in point, calculating." AB " and common AB in ABZ signals do not have any difference, only rotor
Every revolution, can additionally provide a Z pulse signal, can be used for using when eliminating accumulated error.
The output level type of output signal port 4 can be following any one：
TTL outputs, difference 5V outputs or single-ended 24V outputs；
Wherein, TTL is output as 5V or 3V TTL outputs.
It should be noted that except the above-mentioned signal type and multilevel type enumerated, the utility model embodiment can also be defeated
Go out other kinds of signal.
The type of the output signal of magnetic encoder described in the utility model embodiment is more, and output form is also more,
Therefore versatility is good, it is adapted to be matched from multiple different controller producers.
As a kind of preferred embodiment, referring to Fig. 3, the application can further include：
Power source change device 5, the operating voltage for supply voltage to be output as to the magnetic encoder.Extraneous power supply electricity
Pressure may be inconsistent with the operating voltage of magnetic encoder, therefore needs to increase power source change device, for supply voltage is converted into
It is available for the voltage of magnetic encoder normal work.Such as supply voltage is 24V, and the operating voltage of magnetic encoder is 5V, because
This needs a reduction voltage circuit to complete 24V dropping to 5V so that magnetic encoder can normal work.
The utility model embodiment can be by changing extraneous supply voltage, so that it becomes suitable by adding power source change device
Close the operating voltage of magnetic encoder.So, so that it may avoid the limitation due to supply voltage, the applied field of magnetic encoder is caused
Close and with being restricted, equally avoid client from passing through external transformer to obtain being adapted to the voltage of magnetic encoder work, section
Guest operation cost and use cost are saved, is conducive to improving client's usage experience.
The embodiment of each in this specification is described by the way of progressive, what each embodiment was stressed be with it is other
Between the difference of embodiment, each embodiment same or similar part mutually referring to.For being filled disclosed in embodiment
For putting, because it is corresponded to the method disclosed in Example, so description is fairly simple, related part is referring to method part
Explanation.
Professional further appreciates that, with reference to the unit of each example of the embodiments described herein description
And algorithm steps, can be realized with electronic hardware, computer software or the combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software, generally describes the composition and step of each example according to function in the above description.These
Function is performed with hardware or software mode actually, depending on the application-specific and design constraint of technical scheme.Specialty
Technical staff can realize described function to each specific application using distinct methods, but this realization should not
Think to exceed scope of the present utility model.
Directly it can be held with reference to the step of the method or algorithm that the embodiments described herein is described with hardware, processor
Capable software module, or the two combination are implemented.Software module can be placed in random access memory (RAM), internal memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In any other form of storage medium well known in field.
A kind of magnetic encoder and magneto provided by the utility model are described in detail above.Herein
Apply specific case to be set forth principle of the present utility model and embodiment, the explanation of above example is only intended to
Help understands method of the present utility model and its core concept.It should be pointed out that coming for those skilled in the art
Say, on the premise of the utility model principle is not departed from, some improvement and modification can also be carried out to the utility model, these change
Enter and modification is also fallen into the utility model scope of the claims.
Claims (9)
1. a kind of magnetic encoder, it is characterised in that including：
Reading position port, writing position port and register；
Wherein, the reading position port is connected with programmable controller, for after field orientation, being read to the programmable controller
Port is provided when taking the current indicated value of magnetic encoder；
Said write position port is connected with the programmable controller, for that will be compiled to the programmable controller according to the magnetic
The current indicated value of code device, which is calculated, to be obtained providing port when deviation writes the register, and the deviation is magnetic encoder Z
The angle difference of signal and winding back emf；
The register is connected with said write position port, the deviation for preserving the programmable controller write-in.
2. magnetic encoder as claimed in claim 1, it is characterised in that described when magnetic encoder is SSI type encoders
Reading position port is：CS, CLK, DAT combination or PWM；Said write position port is：CS、CLK、PROG.
3. magnetic encoder as claimed in claim 1, it is characterised in that when the magnetic encoder is SPI type encoders,
The reading position port is：CS、MCLK、MISO；Said write position port is：CS、MCLK、MOSI.
4. magnetic encoder as claimed in claim 3, it is characterised in that the register is programmable register.
5. the magnetic encoder as described in any one of Claims 1-4, it is characterised in that also include：
Power source change device, the operating voltage for supply voltage to be output as to the magnetic encoder.
6. magnetic encoder as claimed in claim 5, it is characterised in that also include：
Output signal port, the positional information for exporting the magnetic encoder.
7. magnetic encoder as claimed in claim 6, it is characterised in that the output signal type of the output signal port is
Following any one：
SSI, ABZ or ABPWM.
8. magnetic encoder as claimed in claim 7, it is characterised in that the output level type of the output signal port is
Following any one：
TTL outputs, difference 5V outputs or single-ended 24V outputs；
Wherein, the TTL is output as 5V or 3V TTL outputs.
9. a kind of magneto, it is characterised in that including the magnetic encoder as described in claim 1-8 any one.
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| CN201720418606.6U CN206611354U (en) | 2017-04-20 | 2017-04-20 | A kind of magnetic encoder and magneto |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106899240A (en) * | 2017-04-20 | 2017-06-27 | 湖州太平微特电机有限公司 | A kind of magnetic encoder and magneto |
| CN111457953A (en) * | 2020-04-01 | 2020-07-28 | 深圳市四方电气技术有限公司 | Automatic calibration detection system and method for rotary encoder |
| CN112748048A (en) * | 2020-12-22 | 2021-05-04 | 青岛科技大学 | Intelligent digital display viscosity measuring device and measuring method thereof |
-
2017
- 2017-04-20 CN CN201720418606.6U patent/CN206611354U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106899240A (en) * | 2017-04-20 | 2017-06-27 | 湖州太平微特电机有限公司 | A kind of magnetic encoder and magneto |
| CN111457953A (en) * | 2020-04-01 | 2020-07-28 | 深圳市四方电气技术有限公司 | Automatic calibration detection system and method for rotary encoder |
| CN112748048A (en) * | 2020-12-22 | 2021-05-04 | 青岛科技大学 | Intelligent digital display viscosity measuring device and measuring method thereof |
| CN112748048B (en) * | 2020-12-22 | 2023-03-17 | 青岛科技大学 | Intelligent digital display viscosity measuring device and measuring method thereof |
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