CN209283040U - A kind of speed detection system for magnetic suspension motor - Google Patents
A kind of speed detection system for magnetic suspension motor Download PDFInfo
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- CN209283040U CN209283040U CN201921106910.2U CN201921106910U CN209283040U CN 209283040 U CN209283040 U CN 209283040U CN 201921106910 U CN201921106910 U CN 201921106910U CN 209283040 U CN209283040 U CN 209283040U
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- velocity sensor
- detection system
- speed
- speed detection
- magnetic suspension
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Abstract
The utility model provides a kind of speed detection system for magnetic suspension motor, including velocity sensor, filter circuit and PLC controller, the velocity sensor is arranged radially along the rotor gear of magnetic suspension motor, and distance is the first interval between the test side of the velocity sensor and the outside circle of the rotor gear；The output end of the velocity sensor is connect by the filter circuit with the input terminal of the PLC controller.The utility model detects the spinner velocity of high-speed permanent magnet motor by velocity sensor, and the magnetic signal that will test is filtered after being converted to voltage signal and digitized processing, obtains accurate rotor speed.The speed detection system measures accurate, strong antijamming capability, can be effectively reduced complicated changes of magnetic field bring signal interference, practical.
Description
Technical field
The utility model relates to magnetic levitation technology field more particularly to a kind of velocity measuring systems for magnetic suspension motor
System.
Background technique
With the development of science and technology with the demand of production, magnetic suspension high speed motor has become International Industry area research
One of hot spot.Since magnetic suspension high speed motor has, noise is low, torque ripple is small, control characteristic is good, energy density is high, structure ruler
The advantages that very little small, high-efficient, has been widely used for miniature gas turbine, high speed centrifugation compressor, molecular pump, high speed at present and adds
The industrial circles such as work center, flywheel energy storage, and its application field is still constantly expanding.
During the work time, the stability of rotor is the key that guarantee that motor is steady, efficient operation to magnetic suspension motor,
It is main purpose that motor is run steadily in the long term.It for guarantee rotor steady running, needs to monitor in real time the state of rotor, and turns
The operating status of son includes the speed of service, change in location etc. in operation.Under the prior art, the spinner velocity of high-speed permanent magnet motor is
It being calculated by frequency converter voltage, electric current and motor model, obtained velocity accuracy and speed responsive are poor, and
The closed-loop control system response speed of speed is slow, it is difficult to meet the needs of actual production and application.
Utility model content
In view of the above-mentioned problems, the utility model aims to solve the problem that problem as described above.One purpose of the utility model is
A kind of speed detection system solving any one of problem above is provided.Specifically, the utility model provides tachometric survey
Accurately, the speed detection system of strong antijamming capability.
In order to solve the above technical problems, the utility model provides a kind of speed detection system for magnetic suspension motor,
The speed detection system includes velocity sensor, filter circuit and PLC controller, and the velocity sensor is along magnetic suspension electricity
The rotor gear of machine is arranged radially, and is first between the test side of the velocity sensor and the outside circle of the rotor gear
Interval；The output end of the velocity sensor is connect by the filter circuit with the input terminal of the PLC controller.
Wherein, the speed detection system further includes shielded cable, the output end of the velocity sensor and the filtering
Between the input terminal of circuit, pass through the screen between the output end of the filter circuit and the input terminal of the PLC controller
Cover cable connection.
Wherein, the length at first interval is less than or equal to 1.2mm.
Wherein, the velocity sensor is ATS675 velocity sensor.
The utility model detects the spinner velocity of high-speed permanent magnet motor by velocity sensor, the magnetic signal that will test
It is filtered after being converted to voltage signal and digitized processing, obtains accurate rotor speed.Speed detection system measurement essence
Really, strong antijamming capability can be effectively reduced complicated changes of magnetic field bring signal interference, practical.
It is read with reference to the drawings being described below for exemplary embodiment, other property features of the utility model and excellent
Point will become apparent.
Detailed description of the invention
It is incorporated into specification and the attached drawing for constituting part of specification shows the embodiments of the present invention, and
And together with the description for explaining the principles of the present invention.In the drawings, similar appended drawing reference is for indicating similar
Element.The accompanying drawings in the following description is some embodiments of the utility model, rather than whole embodiments.It is general for this field
For logical technical staff, without creative efforts, other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 schematically illustrates the structural schematic diagram of the speed detection system of the utility model.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.It should be noted that in the absence of conflict, in the embodiment and embodiment in the application
Feature can mutual any combination.
The basic thought of the utility model is, using the velocity sensor with customization magnetic circuit, to the rotor of magnetic suspension motor
Speed is detected, and magnetic signal when by receiving rotor operation is simultaneously converted to voltage signal, is then carried out to the voltage signal
Filtering and digitized processing to obtain the real-time revolving speed of accurate rotor monitor the operating status of rotor, in order to close
Motor speed is accurately adjusted in ring control system, guarantees the stability of rotor operation.
With reference to the accompanying drawing, it is carried out to according to the speed detection system provided by the utility model for magnetic suspension motor
Detailed description.
Fig. 1 shows structure of the utility model for a kind of specific embodiment of the speed detection system of magnetic suspension motor
Schematic diagram, shown referring to Fig.1, which includes velocity sensor 1, filter circuit 2 and PLC controller 3.This reality
With the novel camshaft speed sensor application by automobile application on magnetic suspension motor, by receiving magnetic suspension motor rotor
It is converted to voltage signal after magnetic signal, then processing is filtered etc. to the voltage signal, and then obtain accurate rotor operation speed
Angle value.
Wherein, velocity sensor 1 is arranged radially along the rotor gear 4 of magnetic suspension motor, and the test side of velocity sensor 1
Distance is the first interval between the outside circle of rotor gear 4, guarantees that velocity sensor 1 can receive clearly magnetic signal,
It will not influence the operation of rotor gear 4 simultaneously.Specifically, the output end of velocity sensor 1 is controlled by filter circuit 2 and PLC
The input terminal of device 3 connects.
It is provided with optimized customization magnetic circuit in velocity sensor 1, magnetic field in rotor gear rotation process can be responded and become
Change the magnetic signal generated and carry out switch operation, to absorb the magnetic signal generated when rotor gear operation；Then this magnetic is believed
Number electric signal is converted to by signal conversion module, and exported.Absorption and conversion process of the velocity sensor 1 for signal belong to
In the achievable function of itself component of velocity sensor 1, it is the prior art, is not the skill that the utility model is improved or innovated
Art point.
Velocity sensor 1, which absorbs, has certain noise signal in the signal of conversion, be filtered through filter circuit 2
Afterwards, it obtains accurate voltage signal, then is delivered to PLC controller 3 and carries out signal processing, calculate pulse signal, and export essence
True tachometer value.PLC controller 3 is to the processing of signal, the conventional technical means of calculating process basis signal process field
It realizes, is not the design and improvement main points of the utility model.The technical solution of the utility model is mainly by the convex of automobile application
Wheel shaft speed sensor is applied on magnetic suspension motor, the installation site of velocity sensor 1 and the structure of this speed detection system
At with signal transmission path and direction etc..
In the embodiment shown in fig. 1, this speed detection system further includes shielded cable 5, the output end of velocity sensor 1
Between the input terminal of filter circuit 2, pass through shielding electricity between the output end of filter circuit 2 and the input terminal of PLC controller 3
Cable 5 connects, to further decrease complicated changes of magnetic field bring signal interference.Illustratively, shielded cable 5 can be selected resistance to
Height temperate zone shielded cable can be effectively reduced the decaying of signal caused by the heat generated in high speed magnetic suspension motor operation process and ask
Topic, while signal interference caused by complicated changes of magnetic field is effectively reduced, it is ensured that the signal that PLC controller 3 receives it is accurate
Degree, guarantees the accuracy of the calculated rotor speed of service, and then guaranteeing can be accurate in subsequent closed loop control system
Motor speed is adjusted, monitors the operating status of high speed magnetic suspension motor rotor in real time by the precise rotation of feedback, guarantees magnetcisuspension
The stability of floating motor operation.
It should be pointed out that the first interval between the test side of velocity sensor 1 and the outside circle of rotor gear 4 is less than
Or it is equal to 1.2mm, it is preferable that first is spaced within the scope of 0 ~ 1mm, to guarantee that velocity sensor 1 can be received effectively accurately
Magnetic field variation signal.
In a typical embodiment, velocity sensor 1 can select ATS675 velocity sensor.This device includes one
A unit piece Hall IC, with optimized customization magnetic circuit, can in response to the magnetic signal generated in 4 operational process of rotor gear and
Carry out switch operation.IC includes an advanced digital circuit, which can reduce magnet adverse effect and system deviation.
Signal processing design makes equipment that can work in target zero-speed, does not depend on air gap and 4 speed of dynamic adaptable rotor gear
The particular job condition of Application in Sensing.ATS675 also has a low bandwidth filter, and the tolerance to noise jamming can be improved
With the signal-to-noise ratio of IC, it is further ensured that the speed exact value of acquisition.
Descriptions above can combine implementation individually or in various ways, and these variants all exist
Within the protection scope of the utility model.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that including the article of a series of elements or equipment not only includes those elements, but also including not having
There is the other element being expressly recited, or further includes for this article or the intrinsic element of equipment.Do not limiting more
In the case where system, the element that is limited by sentence " including ... ", it is not excluded that in the article or equipment for including the element
There is also other identical elements.
Above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, reference only to preferred embodiment pair
The utility model is described in detail.Those skilled in the art should understand that can be to the technology of the utility model
Scheme is modified or replaced equivalently, and without departing from the spirit and scope of the technical scheme of the present invention, should all be covered at this
In the scope of the claims of utility model.
Claims (3)
1. a kind of speed detection system for magnetic suspension motor, which is characterized in that the speed detection system includes that speed passes
Sensor (1), filter circuit (2) and PLC controller (3), rotor gear of the velocity sensor (1) along magnetic suspension motor
(4) it is arranged radially, and between first between the test side of the velocity sensor (1) and the outside circle of the rotor gear (4)
Every；The output end of the velocity sensor (1) is connected by the input terminal of the filter circuit (2) and the PLC controller (3)
It connects；
The length at first interval is less than or equal to 1.2mm.
2. speed detection system as described in claim 1, which is characterized in that the speed detection system further includes shielded cable
Between the output end of the velocity sensor (1) and the input terminal of the filter circuit (2), (5), the filter circuit (2)
It is connect by the shielded cable (5) between output end and the input terminal of the PLC controller (3).
3. speed detection system as described in claim 1, which is characterized in that the velocity sensor (1) is ATS675 speed
Sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921106910.2U CN209283040U (en) | 2019-07-16 | 2019-07-16 | A kind of speed detection system for magnetic suspension motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921106910.2U CN209283040U (en) | 2019-07-16 | 2019-07-16 | A kind of speed detection system for magnetic suspension motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209283040U true CN209283040U (en) | 2019-08-20 |
Family
ID=67606693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921106910.2U Active CN209283040U (en) | 2019-07-16 | 2019-07-16 | A kind of speed detection system for magnetic suspension motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209283040U (en) |
-
2019
- 2019-07-16 CN CN201921106910.2U patent/CN209283040U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200116 Address after: 261061 no.5201, Yingqian street, Zhangying community, Qingchi street, high tech Zone, Weifang City, Shandong Province Patentee after: Tianrui maglev Intelligent Technology (Shandong) Co., Ltd Address before: High tech Zone in Shandong city of Weifang Province, 261061 Silver Street No. 6699 Patentee before: SHANDONG TIANRUI HEAVY INDUSTRY CO., LTD. |
|
| TR01 | Transfer of patent right |