CN107515574B - Linear motor magnetically-liquid adding device and method - Google Patents
Linear motor magnetically-liquid adding device and method Download PDFInfo
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- CN107515574B CN107515574B CN201710705675.XA CN201710705675A CN107515574B CN 107515574 B CN107515574 B CN 107515574B CN 201710705675 A CN201710705675 A CN 201710705675A CN 107515574 B CN107515574 B CN 107515574B
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- 239000007788 liquid Substances 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000001133 acceleration Effects 0.000 claims abstract description 21
- 238000007405 data analysis Methods 0.000 claims abstract description 7
- 238000004891 communication Methods 0.000 claims abstract description 4
- 239000003292 glue Substances 0.000 claims abstract description 3
- 238000013016 damping Methods 0.000 claims description 14
- 230000000007 visual effect Effects 0.000 claims description 11
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 239000002699 waste material Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000010808 liquid waste Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24215—Scada supervisory control and data acquisition
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Linear Motors (AREA)
Abstract
The invention discloses a linear motor magnetizing liquid device, which comprises a PC, a power supply driving wire for driving a linear motor, a platform for placing the linear motor, an acceleration sensor and a glue dispensing device, wherein the PC comprises a data acquisition card, a data analysis module and an IO card which are connected in sequence; one end of the power supply driving line is connected to the PC; the acceleration sensor is fixed on the platform and is in communication with the data acquisition card; the IO card is connected to the dispensing device, and the dispensing device is arranged above the platform. The invention also discloses a method for adding magnetic liquid to the linear motor, which can automatically and accurately add the magnetic liquid to the linear motor, simplify the operation steps and shorten the operation time.
Description
Technical Field
The invention relates to the technical field of linear motors, in particular to a linear motor magnetizing liquid device and a linear motor magnetizing liquid method.
Background
In order to prevent the vibrator of the linear vibration motor from colliding with the motor housing, it is generally necessary to fill an appropriate amount of magnetic liquid into the linear vibration motor to control damping. In the prior art, the magnetic liquid is added by manually controlling a switch of the dispenser, the amount of the added magnetic liquid is often estimated according to experience, a certain amount of the magnetic liquid is added first, and then damping is tested to determine whether the requirement is met, if so, the need of adding and testing again is reduced, until the requirement is met. The existing magnetic liquid adding mode is complex in operation, long in time consumption and inevitably causes waste due to the fact that more magnetic liquid is added.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the magnetic liquid filling equipment and the magnetic liquid filling method can automatically and accurately fill the linear motor with magnetic liquid, simplify operation steps and shorten operation time.
In order to solve the technical problems, the first technical scheme adopted by the invention is as follows:
The linear motor magnetizing liquid equipment comprises a PC, a power supply driving line for driving the linear motor, a platform for placing the linear motor, an acceleration sensor and a glue dispensing device, wherein the PC comprises a data acquisition card, a data analysis module and an IO card which are connected in sequence; one end of the power supply driving line is connected to the PC; the acceleration sensor is fixed on the platform and is in communication with the data acquisition card; the IO card is connected to the dispensing device, and the dispensing device is arranged above the platform.
In order to solve the technical problems, the second technical scheme adopted by the invention is as follows:
a method for magnetizing a linear motor, comprising the steps of:
s1, a PC machine is used for powering on a linear motor in a short time through a power supply driving wire, and meanwhile an acceleration sensor is used for collecting vibration waveform data of the linear motor and transmitting the vibration waveform data to the PC machine;
S2, the PC calculates a parameter Q according to vibration attenuation data after the linear motor is electrified and stopped, wherein the parameter Q is inversely proportional to damping, and a calculation formula of the parameter Q is as follows:
F0＝(1/(tpeak2-tpeak1)+1/(tpeak3-tpeak2)+1/(tpeak4-tpeak3))/3
Slope＝(20*((log10(peak2)-log10(peak1))/(t2-t1))+20*((log10(peak3)-log10(peak2))/(t3-t2))+20*((log10(peak4)-log10(peaks3))/(t4-t3)))/3
Q＝(-27.3*F0)/Slope；
F0 is the self-resonant frequency of the linear motor, peak n is the displacement corresponding to the n+1th peak in the vibration waveform after the linear motor is stopped; tpeak n is a time corresponding to the n+1th peak in the vibration waveform after the energization of the linear motor is stopped; slope is the Slope of the peak decay;
S3, controlling the dispensing device to release a corresponding amount of magnetic liquid according to the calculated parameter Q.
The invention has the beneficial effects that: the invention can automatically detect and calculate the damping condition of each linear motor, thereby accurately filling the corresponding amount of magnetic liquid, having simple operation in the whole process and lower dependence on manual experience, shortening the time of adding the magnetic liquid to the linear motor and avoiding the waste of the magnetic liquid.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a linear motor magnetically levitated apparatus in accordance with an embodiment of the invention;
Fig. 2 is a waveform diagram of vibration after the linear motor is stopped being energized;
Description of the reference numerals:
1. A PC; 2. a frame; 3. a platform; 4. a power supply drive line; 5. a scanning gun;
6. an acceleration sensor; 7. a dispensing amount controller; 8. a magnetic liquid container; 81. an injection needle;
9. a linear motor; 10. and a PC screen.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present invention in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
The most critical conception of the invention is that a dispensing device is arranged above a platform 3 for placing a linear motor 9, and an acceleration sensor 6 is arranged on the platform 3; the acceleration sensor 6 is connected with a data collecting card in the PC 1, a data analysis module and an IO card are arranged in the PC 1, and the adhesive dispensing device is connected with the PC 1 through the IO card, so that the magnetic liquid adding process of the automatic linear motor 9 is realized.
Referring to fig. 1, a linear motor magnetizing liquid device includes a PC 1, a power supply driving line 4 for driving a linear motor 9, a platform 3 for placing the linear motor 9, an acceleration sensor 6, and a dispensing device, where the inside of the PC 1 includes a data acquisition card, a data analysis module, and an IO card that are sequentially connected; one end of the power supply driving line 4 is connected to the PC 1; the acceleration sensor 6 is fixed on the platform 3 and is in communication with the data acquisition card; the IO card is connected to the dispensing device, and the dispensing device is arranged above the platform 3.
From the above description, the beneficial effects of the invention are as follows: the invention can automatically detect and calculate the damping condition of each linear motor, thereby accurately filling corresponding amount of magnetic liquid, having simple operation in the whole process and lower dependence on manual experience, shortening the time of filling the magnetic liquid into the linear motor and avoiding the waste of the magnetic liquid.
Further, the device also comprises a scanning gun 5; the PC 1 further comprises a control module, and the scanning gun 5, the data acquisition card and the power supply driving line 4 are all connected to the control module.
As can be seen from the above description, after the linear motor is loaded on the platform, the scanning gun scans the two-dimensional code on the linear motor, on one hand, the two-dimensional code information can play a role of a starting signal, so that the PC machine can energize the linear motor for a short time through the power supply line, and the data acquisition card can acquire waveforms; on the other hand, the two-dimensional code information can be associated with the product and the data information of the product one by one, so that the later-stage tracing is facilitated.
Further, the dispensing device comprises a dispensing quantity controller 7 and a magnetic liquid container 8, wherein the dispensing quantity controller 7 comprises an air pressure outlet; the magnetic liquid container 8 comprises a magnetic liquid outlet; the air pressure outlet is connected with the magnetic liquid container 8 through an air duct.
As can be seen from the above description, after the damping condition of the linear motor is detected and calculated, the dispensing controller can output different air pressures according to the damping condition, so as to fill different amounts of magnetic liquid into the linear motor.
Further, the system also comprises an audible and visual alarm, and the audible and visual alarm is connected with the IO card.
As can be seen from the above description, when the magnetic liquid is added to the linear motor, the audible and visual alarm gives a warning to remind the staff to replace the next linear motor, without the staff monitoring the progress of the magnetic liquid adding to the linear motor at the side of the equipment in the whole process.
A method for magnetizing a linear motor, comprising the steps of:
S1, the PC machine is electrified with the linear motor 9 through the power supply driving line 4 for a short time, and meanwhile, the acceleration sensor 6 collects vibration waveform data of the linear motor 9 and transmits the vibration waveform data to the PC machine;
S2, the PC calculates a parameter Q according to vibration attenuation data after the linear motor 9 is powered on and stopped, wherein the parameter Q is inversely proportional to damping, and a calculation formula of the parameter Q is as follows:
F0＝(1/(tpeak2-tpeak1)+1/(tpeak3-tpeak2)+1/(tpeak4-tpeak3))/3
Slope＝(20*((log10(peak2)-log10(peak1))/(t2-t1))+20*((log10(peak3)-log10(peak2))/(t3-t2))+20*((log10(peak4)-log10(peaks3))/(t4-t3)))/3
Q＝(-27.3*F0)/Slope；
F0 is the self-resonant frequency of the linear motor 9, and peak n is the displacement corresponding to the n+1th peak in the vibration waveform after the linear motor 9 is powered off; tpeak n is a time corresponding to the (n+1) th peak in the vibration waveform after the linear motor 9 is stopped being energized; slope is the Slope of the peak decay;
S3, controlling the dispensing device to release a corresponding amount of magnetic liquid according to the calculated parameter Q.
According to the above description, the method can automatically and accurately calculate the damping condition of the linear motor, so that the filling amount of the magnetic liquid is accurately controlled, the operation of adding the magnetic liquid is simplified, and the magnetic liquid waste is avoided.
Further, the step S3 specifically includes: the method comprises the steps of presetting the magnetizing liquid quantity and the qualified value range corresponding to Q values of different sections, judging the section corresponding to the calculated parameter Q, and controlling the adhesive dispensing device to release the magnetizing liquid quantity corresponding to the section.
Further, the method further comprises the step S4: repeating the steps S1-S3 until the calculated parameter Q is within the acceptable value range.
Further, the step S4 further includes: if the calculated parameter Q is within the acceptable value range, the PC screen 10 displays the PASS and gives an audible and visual alarm.
Further, before step S1, the method further includes: the scanning gun 5 is used for scanning the two-dimensional code on the linear motor 9, and the scanning gun 5 transmits the scanned two-dimensional code information to the PC and stores the information.
From the above description, the two-dimensional code scanned by the scanning gun can not only play a role of a starting signal, but also associate the linear motor with the data information of the linear motor one by one, so that the tracing is convenient.
Example 1
Referring to fig. 1, a first embodiment of the present invention is as follows: the linear motor magnetic liquid adding device comprises a PC 1, a PC screen 10 connected to the PC 1, a power supply driving line 4 and a frame 2, wherein the frame 2 comprises a platform 3 for placing a linear motor 9 and a dispensing device, the dispensing device comprises a dispensing amount controller 7 and a magnetic liquid container 8, and the dispensing amount controller 7 comprises an air pressure outlet; the magnetic liquid container 8 comprises a magnetic liquid outlet; the air pressure outlet is connected with the magnetic liquid container 8 through an air duct. In this embodiment, the magnetic liquid outlet is disposed at the lower part of the magnetic liquid container 8, and an injection needle 81 is disposed at the magnetic liquid outlet, and the injection needle 81 is located directly above the platform 3. The machine frame 2 is further provided with a scanning gun 5, the scanning gun 5 is arranged opposite to the platform 3, the side edge of the platform 3 is provided with an acceleration sensor 6, and the acceleration sensor 6 is used for collecting vibration waveforms of the linear motor 9 (the vibration waveforms can reflect acceleration attenuation conditions when the linear motor 9 stops being electrified).
The PC 1 comprises a controller, a data acquisition card, a data analysis module and an IO card which are mutually connected, and one end of the power supply driving line 4 and the scanning gun 5 are connected with the controller; the acceleration sensor 6 is connected with the data acquisition card through a data acquisition cable so that the acceleration sensor 6 can transmit acquired vibration waveform data to the data acquisition card; the data analysis module calculates a parameter Q capable of reflecting the damping condition of the linear motor 9 according to the acquired acceleration damping data when the linear motor 9 stops. The calculation formula of the parameter Q is as follows:
F0＝(1/(tpeak2-tpeak1)+1/(tpeak3-tpeak2)+1/(tpeak4-tpeak3))/3
Slope＝(20*((log10(peak2)-log10(peak1))/(t2-t1))+20*((log10(peak3)-log10(peak2))/(t3-t2))+20*((log10(peak4)-log10(peaks3))/(t4-t3)))/3
Q＝(-27.3*F0)/Slope；
F0 is the self-resonant frequency of the linear motor 9, and peak n is the displacement corresponding to the n+1th peak in the vibration waveform after the linear motor 9 is powered off; tpeak n is a time corresponding to the (n+1) th peak in the vibration waveform after the linear motor 9 is stopped being energized; slope is the Slope of the peak decay.
The dispensing quantity controller 7 is connected with the IO card, and the PC 1 can control the dispensing quantity controller 7 to release different quantities of air pressure according to the obtained Q value, so that different quantities of magnetic liquid are injected into the linear motor 9. After filling, damping test and Q value calculation can be carried out on the linear motor 9 again, and if the Q value does not meet the standard, a corresponding amount of magnetic liquid is filled according to the new Q value until the Q value meets the standard.
Preferably, the linear motor magnetizing liquid device further comprises an audible and visual alarm, and the audible and visual alarm is connected to the IO card. The controller judges that the magnetic liquid filling is finished according to the real-time monitoring data, and the PC screen 10 displays the PASS and gives out an audible and visual alarm; to prompt the staff to replace the next linear motor 9.
Example two
The embodiment is a method for adding magnetic liquid to a linear motor, which comprises the following steps:
s1, loading a linear motor 9 on the platform 3, and connecting a power supply driving line 4 with the linear motor 9; the scanning gun 5 is used for scanning the two-dimensional code on the linear motor 9, and the scanning gun 5 transmits the scanned two-dimensional code information to the PC 1 and stores the information.
S2, starting a power supply driving line 4, electrifying the linear motor 9 for a short time, and simultaneously acquiring vibration waveform data of the linear motor 9 by the acceleration sensor 6 and transmitting the vibration waveform data to the PC 1;
s3, the PC 1 calculates a parameter Q according to vibration attenuation data after the linear motor 9 is powered on and stopped, wherein the parameter Q is inversely proportional to damping, and a calculation formula of the parameter Q is as follows:
F0＝(1/(tpeak2-tpeak1)+1/(tpeak3-tpeak2)+1/(tpeak4-tpeak3))/3
Slope＝(20*((log10(peak2)-log10(peak1))/(t2-t1))+20*((log10(peak3)-log10(peak2))/(t3-t2))+20*((log10(peak4)-log10(peaks3))/(t4-t3)))/3
Q＝(-27.3*F0)/Slope；
As shown in fig. 2, F0 is the self-resonant frequency of the linear motor 9, and peak n is the displacement corresponding to the n+1th peak in the vibration waveform after the power-on of the linear motor 9 is stopped; tpeak n is a time corresponding to the (n+1) th peak in the vibration waveform after the linear motor 9 is stopped being energized; slope is the Slope of the peak decay;
s4, presetting the magnetic liquid adding amount and the qualified value range corresponding to the Q values of different sections, judging the section corresponding to the calculated parameter Q, and controlling the adhesive dispensing device to release the magnetic liquid corresponding to the section;
S5, if the calculated parameter Q is not in the qualified value range, repeating the steps S2-S4 until the calculated parameter Q is in the qualified value range; if the calculated parameter Q is within the acceptable value range, the PC screen 10 displays a PASS and gives an audible and visual alarm, and the next linear motor 9 can be replaced.
In summary, the linear motor magnetizing liquid device provided by the invention can automatically complete the process of magnetizing liquid of the linear motor by only manually placing the linear motor magnetizing liquid device on the platform 3 of the device and connecting the linear motor magnetizing liquid device with the power supply driving line 4, and compared with the manual repeated filling and testing in the prior art, the linear motor magnetizing liquid device provided by the invention has the advantages that the operation steps are simple and the time is shorter; the method for adding the magnetic liquid to the linear motor can add accurate magnetic liquid to different linear motors 9, and avoid the waste of the magnetic liquid.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent changes made by the specification and drawings of the present invention, or direct or indirect application in the relevant art, are included in the scope of the present invention.
Claims (8)
1. The method for adding magnetic liquid to the linear motor by adopting the linear motor magnetic liquid adding equipment is characterized in that the linear motor magnetic liquid adding equipment comprises a PC, a power supply driving line for driving the linear motor, a platform for placing the linear motor, an acceleration sensor and a glue dispensing device, wherein the PC comprises a data acquisition card, a data analysis module and an IO card which are connected in sequence; one end of the power supply driving line is connected to the PC; the acceleration sensor is fixed on the platform and is in communication with the data acquisition card; the IO card is connected with the dispensing device, and the dispensing device is arranged above the platform;
The method comprises the following steps:
s1, a PC machine is used for powering on a linear motor in a short time through a power supply driving wire, and meanwhile an acceleration sensor is used for collecting vibration waveform data of the linear motor and transmitting the vibration waveform data to the PC machine;
S2, the PC calculates a parameter Q according to vibration attenuation data after the linear motor is electrified and stopped, wherein the parameter Q is inversely proportional to damping, and a calculation formula of the parameter Q is as follows:
F0＝(1/(tpeak2-tpeak1)+1/(tpeak3-tpeak2)+1/(tpeak4-tpeak3))/3；
Slope＝(20*((log10(peak2)-log10(peak1))/(t2-t1))+20*((log10(peak3)-log10(peak2))/(t3-t2))+20*((log10(peak4)-log10(peaks3))/(t4-t3)))/3;
Q＝(-27.3*F0)/Slope；
F0 is the self-resonant frequency of the linear motor, peak n is the displacement corresponding to the n+1th peak in the vibration waveform after the linear motor is stopped; tpeak n is a time corresponding to the n+1th peak in the vibration waveform after the energization of the linear motor is stopped; slope is the Slope of the peak decay;
S3, controlling the dispensing device to release a corresponding amount of magnetic liquid according to the calculated parameter Q.
2. The method for magnetizing a linear motor according to claim 1, wherein the step S3 is specifically: the method comprises the steps of presetting the magnetizing liquid quantity and the qualified value range corresponding to Q values of different sections, judging the section corresponding to the calculated parameter Q, and controlling the adhesive dispensing device to release the magnetizing liquid quantity corresponding to the section.
3. The method of magnetizing a linear motor of claim 2, further comprising the step of S4: repeating the steps S1-S3 until the calculated parameter Q is within the acceptable value range.
4. The method for magnetizing a linear motor of claim 3, wherein the step S4 further comprises: and if the calculated parameter Q is in the qualified value range, displaying the PASS on a screen of the PC and sending out an audible and visual alarm.
5. The method for magnetizing a linear motor of claim 1, further comprising, prior to step S1: and scanning the two-dimensional code on the linear motor by using a scanning gun, and transmitting the scanned two-dimensional code information to a PC by using the scanning gun and storing the scanned two-dimensional code information.
6. The linear motor magnetizing method of claim 1, wherein the linear motor magnetizing apparatus further comprises a scanning gun; the PC also comprises a control module, and the scanning gun, the data acquisition card and the power supply driving line are all connected to the control module.
7. The method for adding magnetic liquid to a linear motor according to claim 1, wherein the dispensing device in the linear motor magnetic liquid adding apparatus comprises a dispensing amount controller and a magnetic liquid container, and the dispensing amount controller comprises an air pressure outlet; the magnetic liquid container comprises a magnetic liquid outlet; the air pressure outlet is connected with the magnetic liquid container through an air duct.
8. The method of claim 1, wherein the linear motor magnetizing liquid device further comprises an audible and visual alarm, the audible and visual alarm being connected to the IO card.
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| CN201710705675.XA CN107515574B (en) | 2017-08-17 | 2017-08-17 | Linear motor magnetically-liquid adding device and method |
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| CN103135474A (en) * | 2011-11-24 | 2013-06-05 | 西安中科麦特电子技术设备有限公司 | Control system of automatic dispensing machine |
| CN205333824U (en) * | 2016-01-25 | 2016-06-22 | 信利光电股份有限公司 | Detecting system of linear motor |
| CN207249420U (en) * | 2017-08-17 | 2018-04-17 | 深圳市信维通信股份有限公司 | Linear motor adds magnetic liquid equipment |
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| JP2966433B2 (en) * | 1989-07-19 | 1999-10-25 | 株式会社日立製作所 | Magnetic fluid bearing device or motor equipped with this device |
| DE19944330A1 (en) * | 1999-09-15 | 2001-03-22 | Mannesmann Vdo Ag | Level sensor |
| JP2006283964A (en) * | 2004-08-20 | 2006-10-19 | Kura Gijutsu Kenkyusho:Kk | Shaft fixed type dynamic pressure fluid bearing motor and recording disc device |
| KR101732636B1 (en) * | 2010-08-23 | 2017-05-24 | 주식회사 코베리 | Linear motor |
| CN103084894A (en) * | 2012-12-13 | 2013-05-08 | 青岛宙庆工业设计有限公司 | Electromagnetic hydraulic clamping device |
| CN105680662B (en) * | 2016-03-28 | 2018-07-20 | 歌尔股份有限公司 | Linear vibration electric motor |
| CN205847042U (en) * | 2016-06-23 | 2016-12-28 | 瑞声科技(新加坡)有限公司 | Vibrating motor |
| CN106052998B (en) * | 2016-07-14 | 2020-01-31 | 深圳市信维通信股份有限公司 | Testing system of vibrator |
| CN106208602A (en) * | 2016-07-28 | 2016-12-07 | 深圳市信维通信股份有限公司 | Linear vibration motor |
| CN106772051A (en) * | 2017-03-13 | 2017-05-31 | 信利光电股份有限公司 | A kind of system and method for obtaining linear motor resonant frequency |
| CN106877618A (en) * | 2017-03-28 | 2017-06-20 | 歌尔股份有限公司 | Linear vibration motor and electronic equipment |
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| CN103135474A (en) * | 2011-11-24 | 2013-06-05 | 西安中科麦特电子技术设备有限公司 | Control system of automatic dispensing machine |
| CN205333824U (en) * | 2016-01-25 | 2016-06-22 | 信利光电股份有限公司 | Detecting system of linear motor |
| CN207249420U (en) * | 2017-08-17 | 2018-04-17 | 深圳市信维通信股份有限公司 | Linear motor adds magnetic liquid equipment |
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