TW488125B - Method for measuring the sensitive electromotive force to verify the quality of rotator magnetization - Google Patents

Abstract

The present invention provides a method for measuring the sensitive electromotive force to verify the quality of rotator magnetization, which pre-manufactures a standard stator of a motor for use as a measurement standard, and further wound a set of sensitive coil on the standard stator, so that, when the rotator under test is combined with the standard stator and rotated by a driver, the sensitive coil can detect the anti-electromotive force signal generated by the rotator, thereby determining the quality of the rotator. Because the present measurement method is a closed circuit detection when the rotator is combined with the stator, the result is very close to the phenomenon of actual motor rotation, and the detection is convenient without encountering an axis aligning problem, thereby increasing the manufacturing efficiency of the manufacturing lines.

Description

独 125 V. Description of the invention (1) [Scope of application of the invention] The present invention relates to a method for identifying the quality of a motor. 7 It relates to a method of winding an induction coil on a stator ^: a method for identifying whether a rotor is magnetized. [Background of the invention], the current information recording media has a trend towards high storage density, and the requirements for the transmission speed of secondary materials must also be faster and faster. In contrast, the spindle motors of access devices such as DVD The speed of rotation also needs to be matched accordingly, μ κ or, the characteristics and quality of the spindle motor are very important. One of the characteristics of Jing's motor is the back-emf constant. Under the MKS system, the number of constants Ke constant Kt (t (^ qUe⑶nstant)) is the same. Because the back-EMF value 1 torque? The external voltage is negative. External potential: ^ Constant: Only the back-EMF can make the motor run in generator mode. From this we can know that the external voltage will be changed to provide the motor coil. Current makes torque; and :: momentum is intuitive. I seem to think that choosing a Kt: Da Zai = a small current to get the rated torque ', but you can use the same haircut, in this case, you can go outside According to the electric power, there are two types of b 佶 and i — the person who leads the field will be lower. There are two main ways to determine the speed of the motor that affects the speed of the motor and the value of the torque of i: : Picture "'The first is to use a pulsation; 11 books / private to measure the back electromotive force of the stator in the motor 12 (Eb is shown in the figure; ...", 1, the original moving branch 1W to wait Just the motor 12 rotates, and which 125

V. Description of the invention (3) The rotor to be tested is combined with a standard stator, and the -drive is used to:,;: The voltage is applied to the driving coil to cause the rotor to be tested to rotate. Such an anti-band 2 is induced by the sensing coil. The rotation produced by the rotor under test is turned: the Π signal 'takes the back-EMF signal and converts it to-with the physical signal of Marxon's,' calculates the back-EMF signal and the m-constant of the object, thus achieving identification The purpose of the quality of the motor is easy to understand. The following ^ ^: t ^ 's, characteristics, and advantages can be explained in more detail as follows: Niu Jiaguan's example, and in conjunction with the accompanying drawings, make [invention embodiment description] Production: : 23 2: According to the technology disclosed in the present invention, the quasi-stator 22 is based on a plurality of stators / sub-21s, and the number of stator teeth 222 is the same as the standard ^ 221 = to separate the plurality of stator slots 221 In addition to having the drive coil 23, the plurality of stator teeth 222 are divided by the turns 24. When a driver 3 is wound on it, a set of induction wires drive the electromagnetic effect of the paste = ㈣ voltage to the standard stator 22, due to 2 to generate different electromagnetic poles, and there is no drive 'coil ㈡ ... ^ 2 rotor 2 The magnetic pole of the upper magnet has the magnetic pole of H_222 and will rotate on the standard stator 22 to be measured. In the case of making the rotor 21 to be tested between standard stators 22, the rotor 21 to be tested senses the back-EMF signal and outputs it to the above-mentioned sensing coil 24.

Page 6 V. Description of the invention ⑷ c The detection method invented can be used in 4 houses. Different types of motors and motors, if it is right, is the number of phases of its drive voltage ^ "the spindle motor of the optical disc drive, the rotor and the stator, as long as the motor products to be tested have inspection. In order to use the method of the present invention to make the product f when it is actually tested, the private Λ is listed below. The following is a diagram of the signal transmission wheel of the two-phase motor. The dry example is clear: please refer to Zhaochang No. 86'Hv and let drive 3. Judging the target component signal to the driver 30. According to the result of the judgment, it will be: Electric Temple II = which position to rotate to, 81, V-phase voltage 82 or W-phase electric 3, = ^ and the point is allocated to the change of the M-mesh voltage phase It can be adjusted by driving the driving voltage 80 signal 90. Special speed can also be driven into the drive 3 by wheels. In short, the positioning of the upper and lower rotors 21, No. 86, 87, is used to add a 'coding cry' method to the motor. In addition, the invention can be carved with small holes on the wall surface. "Two" at the same time on the rotor 21 line, and then cooperate with the small run and light :: to light the rotor 21 for the purpose of light or bit. The interaction between the spring or the power line, and ^ as for the winding of the __coil 24 in the present invention The method can be based on its motor. Page 7 488125 V. Description of the invention (5) Reality: The conditions at Γ are variously changed, and the following is also based on the three-phase two: So = explained. Please refer to "5A phase paste, here The fixed driving slot 221 and the three driving coils 2 3 of the fixed weight 2 make two oblique windings alternately on the slope 1

^ ^. t V; /;. V Inductive coil 24 is wound on the sub-tooth 222 = can be only on one of the stator teeth 222, or as the "three degrees in the U ° phase = wrapped in a fixed U phase It is the stator tooth 222 of the single phase, as shown in the figure, and it is wound around three adjacent U phases and two ν phases. The second phase is shown in Figure 5C, and the second phase is shown in Figure 5D. , At the same time; on the Λ Li 'can also be on the teeth 222. For the adjacent U-phase and V-phase stators, one: i: column :: The embodiment is only a F-knife in the present invention, in other words, using a square, a winding ring or a price 6; a ::: or: a W-phase The anti-private momentum entangled in 12 can be offset: the back-EMF of the induction line will not be two-phase, V-phase and w-phase stator teeth. If it is a simultaneous type, according to Zhao: ' In other words: * The biphasic and biphasic sensed by the residual library in the invention; and ㉟ 'can be the twine of the ancient meaning 4 of the ancient squares, and even multiphase single-tooth, single-phase multi-tooth , .. "Month U, Figure 6" is a motor of Λ Taiba, the multi-tooth equal square Λ-

Block diagram, when the user wants to test the Ltn ::-system i:; L's rotor is 488125 V. Description of the invention (6) If it meets the specification requirements, just place the rotor 2 to be tested on the standard stator 2 by This is combined into a temporary motor 20, and then one is pressed. As the test key 451 on the interface 45, the control unit 40 turns on the a ^ signal, and the command signal passes through a digital / analog signal converter 51. "The two signals are converted into analog signals and turned out of the driver 3". In accordance with the requirements of the signal, the driver 提供 provides three-phase driving voltages 8 彳 and s 9 (assuming that a three-phase motor 2 is also tested.) Λ2 = to the motor 20%. Υ ^ § As before Jin Cheng, the motor 20 will also feed back the three-phase Hall element signals 86, 87, 88 to 30 to maintain the rotation of the motor 20 or control the speed of the motor 20. ς Up to 20 rotations-period of time | The measuring coil 24 will sense a one or two: potential signal and output it to a detector 60. The counter-electromotive surface is converted by an analog / digital signal converter 51 ', and the digital signal is converted into The output is in the control unit 40, and the other side ~ Hedan is converted into the amplifier 7. At the same time, the back-EMF signal is captured: Zhao: f-calculates the physical quantity that is positively related to the rotation speed, and also turns out to be: As long as the control unit 40 integrates the obtained back-EMF message: 'Wu 40 is positively correlated at this time' Physical quantity, and the reference drive: Fuji: Motor speed ratio, you can convert the motor 20 and the E of the induction coil 24

Ke 'and output it to the back electromotive force constant on the operation interface 45. As long as the display 452 is observed, it can be judged that the user is good or bad. The magnetizing quality of the other rotors 21 is the same. In the embodiment described in the "Figure 6", the driver 30 itself does not have ^ which is the present invention-this can also turn the back EMF signal directly. In the role, because of> 30% of Le Zhai, and driving the 30 through the 9th page to shape the 30 square wave that needs to be processed, the effect will be the above-mentioned invention in the law, will produce a small After the small rotor 21 to be tested has turned, the current excitation signal of the coil 23 itself has a small excitation effect, and the purpose of the present invention is not to determine the amount of the produced motor 20, as long as it is calculated in its rotation. , It can be accepted as the [effect of the invention] The advantages of the original driving coil disclosed in the present invention are: 1 · The present invention is the result of this measurement. 2 · The present invention can be produced without the question of the shaft. The physical quantity wheel is out of the control unit 40, but the driving result will be poor, as shown in the "Figure 6", it is better to pull another. + Tooth 2 2 2 Fang Que Aizhan · Rong Hong, who is also wound with an induction coil 2 4. ,,, • Qian Ying coil 2 4 is not only a magneto-generated back-EMF signal, but also a drive, ' Therefore, the output will be different from the pure back-electricity. ^ Due to the current test results of the inductive coil 24, it is apparent that the clothing-staff member only accounts for about one tenth, and / I1] — ^ 〇 The electromotive force constant is the meaning of & ^ > &, _ e ^ meaning, so, in actual application, the momentum constant is only a product that is qualified in a standard range. Fang Xi and Fang Xi even do 1 ', first make a standard stator, and in 9 groups of induction coils, it has the following closed-loop detection under combination, because the white and back electromotive force constants are close to the real motor rotation. Rotor inspection, the inspection method is convenient and the problem can save time and cost and speed up the production line

Page 10 488125 V. Description of the invention (8) Although the present invention has been disclosed as above with several preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art will not depart from the spirit and scope of the present invention. As some changes and retouching can be made, the scope of protection of the present invention shall be determined by the scope of the attached patent application.

Page 11 488125 Schematic description [Schematic description] Figure 1 shows the intention of the conventional back-EMF measurement method of the first measurement motor, Figure 2 shows the conventional second measurement motor of the measurement method The intention of the back-EMF method, FIG. 3 is a schematic diagram showing the back-EMF method of measuring the motor of the present invention, and FIG. 4 is a schematic diagram of the signal transmission of the “3rd graph”; FIG. 5A is a graph illustrating the present invention Schematic diagram of the first winding mode of the middle induction coil; FIG. 5B shows the intention of the second winding mode of the induction coil in the present invention, and FIG. 5C shows the third winding mode of the induction coil in the present invention A schematic diagram of the winding mode; FIG. 5D illustrates a schematic diagram of the fourth winding mode of the induction coil in the present invention; and FIG. 6 illustrates a functional block diagram of the system applied to the present invention. [Illustration of Symbols in the Schematic Diagrams] 11 ..... prime mover 12 ........ motor to be tested 13 ................................................................................................................... ....... motor 21 .................. rotor to be tested

Page 12 488125 Schematic description 22 ........ Standard stator 221 ........ Stator slot 2 22 ........ stator teeth 23 .....'........ drive coil 24 ..... ............. Induction coil 3 0 ............ Driver 4 0 .............. ....... Control unit 4 5 ........ Operating interface 4 51 ....... .Test key

45 2 ........ Display 51 ............ Digital / Analog Signal Converter 52 ......... ... Analog / Digital Signal Converter 6 0 ................... Detector 70 ...... .Operational amplifier 80 ........ Drive voltage 81 ........ U-phase voltage 82 ... ......... V-phase voltage 83 ........ W-phase voltage

8 6 ............. H u Hall element signal 87 .............. ν Hall element signal 8 8 ...... ....... H w Hall element signal 90 ...... Speed control signal

Page 13

Claims (1)

488125 VI. Application for Patent Scope 1. A method for measuring the induced electromotive force of a motor to identify the magnetization of the rotor. The method is to determine the quality of the rotor of the motor by detecting the back-EMF constant of the motor, which includes: making a standard stator of the motor, the The standard stator has at least one phase of driving coils, and a set of induction coils are wound thereon; a rotor of a motor to be tested is combined with the standard stator, and a driver is used to provide at least one phase of driving voltage to the corresponding standard stator. The driving coil makes the rotor to be tested rotate; The rotor under test generates a back-EMF signal and outputs it through the induction coil; captures the back-EMF signal and converts it into a physical signal related to the motor speed; and integrates the back-EMF signal, the physical signal, and the drive coil Compared with the number of turns of the induction coil, the back electromotive force constant of the motor is calculated. 2.Measure the motor induced electromotive force as described in item 1 of the scope of patent application. A method for discriminating the magnetization of a rotor, wherein the standard stator is composed of a plurality of stator slots and the same number of stator teeth separating the plurality of stator slots. 3. The method of measuring the motor induced electromotive force to identify the magnetization of the rotor as described in item 2 of the scope of the patent application, wherein the at least one phase of the driving coil is evenly wound on the plurality of stator teeth, and the at least one phase is used. The driving voltage of one phase causes the plurality of stator teeth to generate at least one phase of electromagnetic poles. Page 14 488125 6. Application patent scope 4. The method of measuring the motor induced electromotive force as described in item 2 of the patent application scope to identify the rotor magnetization is good or bad, wherein the induction coil is wound at least among the plurality of stator teeth Must be on the teeth. 5. The method of measuring the motor's induced electromotive force to identify whether the magnetization of the rotor is good or bad as described in item 1 of the scope of the patent application, wherein the motor further outputs at least one Hall element signal to the driver to inform the driver that it should wait The position of the rotor is measured to determine the phase of the drive voltage input to the motor. 6. The method of measuring the induced electromotive force of a motor to identify the magnetization of a rotor as described in item 5 of the scope of patent application, wherein the number of the Hall element signals is the same as the number of phases of the driving voltage. 7. The method of measuring the motor induced electromotive force to identify the rotor magnetization as described in item 1 of the scope of the patent application, wherein an encoder is added to the motor to locate the position of the rotor to be tested. , And feedback output to the driver, so determine the phase of the drive voltage input to the motor. 8. The method of measuring the motor induced electromotive force to identify the magnetization of the rotor as described in item 7 of the scope of the patent application, wherein the encoder is a small hole projected on the wall of the rotor to be tested by projecting light or power lines, And determine the position of the rotor to be tested. 9. The method of measuring the induced electromotive force of a motor as described in item 1 of the scope of patent application to identify the magnetization of the rotor, wherein the back-EMF signal sensed by the induction coil of the motor is output through a detector to a control unit. Page 15 Scope of patent application 0. If applied to identify the signal of the motor output unit 1, if applied for a patent. Rotor charger converter or the like. Please apply for a patent to identify the rotor charging speed control signal speed. 2. If you apply to identify the drive, control the drive 3. If you apply to identify the face, the user 4. If you apply to the test to identify a test 5, If you apply to the physical identification, please patent the unit between the rotor and the charger . Please refer to the rotor charging operation of the patented rotor key and the patented rotor control signal, and the patented rotor charging signal, the range of the magnetic field is increased by a digital range. The magnetic field is included in the manufacturing unit range. The output field is magnetized. The good or bad is a method of measuring the motor induced electromotive force magnetism according to item 9 of the 13-way device of the 9-way range. The method described in item 9 of the 9-way range, in which an analogy / count is added to the motor and The control unit is used to convert the ratio signal into a digital signal and output it in the method of measuring the motor induced electromotive force magnetism according to item 9 of the control range, wherein the control unit can be turned on or off to the driver Therefore, the method for controlling the motor's induced electromotive force as described in item 9 of the control of the motor, wherein the control unit and a digital / analog signal converter are used to convert the signal to an analog signal, and rotate the The method of measuring motor induced electromotive force is to add an operation intervention device and output device, and a communication interface. The method for measuring motor induction according to item n, wherein the input device is a display.糸 is the measurement motor induction method described above, where the conversion of the motor to the 4 potential nose amplifier and the wheel + shoulder out to the 488125 Page 17