KR950007108Y1 - Apparatus of signal generator for velouty control - Google Patents
Apparatus of signal generator for velouty control Download PDFInfo
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- KR950007108Y1 KR950007108Y1 KR2019890007352U KR890007352U KR950007108Y1 KR 950007108 Y1 KR950007108 Y1 KR 950007108Y1 KR 2019890007352 U KR2019890007352 U KR 2019890007352U KR 890007352 U KR890007352 U KR 890007352U KR 950007108 Y1 KR950007108 Y1 KR 950007108Y1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
- G01D5/2006—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the self-induction of one or more coils
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/242—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by carrying output of an electrodynamic device, e.g. a tachodynamo
Abstract
내용 없음.No content.
Description
제1a, b는 본 고안 장치의 구조설명도.1a, b is a schematic diagram of the device of the present invention.
제2도는 본 고안 장치의 다른실시예의 구조 설명도.Figure 2 is a schematic diagram of another embodiment of the device of the present invention.
제3도는 본 고안에서 시계방향 및 반시계 방향 회전시 주파수 발생용 코일의 출력 파형도.3 is an output waveform diagram of the coil for frequency generation in the clockwise and counterclockwise rotation in the present invention.
제4도는 제3도의 증폭 파형도.4 is an amplified waveform of FIG.
제5도는 종래의 회전체의 개략 단면도.5 is a schematic cross-sectional view of a conventional rotating body.
제6도는 종래장치의 로우터의 주파수 발생 착자 상태를 설명하는 도면.6 is a diagram illustrating a frequency generating magnetization state of a rotor of a conventional apparatus.
제7도는 종래장치의 주파수 발생 코일 구조설명도.7 is a schematic diagram of a structure of a frequency generating coil of a conventional apparatus.
제8도는 일반적인 주파수 발생기의 원리를 설명하는 도면.8 illustrates the principle of a general frequency generator.
본 고안은 회전체에 있어서의 속도제어를 위한 신호발생 장치에 관한 것으로서, 특히 전기각으로 90°위상차를 갖는 신호와 기준신호를 이용하여 기존의 2배 주파수를 갖는 속도제어용 신호를 얻어 정밀하게 속도제어를 행함과 동시에 기준신호와 전기각으로 90°위상차를 갖는 신호의 위상을 비교함으로써 회전체의 회전방향을 감지할 수 있도록 한 회전체의 속도제어용 신호발생 장치에 관한 것이다.The present invention relates to a signal generating device for speed control in a rotating body, and in particular, by using a signal having a 90 ° phase difference at an electrical angle and a reference signal, a speed control signal having a conventional double frequency is obtained precisely. The present invention relates to a signal generator for controlling the speed of a rotating body which can sense the rotational direction of the rotating body by performing control and comparing the phase of a signal having a 90 ° phase difference with an electrical angle at the same time.
종래에 있어 회전체의 속도검출 장치는 제5도에 나타낸 바와같이 속도제어를 위한 신호를 발생시키는 주파수 발생용 마그네트(이하 FG 마그네트라 약칭함)와 FG마그네트의 회전에 따른 자속변화에 의하여 유도 기전력이 발생하도록 FG 마그네트와 대향하는 방향에 위치한 선소의 집합(이하 FG코일 이라 칭함)으로 구성된 것이며, 상기한 FG 코일은 제7도에서와 같이 일반적으로 1회전시의 FG 신호의 주파수를 보다 높게하기 위하여 FG 마그네트 극의수와 동일한 계수의 선소를 갖는 1개의 FG 코일인 것이다.Conventionally, the speed detecting device of a rotating body has an induced electromotive force due to the change of the magnetic flux according to the rotation of the frequency generating magnet (hereinafter abbreviated as FG magnet) and the FG magnet to generate a signal for speed control as shown in FIG. This is composed of a set of elements (hereinafter referred to as FG coil) located in a direction opposite to the FG magnet so that the FG coil, as shown in FIG. 7, generally increases the frequency of the FG signal at one rotation higher. For this reason, it is one FG coil having elements of the same coefficient as the number of poles of the FG magnet.
예들 들어 로우터가 1회전 할때의 발생주파수를 f라할 경우, FG마그네트의 착자국수는 2f로 된다.For example, if the frequency generated when the rotor rotates once is f, the number of magnets in the FG magnet is 2f.
그 이유는 1쌍의 FG 마그네트 간격만큼 이동할때 1주기의 FG 신호가 발생하기 때문에 1회전시의 발생주파수(f)에 따라 f쌍의 FG 마그네트극인 2f개의 자극이 착자되며, 여기서 1개의 극의 각도 θ는 제7도에 나타낸 바와 같이 360°/2f로 되고, 이에따라 FG코일도 동일한 각도로 등분된 선소의 연결로 이루어진다.The reason is that since one cycle of FG signal is generated when moving by one pair of FG magnets, 2f magnetic poles, which are f pairs of FG magnet poles, are magnetized according to the frequency f generated at one rotation. The angle θ becomes 360 ° / 2f, as shown in FIG. 7, whereby the FG coil is also made up of a line segment equally divided at the same angle.
여기서 2은 파워용 마그네트, 4는 구동용 코일, 5는 PCB 또는 강판, 6은 축을 나타낸다.2 represents a power magnet, 4 represents a driving coil, 5 represents a PCB or a steel sheet, and 6 represents an axis.
이러한 종래 장치의 동작관계를 설명하면 다음과 같다.The operation relationship of such a conventional device is as follows.
제5도에서 로우터(Rotor)(7)가 회전함에 따라 로우터(7)에 장착되어 있는 FG마그네트(1)도 따라서 회전하게 되어 스테이터(stator)측의 FG코일(3)면상에서 FG 마그네트(1)의 자속밀도의 변화가 발생되고 이는 렌즈의 법칙에 의하여 FG 코일(3)에 유도 기전력이 발생된다.In FIG. 5, as the rotor 7 rotates, the FG magnet 1 mounted on the rotor 7 also rotates so that the FG magnet 1 on the surface of the FG coil 3 on the stator side. ), A change in magnetic flux density is generated, which induces an electromotive force in the FG coil 3 by the law of the lens.
즉, 제7도에 나타낸 FG 마그네트(1)와 FG 코일(3)을 직선상에 펄쳐서 나타내면 제8도에서와 같이 홀수 번째(1, 3, 5, 7, …)의 선소에서 발생되는 유도 기전력과 짝수번째(2, 4, 6, 8, …)에서 발생되는 유도 기전력의 방향이 서로 다르지만 FG 코일의 연결 방향이 각 선소로부터 발생된 전류가 형성되는 방향이기 때문에 FG 코일의 출력단자에는 FG 출력신호가 나타나게 된다.In other words, when the FG magnet 1 and the FG coil 3 shown in FIG. 7 are shown on a straight line, the induction generated at odd-numbered lines (1, 3, 5, 7, ...) as shown in FIG. Although the directions of the electromotive force and the induced electromotive force generated in the even number (2, 4, 6, 8, ...) are different from each other, the connection direction of the FG coil is the direction in which the current generated from each line is formed. The output signal will appear.
즉, FG 마그네트가 N극에서 S극, 또는 S극에서 N극으로 변경될때에 홀수번째의 선소에서 발생되는 전류의 방향과 짝수번째의 선소에서 발생되는 전류의 방향은 서로 반대가 되지만 FG 코일의 연결은 전체적으로 동일 방향으로 전류가 흐르도록 구성되어 있기 때문에 FG 출력은 각 선소에서의 유도 기전력이 합성되어 나탄나게 된다.That is, when the FG magnet is changed from the N pole to the S pole, or the S pole to the N pole, the direction of the current generated in the odd-numbered element and the direction of the current generated in the even-numbered element are opposite to each other. Since the connections are configured to flow current in the same direction as a whole, the FG output is combined with the induced electromotive force at each line.
이 경우에 1회전시의 주파수는 FG 마그네트의 극수가 짝수(n)일 경우펄스/회전으로 된다.In this case, the frequency at one revolution is an even number (n) of poles of the FG magnet. Pulse / rotation.
이때 발생한 FG 출력은 미세하므로 증폭하여 구형파로 만든후 회전에 속도를 제어하기 위한 신호로서 사용된다.The FG output generated at this time is minute, so it is amplified into a square wave and used as a signal to control the speed of rotation.
그러나, 이와 같은 종래의 장치는 회전체의 속도 변등을 작게하기 위한 1회전시의 FG신호가 많아서 정밀속도의 제어에는 유리한면이 있으나, 실제로는 FG 마그네트 착자극수 및 FG 코일이 등분이 가능한 정도로 제한을 받게 되고, 또한 로우터(7)가 시계회전 방향 또는 반시계 회전방향으로 회전하더라도 하나의 FG 신호에서는 회전방향을 감지할 수 없는 문제점이 있었다.However, such a conventional device is advantageous in controlling precision speed due to the large number of FG signals in one revolution for reducing the speed variation of the rotating body, but in reality, the FG magnet magnetizing stimulation number and the FG coil can be divided into equal parts. In addition, even if the rotor 7 rotates in the clockwise or counterclockwise direction, there is a problem in that one FG signal cannot detect the rotational direction.
본 고안은 이러한 종래의 문제점을 해소하기 위하여 로우터의 FG 마그네트 착자간격과 동일한 간격을 갖는 선소의 집합으로 되고, 기계각으로 FG 마그네트 착자간격을 2등분한 만큼의 위상차를 갖는 2개의 FG 코일을 마련하여 회전체의 정밀속도의 제어는 물론 회전방향도 감지할 수 있도록 함을 목적으로 하는 것으로서, 이하 첨부된 도면에 의하여 본 고안을 상세히 설명하면 다음과 같다.In order to solve this problem, the present invention is a set of elements having the same spacing as the rotor's FG magnet magnetization interval, and provides two FG coils having a phase difference equal to two times the FG magnet magnetization interval at the machine angle. By the purpose of detecting the rotational direction as well as the control of the precise speed of the rotating body, the present invention will be described in detail by the accompanying drawings as follows.
제1a, b도에서와 같이 본 고안 장치는 로우터의 FG 마그네트 착자간격(0m)과 동일한 간격을 갖는 선소(10)의 집합으로 이루어지고, 기게각으로 θm/2 만큼 위상차를 갖도록 2개의 FG 코일을 형성한 것이며, 여기서 FG 마그네트는 종래의 구조와 동일한 것이다.As shown in Figs. 1a and b, the device of the present invention consists of a set of elements 10 having the same interval as the FG magnet magnetization interval (0m) of the rotor, and two FG coils so as to have a phase difference by θm / 2 at the machine angle. Where FG magnet is the same as the conventional structure.
이와 같이 된 본 고안의 작용효과를 제3도 및 제4도를 참조하여 설명하면 다음과 같다.Referring to Figure 3 and Figure 4 the effect of the present invention made as described above are as follows.
우선, 제5도에 나타낸 바와같이 로우터(7)가 회전함에 따라 FG 마그네트(1)로 회전하게 되며, FG 마그네트(1)와 대향하는 FG 코일(3)에 유도 기전력이 유기된다.First, as shown in FIG. 5, as the rotor 7 rotates, the rotor 7 rotates to the FG magnet 1, and induced electromotive force is induced in the FG coil 3 facing the FG magnet 1.
이때 2개의 FG 코일(A), (B)은 제1도에 나타낸 바와 같이 기계각으로 θm/2 만큼 어긋나서 형성되어 있는 것이어서, 2개의 FG 코일(A), (B)의 출력신호는 제3도에 나타낸 바와 같인 같이 전기각으로 90°의 위상차를 가지게 된다.At this time, the two FG coils (A) and (B) are formed by shifting θm / 2 at the machine angle as shown in FIG. 1, so that the output signals of the two FG coils (A) and (B) are As shown in FIG. 3, the electric angle has a phase difference of 90 degrees.
이 경우에 시계방향으로 회전할때의 FG 코일(A)의 출력을 제3도의 A1라하고, FG 코일(B)의 출력을 제3도의 B1라고 하면 반시계 방향으로 회전할때의 FG 코일(B)의 출력은 제3도의 B1'로 나타나고, 이 신호를 증폭시키게 되면 각각 제4도외에서와 같은 구형파 신호(A2), (B2), (B2')로 나타나게 된다.In this case, if the output of the FG coil A when rotating clockwise is A 1 of FIG. 3 and the output of the FG coil B is B 1 of FIG. 3, the FG coil ( The output of B) is represented by B 1 ′ in FIG. 3, and when the signal is amplified, square wave signals A 2 , B 2 , and B 2 ′ as shown in FIG.
이와 같은 구형파 신호 (A2), (B2)를 익스클루시브 오어게이트(도시생략함)등을 사용하여 게이트 시키면 제4도에 나타내 신호(C)와 같이 FG 코일(A), (B)의 출력신호의 2배의 주파수를 갖는 신호를 생성할 수가 있다.When the square wave signals A 2 and B 2 are gated by using an exclusive or gate (not shown), the FG coils A and B are shown in FIG. It is possible to generate a signal having a frequency twice that of the output signal.
또한, FG코일(A)의 출력신호(A2)를 기준으로 하여 FG 코일(B)의 출력신호 (B2)의 위상을 서로 비교함으로써 회전체의 회전방향을 감지할 수가 있는 것이다.In addition, by comparing the phases of the output signal (B 2 ) of the FG coil (B) on the basis of the output signal (A 2 ) of the FG coil (A), it is possible to detect the rotation direction of the rotating body.
제2도에는 본 고안의 다른 실시예를 나타낸 것으로서, 이들 기본원리는 제1a, b도와 동일하며, 다만 기계각으로 θm=360°/2f로 어긋나고 있는 2개의 FG 코일을 동일 원주상에 형성하고 있는점이 다르다.FIG. 2 shows another embodiment of the present invention, and these basic principles are the same as those of FIGS. 1a and b, except that two FG coils, which are shifted by θm = 360 ° / 2f at a machine angle, are formed on the same circumference. There is a difference.
이상에서 설명한 바와 같이 본 고안 장치에 의하면 전기각으로 90°위상차를 갖는 FG 신호와 기준신호를 이용하여 종래의 장치보다 2배의 주파수를 갖는 속도제어용 신호를 얻을수가 있는 것이어서, 보다 정밀도가 높은 속도제어를 행할 수 있을 뿐만 아니라 기준신호와 전기각으로 90°위상차를 갖는 신호의 위상을 상호 비교함으로써 회전체의 회전 방향 까지도 감지할 수 있는 일거양득의 효과를 제공하는 것이다.As described above, according to the device of the present invention, a signal for speed control having a frequency twice as large as that of a conventional device can be obtained by using a FG signal having a 90 ° phase difference at an electrical angle and a reference signal, so that a higher precision speed is achieved. Not only can the control be performed, but also the phase of the signal having a 90 ° phase difference at the electrical angle with the reference signal can be compared to provide a single benefit of detecting the rotation direction of the rotating body.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019890007352U KR950007108Y1 (en) | 1989-05-31 | 1989-05-31 | Apparatus of signal generator for velouty control |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019890007352U KR950007108Y1 (en) | 1989-05-31 | 1989-05-31 | Apparatus of signal generator for velouty control |
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| Publication Number | Publication Date |
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| KR900020782U KR900020782U (en) | 1990-12-14 |
| KR950007108Y1 true KR950007108Y1 (en) | 1995-08-28 |
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