KR100385072B1 - Resonant frequency check system for multifunction actuator - Google Patents
Resonant frequency check system for multifunction actuator Download PDFInfo
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- KR100385072B1 KR100385072B1 KR10-2000-0079463A KR20000079463A KR100385072B1 KR 100385072 B1 KR100385072 B1 KR 100385072B1 KR 20000079463 A KR20000079463 A KR 20000079463A KR 100385072 B1 KR100385072 B1 KR 100385072B1
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- 238000001514 detection method Methods 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 10
- 230000001133 acceleration Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H13/00—Measuring resonant frequency
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
- G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/282—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere
- G01R31/2829—Testing of circuits in sensor or actuator systems
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- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
본 발명은 가속도값을 측정하여 최대값을 확인하는 방법을 사용하지 않고 전류값이나 전압값과 같은 전기적 신호를 체크하여 빠르고 간단하게 공진점을 검출할 수 있도록 하는 다기능 액츄에이터용 공진주파수 검출시스템에 관한 것으로서, 다기능 액츄에이터에 100㎐ 내지 200㎐의 범위에서 변화(sweep)되는 주파수를 갖는 교류전원을 공급하는 전원공급부 및 다기능 액츄에이터의 진동용 코일(vibration coil)에 인가되는 전기적 신호 및 상기 전기적 신호의 피드백(feedback)에 의하여 주파수의 공진점을 찾는 공진점 감지 수단을 포함하여 구성된 것으로, 상기 전원공급부에서 공급되는 교류전원은 사인파(sinusoidal) 또는 구형파의 전원이며, 상기 변화(sweep)되는 주파수의 분해능(resolution)은 1㎐ 이하인 것이 바람직하다.The present invention relates to a resonant frequency detection system for a multifunctional actuator that enables the user to quickly and simply detect a resonance point by checking an electrical signal such as a current value or a voltage value without using a method of measuring an acceleration value to determine a maximum value. An electrical signal applied to an AC power supply having an alternating frequency in a range of 100 Hz to 200 Hz and a vibration signal of the multifunction actuator and an electrical signal applied to the multifunction actuator, It comprises a resonance point detection means for finding the resonance point of the frequency by a feedback, the AC power supplied from the power supply is a power source of sinusoidal or square wave, the resolution of the changing frequency is It is preferable that it is 1 Pa or less.
Description
본 발명은 다기능 액츄에이터용 공진주파수 검출시스템에 관한 것으로서, 더욱 상세하게는 전류값 또는 전압값을 체크하여 빠르고 간단하게 공진점을 검출할 수 있도록 하는 공진주파수 검출시스템에 관한 것이다.The present invention relates to a resonant frequency detection system for a multifunctional actuator, and more particularly, to a resonant frequency detection system for detecting a resonance point quickly and simply by checking a current value or a voltage value.
일반적으로, 다기능 액츄에이터(multifunction actuator)의 개발분야에 있어서 성능과 직결되는 공진점을 확인하고 관리하는 것은 필수적이다. 또한, 공진점을 체크(check)하는 것은 생산분야에 있어서도 필수적이라 할 수 있다.In general, in the field of development of multifunction actuators, it is essential to identify and manage resonance points that are directly related to performance. In addition, it can be said that checking the resonance point is also essential in the production field.
종래의 기술에서는 도 1에 도시된 바와 같이, 다기능 액츄에이터(3)에 교류전원(2)을 공급하여 가진시킨 후 진동가속도계(accelerometer;4)에서 진동량을 측정하고, 진동량이 최대로 나오는 곳의 가속도값(G값)을 측정하여 공진주파수를 확인하였다.In the prior art, as shown in FIG. 1, after supplying and exciting the AC power supply 2 to the multifunction actuator 3, the vibration amount is measured by an accelerometer 4, The resonance frequency was measured by measuring the acceleration value (G value).
이때, 주파수를 찾기 위하여 주파수 분석기(frequency analyzer;1)를 사용하는데, 상기 주파수 분석기(1)가 고가이고 측정하는 속도가 비교적 느리기 때문에 생산공정에서 적용하는 데는 여러 가지 문제점이 발생하였다.In this case, a frequency analyzer (frequency analyzer) 1 is used to find a frequency. However, since the frequency analyzer 1 is expensive and the measurement speed is relatively slow, various problems occur in the production process.
본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로서, 그 목적은 가속도값을 측정하여 최대값을 확인하는 방법을 사용하지 않고 전류값이나 전압값과 같은 전기적 신호를 체크하여 빠르고 간단하게 공진점을 검출할 수 있도록 하는 다기능 액츄에이터용 공진주파수 검출시스템을 제공하는데 있다.The present invention has been made to solve the above problems, the object of the present invention is to quickly and simply check the electrical signal such as the current value or voltage value without using the method of measuring the acceleration value to determine the maximum value The present invention provides a resonant frequency detection system for a multifunctional actuator that enables detection.
도 1은 종래 기술에서 주파수 분석기를 이용한 공진주파수 검출동작을 설명하기 위한 도면,1 is a view for explaining a resonance frequency detection operation using a frequency analyzer in the prior art,
도 2는 다기능 액츄에이터(multifunction actuator)의 구조를 나타내는 도면,2 is a view showing the structure of a multifunction actuator;
도 3은 본 발명의 일 실시예에 의한 다기능 액츄에이터용 공진주파수 검출시스템의 구성을 나타내는 도면,도 4는 본 발명의 다른 실시예에 의한 다기능 액츄에이터용 공진주파수 검출시스템의 구성을 나타내는 도면.3 is a view showing the configuration of a resonant frequency detection system for a multi-function actuator according to an embodiment of the present invention, Figure 4 is a view showing the configuration of a resonant frequency detection system for a multi-function actuator according to another embodiment of the present invention.
상기와 같은 목적을 달성하기 위한 본 발명의 특징에 따르면, 다기능 액츄에이터에 100㎐ 내지 200㎐의 범위에서 변화(sweep)되는 주파수를 갖는 교류전원을 공급하는 전원공급부와, 상기 다기능 액츄에이터의 진동용 코일(vibration coil)에 인가되는 전류나 전압과 같은 전기적 신호의 피드백(feedback)에 의하여 주파수의 공진점을 찾는 공진점 감지 수단을 포함하여 구성된 다기능 액츄에이터용 공진주파수 검출시스템을 제공한다.According to a feature of the present invention for achieving the above object, a power supply for supplying an AC power having a frequency (sweep) in the range of 100 kHz to 200 kHz to the multi-function actuator, and a coil for vibration of the multi-function actuator A resonance frequency detection system for a multifunctional actuator comprising a resonance point detection means for finding a resonance point of a frequency by feedback of an electrical signal such as a current or a voltage applied to a vibration coil.
이때, 본 발명의 부가적인 특징에 따르면, 상기 전원공급부에서 공급되는 교류전원은 사인파(sinusoidal) 또는 구형파의 전원인 것이 바람직하고, 상기 변화(sweep)되는 주파수의 분해능(resolution)은 1㎐ 이하인 것이 바람직하다.In this case, according to an additional feature of the present invention, the AC power supplied from the power supply is preferably a sinusoidal or square wave power, and the resolution of the changing frequency is 1 kHz or less. desirable.
본 발명의 상술한 목적과 여러 가지 장점은 이 기술 분야에 숙련된 사람들에 의해 첨부된 도면을 참조하여 후술되는 발명의 바람직한 실시예로부터 더욱 명확하게 될 것이다.The above objects and various advantages of the present invention will become more apparent from the preferred embodiments of the invention described below with reference to the accompanying drawings by those skilled in the art.
이하, 본 발명의 바람직한 실시예를 첨부한 도면을 참조하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.
먼저, 도 2는 다기능 액츄에이터의 구조를 나타내는 도면이고, 도 3은 본 발명에 의한 다기능 액츄에이터용 공진주파수 검출시스템의 구성을 나타내는 도면이며 도 4는 본 발명에 의한 또 다른 다기능 액츄에이터용 공진주파수 검출시스템의 구성을 나타내는 도면이다.First, Figure 2 is a view showing the structure of a multi-function actuator, Figure 3 is a view showing the configuration of a resonant frequency detection system for a multi-function actuator according to the present invention and Figure 4 is another resonant frequency detection system for a multi-function actuator according to the present invention It is a figure which shows the structure of.
상기 첨부도면 도 2에 도시된 바와 같이 다기능 액츄에이터는 진동용 코일(vibration coil;10)에 일정 주파수가 입력되어, 마그네트(magnet;11)가 부착된 진동체(12)가 공진을 일으켜 진동을 일으키고, 보이스 코일(voice coil;13) 쪽에 음향신호가 인가되어 소리를 내는 복합체이다.As shown in FIG. 2, in the multifunctional actuator, a predetermined frequency is input to a vibration coil 10 so that a vibrator 12 having a magnet 11 resonates to cause vibration. In this case, a sound signal is applied to the voice coil 13 to produce a sound.
이때, 일정 주파수로 가진되는 진동 주파수가 고정이 되어 있어 다기능 액츄에이터의 생산에 있어서, 공진 주파수를 일정하게 관리하는 것은 필수적이라 할 수 있다.At this time, since the vibration frequency at a constant frequency is fixed, in the production of the multifunctional actuator, it can be said that it is essential to constantly manage the resonance frequency.
결국, 도 2에서와 같이 진동용 코일(vibration coil;10)에 일정 주파수가 입력되면, 마그네트(magnet;11)와 요크 어세이(yoke assy;14)로 구성된 중량물이 스프링(15)에 의해 고정되어 진동을 일으킨다.As a result, when a predetermined frequency is input to the vibration coil 10 as shown in FIG. 2, a heavy object composed of a magnet 11 and a yoke assy 14 is fixed by the spring 15. To cause vibration.
이때, 공진주파수가 되면 상기 중량물의 움직이는 변위가 최대가 되어 상기 진동용 코일(10)에 인가되는 back emf.도 최대가 되어 상기 진동용 코일(10)에 인가되는 전류는 최소치가 된다.At this time, when the resonance frequency is reached, the moving displacement of the heavy weight is maximum, and the back emf. Applied to the vibration coil 10 is also maximum, and the current applied to the vibration coil 10 becomes the minimum value.
따라서, 도 3에 도시된 바와 같은 시스템을 이용하여 다기능 액츄에이터(MFA18SA;3A)에 교류전원(2)을 공급하고, 상기 교류전원에 전류계(5)를 직렬로 연결한 후, 주파수를 변화(sweep)시키면서 상기 전류계(5)에서 상기 다기능 액츄에이터(actuator;3A)의 진동용 코일(vibration coil)에 인가되는 전류를 피드백(feedback) 받아 체크(check)를 하면 최소치의 전류가 흐르는 주파수가 공진점이 된다.또한 도 4에 도시된 바와 같은 시스템을 이용하여 다기능 액츄에이터(MFA18SA;3A)에 교류전원(2)을 공급하고, 상기 교류전원에 전압계(6)를 병렬로 연결한 후, 주파수를 변화(sweep)시키면서 상기 전압계(6)에서 상기 다기능 액츄에이터(actuator;3A)의 진동용 코일(vibration coil)에 인가되는 전압을 피드백(feedback) 받아 주파수의 공진점을 찾을 수 있게 된다.Accordingly, the AC power supply 2 is supplied to the multifunction actuator MFA18SA 3A using the system as shown in FIG. 3, the ammeter 5 is connected to the AC power supply in series, and the frequency is changed. When the current is fed back from the ammeter 5 to the vibration coil of the multifunctional actuator 3A and checked, the frequency at which the minimum current flows becomes a resonance point. In addition, the AC power supply 2 is supplied to the multifunction actuator MFA18SA 3A using the system as shown in FIG. 4, the voltmeter 6 is connected in parallel to the AC power supply, and the frequency is changed. While receiving the voltage from the voltmeter 6 to the vibration coil of the multifunction actuator 3A, the resonance point of the frequency can be found.
결국, 이와 같은 기술은 생산공정에서도 전류계 또는 전압계만 있으면 쉽게 전류값 또는 전압값을 체크할 수 있고, 그에 따라 공진주파수의 검출이 가능하게 된다. 또한, 상기 다기능 액츄에이터를 채용하는 세트(set)에 있어서도 간단한 피드백(feedback) 회로만 추가된다면 공진주파수의 체크(check)가 용이하게 이루어질 수 있게 된다.As a result, such a technique can easily check the current value or the voltage value only in the production process with an ammeter or a voltmeter, thereby detecting the resonant frequency. In addition, even in a set employing the multifunctional actuator, it is possible to easily check the resonant frequency if only a simple feedback circuit is added.
이상의 설명에서 본 발명은 특정의 실시예와 관련하여 도시 및 설명하였지만, 특허청구범위에 의해 나타난 발명의 사상 및 영역으로부터 벗어나지 않는 한도 내에서 다양한 개조 및 변화가 가능하다는 것을 당 업계에서 통상의 지식을 가진 자라면 누구나 쉽게 알 수 있을 것이다.While the invention has been shown and described in connection with specific embodiments thereof, it is well known in the art that various modifications and changes can be made without departing from the spirit and scope of the invention as indicated by the claims. Anyone who owns it can easily find out.
이상에서 설명한 바와 같은 본 발명의 다기능 액츄에이터용 공진주파수 검출시스템은 가속도값을 측정하여 최대값을 확인하는 방법을 사용하지 않고 전류값이나 전압값과 같은 전기적 신호를 체크함으로써 빠르고 간단하게 공진점을 검출할 수 있게 되는 효과가 있다.As described above, the resonant frequency detection system for a multifunctional actuator of the present invention can quickly and simply detect a resonance point by checking an electrical signal such as a current value or a voltage value without using a method of measuring an acceleration value and checking a maximum value. There is an effect that becomes possible.
Claims (7)
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100627975B1 (en) | 2004-11-19 | 2006-09-26 | 학교법인 성균관대학 | Resonant Frequency Detection System of Magnetic Actuator and Its Method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100627975B1 (en) | 2004-11-19 | 2006-09-26 | 학교법인 성균관대학 | Resonant Frequency Detection System of Magnetic Actuator and Its Method |
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