KR960012680A - Ultrasonic Motor Drive - Google Patents

Ultrasonic Motor Drive Download PDF

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Publication number
KR960012680A
KR960012680A KR1019940022377A KR19940022377A KR960012680A KR 960012680 A KR960012680 A KR 960012680A KR 1019940022377 A KR1019940022377 A KR 1019940022377A KR 19940022377 A KR19940022377 A KR 19940022377A KR 960012680 A KR960012680 A KR 960012680A
Authority
KR
South Korea
Prior art keywords
frequency
ultrasonic motor
motor drive
counter
signal
Prior art date
Application number
KR1019940022377A
Other languages
Korean (ko)
Inventor
김유만
Original Assignee
김광호
삼성전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019940022377A priority Critical patent/KR960012680A/en
Publication of KR960012680A publication Critical patent/KR960012680A/en

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  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)

Abstract

본 발명은 초음파모터 구동장치에 관한 것으로, 특히 초음파모터에 걸리는 부하변동에 상관없이 일정한 회전수를 얻을 수 있는 초음파모터 구동장치에 관한 것이다. 전압제어발진기(VCO)를 이용하여 모터를 구동시키는 종래의 모터구동장치의 구동신호를 제어하는 것이 힘들었지만, 본 발명은 항상 일정 주파수를 출력하는 수정진동자와 이를 분주하는 카운터에 의해 초음파모터의 구동주파수를 제어함으로써, 모터에 걸리는 부하에 관계없이 초음파모터를 구도하여 전압제어발진기(VCO)를 사용하였을 때보다 구동 주파수의 안정성이 높고 디지탈제어가 가능한 잇점을 제공한다.The present invention relates to an ultrasonic motor driving apparatus, and more particularly, to an ultrasonic motor driving apparatus capable of obtaining a constant rotational speed irrespective of load fluctuations applied to an ultrasonic motor. Although it is difficult to control the drive signal of the conventional motor drive device which drives the motor by using the voltage controlled oscillator (VCO), the present invention drives the ultrasonic motor by a crystal oscillator which always outputs a constant frequency and a counter which divides it. By controlling the frequency, the stability of the driving frequency is higher and the digital control is possible than when using a voltage controlled oscillator (VCO) by constructing an ultrasonic motor regardless of the load on the motor.

Description

초음파모터 구동장치Ultrasonic Motor Drive

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제2도는 본 발명의 바람직한 일 실시예에 따른 초음파모터의 구동장치를 나타내는 구성도.Figure 2 is a block diagram showing a driving device of the ultrasonic motor according to an embodiment of the present invention.

Claims (4)

주파수를 인가하여 모터를 구동시키는 장치에 있어서, 항상 일정한 주파수를 발생시키는 주파수발생기와 제어수단의 제어신호에 따라 상기 주파수발생기로부터 출력되는 주파수펄스를 계수하는 카운터와 상기 카운터로부터의 신호를 상기 모터의 구동에 적합한 신호로 분주하는 분주기를 포함하는 주파수발진수단; 상기 모터로부터 검출된 모터구동신호와 초기 설정한 모터구동신호를 비교하여 오차를 보정하는 신호를 상기 주파수발진수단으로 출력하는 제어수단을 포함하는 초음파 모터구동장치.An apparatus for driving a motor by applying a frequency, comprising: a counter for counting frequency pulses output from the frequency generator according to control signals of a frequency generator and a control means which always generate a constant frequency, and a signal from the counter Frequency oscillating means including a divider for dividing into a signal suitable for driving; And a control means for comparing the motor drive signal detected from the motor with the initially set motor drive signal and outputting a signal for correcting the error to the frequency oscillating means. 제1항에 있어서, 상기 주파수발진수단은 상기 주파수발생기의 출력단과 상기카운터7의 입력단에 완충작용을 하는 버퍼를 더 포함하는 것을 특징으로 하는 초음파 모터구동장치.The ultrasonic motor drive apparatus according to claim 1, wherein the frequency oscillating means further comprises a buffer which buffers an output terminal of the frequency generator and an input terminal of the counter 7. 제1항에 있어서, 상기 카운터는 상기 제어수단의 제어신호에 따라 계수단위를 변화시키는 것을 특징으로 하는 초음파 모터구동장치.The ultrasonic motor drive apparatus according to claim 1, wherein the counter changes the counting unit according to a control signal of the control means. 제3항에 있어서, 상기 제어신호는 아래식에 의해 산출된 n값인 것을 특징으로 하는 초음파 모터구동장치.The ultrasonic motor drive apparatus according to claim 3, wherein the control signal is an n value calculated by the following equation. =2f = 2f 여기서, f0는 주파수발생기의 발진주파수이고 f는 모터구동주파수이며 n은 상기 카운터가 상기 주파수발생기로부터 인가되는 발진주파수를 계수하여 출력하기 위한 주파수 펄스수를 말한다.Here, f 0 is the oscillation frequency of the frequency generator, f is the motor driving frequency, n is the number of frequency pulses for the counter to count and output the oscillation frequency applied from the frequency generator. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940022377A 1994-09-06 1994-09-06 Ultrasonic Motor Drive KR960012680A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940022377A KR960012680A (en) 1994-09-06 1994-09-06 Ultrasonic Motor Drive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940022377A KR960012680A (en) 1994-09-06 1994-09-06 Ultrasonic Motor Drive

Publications (1)

Publication Number Publication Date
KR960012680A true KR960012680A (en) 1996-04-20

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Application Number Title Priority Date Filing Date
KR1019940022377A KR960012680A (en) 1994-09-06 1994-09-06 Ultrasonic Motor Drive

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100597730B1 (en) * 1999-03-09 2006-07-07 삼성전자주식회사 Sensorless bldc motor and pulse width controlling method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100597730B1 (en) * 1999-03-09 2006-07-07 삼성전자주식회사 Sensorless bldc motor and pulse width controlling method thereof

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