• Proceedings of the KIPE Conference
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• 2017.07a
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• pp.409-410
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• 2017

마이크로 스텝제어를 적용한 스텝 모터는 가격대비 성능이 다른 전동기에 비하여 우수하기 때문에 다양한 산업분야에 광범위하게 사용된다. 큰 감속비를 갖는 응용분야에서는 1000 [rpm]이상의 고속운전이 필요한 경우가 빈번하게 발생하며 이 경우 마이크로 스텝제어가 현실적으로 불가능하다. 본 논문에서는 고속운전이 가능한 고정밀 위치제어용 스텝 모터 제어 알고리즘에 대한 연구를 진행한다. S커브 형태의 위치 프로파일을 적용한 고성능 위치 제어를 위해 마이크로 스텝제어를 적용하여 위치제어를 수행하며 고속 이동시에는 기본 스텝제어로 제어방식을 절환하는 하이브리드 운전 기법을 제안한다.

• Proceedings of the KIEE Conference
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• 2001.07b
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• pp.1194-1196
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• 2001

본 논문은 스테핑 모터의 구동 중에서 2상 여자모드와 마이크로 스테핑의 주기성이 동일함에 기초하여 32 스텝의 정현파 마이크의 스테핑을 실현하고 그 특성을 연구한 내용이다. 마이크로 스테핑은 스테핑 모터의 스텝각을 크게 세분화하여 구동함으로써 진동과 소음이 적고 부드럽게 구동하고자 하는 방법인데, 본 논문의 정현파 마이크로 스테핑은 종래의 마이크로 스테핑에 비하여 더욱 우수한 저진동 저소음 특성을 나타낸다.

• The Transactions of the Korean Institute of Power Electronics
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• v.9 no.1
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• pp.88-95
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• 2004

Micro stepping method is adopted in order to eliminate effectively the resonant phenomena and to increase the positional resolution. Exist micro-step method by using Sinusoidal waveform, drive circuit is complex by using micro controller and ROM, it have fault on cost Increase. This paper proposed trapezoidal current wave form for simple control circuit and micro stepping method by using a low cost controller. This paper proposed method verify by using CPLD(EPM9320RC208-15) of low cost. This paper make experiment that comparison of exist method and proposed method. This paper obstruct a escape of motor by using high speed detect.

• Journal of Power System Engineering
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• v.13 no.4
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• pp.62-67
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• 2009

In this paper we designed a prototype hybrid type linear pulse motor (HLPM) with single side stator structure for low cost. The measurement system which can get the motor characteristics of the HLPM was suggested. The static and dynamic characteristics of the thrust force are measured analyzed. And the microstep drive method is adopted and tested to the drive of prototype HLPM. The thrust waveform is measured respectively to know the differences of the thrust waveform between the microstep drive method and rectangular wave. From the experimental results, it can be confirmed that the repetitive ripple of the thrust force of the prototype HLPM is reduced by taking the microstep drive method.

• The Transactions of the Korean Institute of Power Electronics
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• v.11 no.5
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• pp.447-453
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• 2006

This paper proposes that 5 phase step motor drive system has high performance utilizing a micro step control with a current controller. Also this paper proposes an analog current controller to minimize size of the 5 phase step motor drive system. It has better advantages of cost and noise and heating than commercial products. As a result, Applying this system to position control robot the validity of suggested analog current controller and driver system is verified.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.24 no.1
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• pp.145-151
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• 2010

This paper presents the design and implementation of direction controllers by microstep control and dc servo control for material transport system. The perfomances of direction control systems are compared in position responses and motor power consumptions between microstep control of a step motor and dc servo control.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.13 no.10
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• pp.2147-2153
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• 2009

A Hybrid type Linear Pulse Motor(LPM) for low cost is designed as single side stator structure. The static and dynamic characteristics measurement systems are designed. Experimental measurement systems, which measure the static and dynamic characteristic of the LPM, are uggested for the prototype LPM. It becomes known the values of the thrust forces. Finally the microstep drive method is adopted to the drive of prototype LPM. The waveform difference is measured between the microstep method and rectangular wave. From the experimental results, it can be confirmed that the repetitive ripple of the thrust force of the prototype LPM are reduced by taking the microstep drive method.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.6 no.2
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• pp.165-171
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• 2005

The ultrasonic piezo motor is a new type motor that has an excellent performance and many useful features that electromagnetic motors do not have. But, it suffers from severe system non-linearities and parameter variations especially during speed control. Therefore, it is difficult to accomplish satisfactory control performance by using the conventional PID controller. In this paper, to achieve the precise control for linear type ultrasonic motor was analyzed as a function of response time and change with a driving time. Also, we propose controller that combines STEP controller and PD controller that have error of ${\mu}m$ about liner type ultrasonic motor.

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 2002.12a
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• pp.102-105
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• 2002

다기능 휠체어 시스템의 제어부인 80C196KC를 사용했으나, fuzzy 알고리즘을 적용하는데 있어서 여러 가지 문제점(속도, 연산, 외부장치 등) 때문에 구현1차는데 상당한 어려움이 있었다. 이를 해결하기 위해 20MIPS의 속도인 TMS320F240의 프로세서를 사용하였으며 이로 인해 발생하는 문제점을 거의 해소시켰고, 퍼지 알고리즘을 효율적으로 적용할 수 있었다. 본 시스템의 구성은 주제어기로 퍼지 제어 알고리즘을 사용하여 조이스틱을 제어시켰고, 2개 encoder를 입력을 받아 휠체어 회전수를 이용하여 제어시켰다. 휠체어 모터로는 BLDC(Brushless DC) 모터를 사용했으면, BLDC전용 드라이브단을 이용하여 모터를 구현시켰다. 그리고 3개의 초음파 센서를 부착하여 장애물 회피를 시도하였다. 초음파센서의 효율적인 사용을 위해 스텝 모터(Stepping Motor)와 마이크로 컨트롤러로 PIC을 사용하였다. 본 논문의 실험 결과에서는 이전의 제어기(80C196KC)보다 현저히 성능 면에서 향상되었고, 부수적인 외부장치 처리면에서도 상당한 차이를 볼 수 있었다

• Proceedings of the IEEK Conference
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• 2001.06e
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• pp.135-138
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• 2001

This paper presents micro step driving method using VHDL(Very high speed integrated circuit Hardware Description Language) which can configure CPLD(Complex Programmable Logic Device). Using VHDL which can do abstractive programming is similar to high level language. The whole block divided into five parts with freq. divide part, saw-tooth wave generation part, sine-cosine wave generation part, comparative part, out part. In the result of this study, peripheral circuits are to be simple and using LPM(Library of Parameterized Modules) is more easily to configure circuit. It is easy to verify and implement by using VHDL. To subdivide one natural step, we confirm that using micro step driver is expected that the rotor motion is stepless very smooth.