• 제목/요약/키워드: Current Precision

검색결과 1,152건 처리시간 0.032초

High Precision Electromagnetic Momentum Positioning with Current Loop

  • ZHANG, Chao;ZHAO, Yufei;WU, Hong
    • Journal of Magnetics
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    • 제22권1호
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    • pp.150-154
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    • 2017

  • A novel high precision spatial positioning method utilizing the electromagnetic momentum, i.e., Electromagnetic Momentum Positioning (EMP), is proposed in this paper. By measuring the momentum of the electromagnetic field around the small current loop, the relative position between the sensor and the current loop is calculated. This method is particularly suitable for the application of close-range and high-precision positioning, e.g., data gloves and medical devices in personal healthcare, etc. The simulation results show that EMP method can give a high accuracy with the positioning error less than 1 mm, which is better than the traditional magnetic positioning devices with the error greater than 1 cm. This method lays the foundation for the application of data gloves to meet the accurate positioning requirement, such as the high precision interaction in Virtual Reality (VR), Augmented Reality (AR) and personal wearable devices network.

  • https://doi.org/10.4283/JMAG.2017.22.1.150 인용 PDF KSCI

주축전류신호를 이용한 절삭력의 추정과 이송속도 적응제어 (Cutting Force Estimation and Feedrate Adaptive Control Using Spindle Motor Current)

  • 김기대;이성일;권원태;주종남
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 1996년도 추계학술대회 논문집
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    • pp.150-156
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    • 1996

  • Static variations of cutting forces are estimated using spindle motor current. Static sensitivity of spindle motor current is higher than feed motor current. The linear relationship between the cutting force and RMS value of the spindle motor current is obtained. Using cutting force estimation, tool overload in milling process can be well detected, and cutting force is regulated at a constant level by feedrate adaptive control.

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