Journal of Advanced Marine Engineering and Technology

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
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ARMA-based data prediction method and its application to teleoperation systems

ARMA기반의 데이터 예측기법 및 원격조작시스템에서의 응용

  • Kim, Heon-Hui (Division of Marine Engineering, Mokpo National Maritime University)
  • Received : 2016.09.29
  • Accepted : 2017.01.18
  • Published : 2017.01.31
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Abstract

This paper presents a data prediction method and its application to haptic-based teleoperation systems. In general, time delays inevitably occur during data transmission in a network environment, which degrades the overall performance of haptic-based teleoperation systems. To address this situation, this paper proposes an autoregressive moving average (ARMA) model-based data prediction algorithm for estimating model parameters and predicting future data recursively in real time. The proposed method was applied to haptic data captured every 5 ms while bilateral haptic interaction was carried out by two users with an object in a virtual space. The results showed that the prediction performance of the proposed method had an error of less than 1 ms when predicting position-level data 100 ms ahead.

본 논문은 시간지연이 있는 데이터의 예측기법과 햅틱기반의 원격조작시스템에서의 응용방법을 다룬다. 일반적으로 네트워크 환경은 데이터 전송에 따른 시간지연이 필수적으로 동반되며, 햅틱기반의 원격조작시스템이 이러한 네트워크 환경에 구현되는 경우 시간지연으로 인해 전체 시스템의 성능저하를 피할 수 없다. 이러한 상황을 고려하여, 본 논문은 ARMA모델을 기반으로 모델파라미터의 학습방법과 실시간 예측을 위한 재귀적 알고리즘을 제안한다. 제안된 방법은 가상공간에 놓인 물체에 대하여 양방향 햅틱 상호작용의 상황에서 5ms의 샘플링 주기로 획득한 햅틱데이터에 적용되며, 그 결과로서 100ms 이후의 값을 예측함에 있어 위치수준 오차 1mm이내의 예측성능을 보였다.

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References

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