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首页> 外文期刊>IEEE transactions on industrial informatics >Comparative Analysis of a Selected DCT-Based Compression Scheme for Haptic Data Transmission
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Comparative Analysis of a Selected DCT-Based Compression Scheme for Haptic Data Transmission

机译：用于触觉数据传输的基于DCT的选定压缩方案的比较分析

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摘要

In this study, a novel compression and decompression algorithm, namely the selected discrete cosine transform (DCT), is presented for implementation in networked motion control systems. The proposed method relies on the utilization of a selection algorithm based on bubble sorting to choose the highest power coefficients of the signal obtained by using DCT. In order to better illustrate the effectiveness of the proposed method, comparisons are made with the methods existing in the literature. To this aim, the basics of the compression schemes used in the comparison, namely, the DCT, discrete Fourier transform, and wavelet packet transform, are also briefly discussed followed by the derivation of the proposed method. The algorithmic bases of all four schemes are given to provide further reference for practical applications. The proposed method is tested on an experimental platform consisting of a single-single-degree-of-freedom master and slave systems, and the results are comparatively analyzed based on relevant performance evaluation metrics. The obtained results demonstrate the improvement achieved by the proposed compression scheme over the existing compression methods used in network-based motion control applications, hence proving the feasibility of the approach in teleoperation systems.
机译：在这项研究中，提出了一种新颖的压缩和解压缩算法，即选定的离散余弦变换（DCT），以在网络运动控制系统中实现。所提出的方法依靠利用基于气泡排序的选择算法来选择使用DCT获得的信号的最高功率系数。为了更好地说明所提方法的有效性，与文献中已有的方法进行了比较。为此，还简要讨论了比较中使用的压缩方案的基础，即DCT，离散傅里叶变换和小波包变换，然后推导了所提出的方法。给出了所有四种方案的算法基础，以为实际应用提供进一步的参考。该方法在由单单自由度主从系统组成的实验平台上进行了测试，并基于相关的性能评估指标对结果进行了比较分析。获得的结果证明了所提出的压缩方案相对于基于网络的运动控制应用中使用的现有压缩方法所实现的改进，从而证明了该方法在远程操作系统中的可行性。

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