由于互聯(lián)網(wǎng)傳輸時(shí)延的存在, 遠(yuǎn)程控制系統(tǒng)的穩(wěn)定性很難保證,互聯(lián)網(wǎng)時(shí)延的精確預(yù)測(cè)在改善遠(yuǎn)程控制系統(tǒng)的動(dòng)態(tài)性能方面扮演著重要的角色。從網(wǎng)絡(luò)通信的原理出發(fā),分析了互聯(lián)網(wǎng)傳輸時(shí)延的構(gòu)成以及其不確定性特征后，提出了采用隨機(jī)過程AR 模型預(yù)測(cè)不確定性的互聯(lián)網(wǎng)傳輸時(shí)延的方法。最后通過預(yù)測(cè)時(shí)延仿真實(shí)驗(yàn)表明該方法的有效性。
關(guān)鍵詞：互聯(lián)網(wǎng)；時(shí)延；AR；控制系統(tǒng)
Abstract: Stability is hard to ensure due to Internet transmission time-delay in remote control systems over the Internet. The accurate prediction of the time-delay plays a key role in improving dynamic performances for remote control systems. After analyzing Internet communication features, the Autoregressive (AR) model is adopted to predict the uncertain Internet time-delay. The simulation results for time-delay prediction illustrate that the AR model provides a promising way to predict the Internet time-delay.
Key words: Internet; time-delay; AR, control system