CAJ | 학술논문

船载卫星天线易受干扰而导致跟踪精度和通信质量下降.为改善天线系统的性能,实现了基于DSP的天线伺服控制器,在设计的天线伺服系统中应用基于指数趋近率的离散滑模变结构控制算法,并且进行了设计分析和实验仿真.实验结果表明,基于此算法,较容易设计满足系统稳定性的离散控制器.与传统的PID算法相比,该算法具有较好的实时适应性,伺服系统对连续或突加干扰的敏感度大大下降,鲁棒性明显增强.
선재위성천선역수간우이도치근종정도화통신질량하강.위개선천선계통적성능,실현료기우DSP적천선사복공제기,재설계적천선사복계통중응용기우지수추근솔적리산활모변결구공제산법,병차진행료설계분석화실험방진.실험결과표명,기우차산법,교용역설계만족계통은정성적리산공제기.여전통적PID산법상비,해산법구유교호적실시괄응성,사복계통대련속혹돌가간우적민감도대대하강,로봉성명현증강.
Unsteady performance of satellite communication station on board tend to reduce the tracking precision and communication quality of the satellite communication antenna. To improve the performance of the system, an antenna servo controller based on DSP is developed. In the servo system, a new algorithm based on the exponential trending rule discrete sliding mode variable structure algorithm is used and theoretical analysis and experimental simulation are done. The result of experiment shows that a discrete controller and its control algorithm that satisfies the stability can be easily derived and developed. Compared with the traditional PID law, the new algorithm has much better performance on real-time adjustability. The sensitivity of the servo system to the continuous or unexpected disturbing can be greatly reduced and robustness is obviously strengthened.