With the sharp increase of China＇s in-orbit spacecraft and the constraint TT＆C resources, a mathematical model for optimal TT＆C resource allocation is proposed, and the TT＆C facility remote monitoring function is ...With the sharp increase of China＇s in-orbit spacecraft and the constraint TT＆C resources, a mathematical model for optimal TT＆C resource allocation is proposed, and the TT＆C facility remote monitoring function is designed to achieve the multitask operation pattern under the unified management of the network management center. With this pattern, the TT＆C network management and the spacecraft management are separated, which is quite different from the previous pattern. Further, a novel spacecraft TT＆C technique based on spacecraft control language is developed, and the telecommanding pattern is designed to address the spacecraft operation problems. The engineering application shows that this pattern fundamentally improves the TT＆C network capability, increases the resource efficiency, and satisfies the efficient, accurate, and flexible operation of spacecraft.展开更多
本文对基于IPC(Industrial Personal Computer)的配合饲料控制系统的工作原理、硬件结构和软件编程进行了阐述。该系统采用了动态连接库技术和多任务处理技术实现了对配合饲料过程的控制和管理。本人对动态连接库技术已在贵刊发表过,在...本文对基于IPC(Industrial Personal Computer)的配合饲料控制系统的工作原理、硬件结构和软件编程进行了阐述。该系统采用了动态连接库技术和多任务处理技术实现了对配合饲料过程的控制和管理。本人对动态连接库技术已在贵刊发表过,在此主要讲述多任务的实现方法,并给出实现这一方法的软件流程图,这一思想也适用于其它多任务系统的控制,具有较高的参考价值。展开更多
研究了多通道分布式主动噪声控制(Distributed Active Noise Control,ANC)系统的空间平滑问题.传统的分布式ANC算法通过本地控制器之间的通信,可以大大提高系统稳定性.但由于每组控制器和误差麦克风分布位置不同,引入的估计偏差影响系...研究了多通道分布式主动噪声控制(Distributed Active Noise Control,ANC)系统的空间平滑问题.传统的分布式ANC算法通过本地控制器之间的通信,可以大大提高系统稳定性.但由于每组控制器和误差麦克风分布位置不同,引入的估计偏差影响系统整体降噪性能.因此,旨在开发一种新型扩散滤波最小均方算法(Diffusion Filtered-x Least Mean Squares,Diff-FxLMS),该算法平衡了空间平滑度和信息交换强度之间的矛盾,从而减少估计偏差.通过对Diff-FxLMS算法性能进行的理论分析,揭示了扩散控制机制,为ANC算法设计提供了理论依据,并在此基础上发展出一种新型的可变平滑度的Diff-FxLMS(Varible Spatial Regularized Diff-FxLMS,VSR-Diff-FxLMS)算法.仿真结果验证了新算法的性能及理论分析的可靠性.展开更多
基金supported by the China Postdotoral Science Foundation (20060401004).
文摘With the sharp increase of China＇s in-orbit spacecraft and the constraint TT＆C resources, a mathematical model for optimal TT＆C resource allocation is proposed, and the TT＆C facility remote monitoring function is designed to achieve the multitask operation pattern under the unified management of the network management center. With this pattern, the TT＆C network management and the spacecraft management are separated, which is quite different from the previous pattern. Further, a novel spacecraft TT＆C technique based on spacecraft control language is developed, and the telecommanding pattern is designed to address the spacecraft operation problems. The engineering application shows that this pattern fundamentally improves the TT＆C network capability, increases the resource efficiency, and satisfies the efficient, accurate, and flexible operation of spacecraft.
文摘本文对基于IPC(Industrial Personal Computer)的配合饲料控制系统的工作原理、硬件结构和软件编程进行了阐述。该系统采用了动态连接库技术和多任务处理技术实现了对配合饲料过程的控制和管理。本人对动态连接库技术已在贵刊发表过,在此主要讲述多任务的实现方法,并给出实现这一方法的软件流程图,这一思想也适用于其它多任务系统的控制,具有较高的参考价值。
文摘研究了多通道分布式主动噪声控制(Distributed Active Noise Control,ANC)系统的空间平滑问题.传统的分布式ANC算法通过本地控制器之间的通信,可以大大提高系统稳定性.但由于每组控制器和误差麦克风分布位置不同,引入的估计偏差影响系统整体降噪性能.因此,旨在开发一种新型扩散滤波最小均方算法(Diffusion Filtered-x Least Mean Squares,Diff-FxLMS),该算法平衡了空间平滑度和信息交换强度之间的矛盾,从而减少估计偏差.通过对Diff-FxLMS算法性能进行的理论分析,揭示了扩散控制机制,为ANC算法设计提供了理论依据,并在此基础上发展出一种新型的可变平滑度的Diff-FxLMS(Varible Spatial Regularized Diff-FxLMS,VSR-Diff-FxLMS)算法.仿真结果验证了新算法的性能及理论分析的可靠性.
