| 1. | A modeling method for multi - packet transmission networked control systems ( ncss ) with short delay is presented
摘要提出一种短时延多包传输网络控制系统的建模方法。 |
| 2. | A new method is proposed to obtain the maximum allowable delay bound ( madb ) for networked control systems ( ncss )
摘要提出了一种获取网络化控制系统最大允许延迟时间的新方法。 |
| 3. | Otherwise , re - designing of control algorithms and re - constructing of software and hardware architecture are also required for the implementation of parallelism over ncss
此外， ncss的并行还带来了控制算法的并行化，软件硬件的重构等问题。 |
| 4. | The two types of ncss parallelizing method could improve resource utilization , so that sampling rates could be increased and control performance could also be improved
这两类系统的并行化可以有效地利用系统资源，提高控制回路的采样速率，从而提高控制精度。 |
| 5. | Recently , the development of ncss ( networked control systems ) provides a solution for applying advanced control freely by the way of parallel computation
并行计算由于可以利用并行计算机或分布式计算机系统提供单个处理器所不具备的计算能力，因而可以为实施网络化的先进控制提供有力的支持。 |
| 6. | This paper systematically analyses the negative influence of delays in ncss ( networked control systems ) on system stability and other performances , and gives some methods to compensate for these delays
摘要对于有关网络控制系统中存在的延迟对系统的稳定性及其它性能的消极影响及补偿方法，做了较系统的分析。 |
| 7. | So the basic concepts of function block are introduced here and two types of fb - based parallelism , pipeline - parallelism over single loop ncss and parallelizing of control algorithms within fb - based ncss , are also forwarded
本文介绍了功能块的基本概念，在此基础上给出了两类ncss并行化方法，即单回路ncss的流水线并行与基于功能块的ncss中控制算法的并行。 |
| 8. | For these problems , this dissertation details the analysis of network load in paralleled ncss , with an example of a can bus networked control system . the analysis of data transmission delays between different network nodes is also detailed
针对其中时延增大的问题，本文从通讯的角度出发，以can总线网络控制系统为例，阐述了实行并行控制后，总线网络的负荷状况，并且详细分析了数据在各个网络节点传输时的时延状况。 |
| 9. | Though the paralleled ncss sound better , the implementation of parallelism over ncss is not so easy due to the speciality of ncss . for instance , communication data must transmit via networks in ncss , which leads to increment of transmission delays due to parallelism . and the increased delays may bring to degradation of system performance
Ncss的并行化可以带来运算效率的提高，优化系统资源利用率，然而由于ncss本身的一些特性(如控制系统的数据必须要通过网络来传输) ，给ncss的并行化带来了一些困难，如并行后可能导致传输时延的增加，而这又会反过来影响系统性能的下降。 |
| 10. | Based on these analyses , a qos management method for paralleled ncss is put forward to figure out the increment of delays . and a qos management algorithm is also designed to provide a feedback way for resource scheduling , which could make a tradeoff between the degradation of network qos and the improvement of control performance
在此基础上，针对总线网络负荷增大的问题，结合网络控制系统的特点，提出对实行并行后的网络控制系统进行qos管理的思想，并设计了相应的qos管理策略，以求提供一种反馈式闭环资源调度策略，来协调因并行而增大的时延与系统性能提高的矛盾。 |
