Collaborative Research: Passivity-based Architecture for Software Design of Dynamic Networked Systems

NSF提案0820088/0819865标题：合作研究：基于被动的动态网络系统软件设计架构，项目负责人：Xenofon Koutsoukos (0820088), Panos Antsaklis(0819865)，项目负责人：Janos Sztipanovits，现实生活中的网络物理系统（cps），如自动驾驶汽车和楼宇自动化系统，由网络控制系统监测和控制。在cps中，整个系统动力学来自物理动力学、计算动力学和通信网络之间的相互作用。本项目旨在利用无源系统固有的安全性，解决网络不确定性导致的cps构建中的基本问题，如时变延迟、抖动、数据速率限制、丢包等。该项目将发展(1)基于被动的网络控制系统设计的理论基础，提供一种有效的方法将多个被动系统互连在一起，并在存在时变延迟和数据丢失的情况下保持稳定性和性能；(2)基于模型的设计过程，用于开发和分析软件，利用源于底层被动原则的设计视图的组合性和正交性。该研究计划包括基于被动式设计的软件工具链、基于被动式架构在分布式硬件平台上的实现，以及验证该方法的实验研究。随着CPS技术的日益普及，未来的计算机科学家和工程师将面临丰富的社会背景和广泛的跨学科互动，该项目是一个很好的例子。

NSF Proposals 0820088/0819865Title: Collaborative Research: Passivity-based Architecture for Software Design of Dynamic Networked SystemsPIs: Xenofon Koutsoukos (0820088), Panos Antsaklis (0819865)Co-PI: Janos Sztipanovits, Real-life Cyber Physical Systems (CPSs), such as autonomous vehicles and building automation systems, are monitored and controlled by networked control systems. In CPSs, the overall system dynamics emerges from the interaction among physical dynamics, computational dynamics, and communication networks. This project aims at addressing the fundamental problems in constructing CPSs caused by network uncertainties, such as time varying delay, jitter, data rate limitations, packet loss and others, by exploiting the inherent safety of passive systems. The project will develop (1) the theoretical foundations for passivity-based design of networked control systems that provide an effective way to interconnect multiple passive systems together and preserve stability and performance in the presence of time varying delays and data dropouts and (2) model-based design processes for developing and analyzing software utilizing the compositionality and the orthogonality across design views stemming from the underlying passivity principles. The research plan includes a software tool-chain for passivity-based design, an implementation of the passivity-based architecture on a distributed hardware platform, and experimental studies for demonstrating the approach. The project serves as an excellent example for the rich societal context and extensive interdisciplinary interactions that future computer scientists and engineers will face as CPS technology is becoming increasingly pervasive.