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

NSF提案0820088/0819865题目：合作研究：动态网络系统软件设计的基于被动性的体系结构PI：Xenofon Koutsoukos（0820088），Panos Antsaklis（0819865）共同PI：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，由网络控制系统监控和控制。在CPS中，整个系统的动力学出现在物理动力学，计算动力学和通信网络之间的相互作用。该项目旨在解决构建CPS的基本问题所造成的网络不确定性，如时变延迟，抖动，数据速率限制，数据包丢失和其他，通过利用被动系统的固有安全性。该项目将开发（1）网络控制系统的基于无源性设计的理论基础，提供一种有效的方法将多个无源系统互连在一起，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，以及（2）模型-用于开发和分析软件的基于设计的过程，被动原则。该研究计划包括一个软件工具链的无源性为基础的设计，实现的无源性为基础的架构在分布式硬件平台上，和实验研究，以证明该方法。该项目作为一个很好的例子，丰富的社会背景和广泛的跨学科的互动，未来的计算机科学家和工程师将面临的CPS技术变得越来越普遍。

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.