Infrastructure

Robust Feasibility for Control of Water Flow in a Reservoir-Canal System

Amin, Saurabh
Alexandre Bayen
El Ghaoui, Laurent
Sastry, Shankar
2007

A robust control problem for distant downstream control of a reservoir-canal system modeled by Saint-Venant equations is investigated. The problem is to regulate the release of water at the upstream end such that the measured water level (or stage) at the downstream end does not deviate outside of prescribed bounds under the effect of downstream perturbations. Under the assumption of small perturbations, the Saint-Venant model is linearized around a steady state flow. The resulting linear model is discretized to obtain a linear state-space model using a method of characteristics based...

Improving Disruption Management with Multimodal Collaborative Decision-Making: A Case Study of the Asiana Crash and Lessons Learned

Marzuoli, Aude
Boidot, Emmanuel
Colomar, Pablo
Guerpillon, Mathieu
Alexandre Bayen
2016

Transportation networks constitute a critical infrastructure enabling the transfers of passengers and goods, with a significant impact on the economy at different scales. Transportation modes are coupled and interdependent. The frequent occurrence of perturbations on one or several modes disrupts passengers' entire journeys, directly and through ripple effects. Collaborative decision-making has shown significant benefits at the airport level, both in the U.S. and in Europe. This paper examines how it could be extended to the multimodal network level, discusses the supporting evidence, and...

Optimizing the Diamond Lane: A More Tractable Carpool Problem and Algorithms

Wu, Cathy
Shankari, K.
Kamar, Ece
Katz, Randy
Culler, David
Alexandre Bayen
2016

Carpooling has been long deemed a promising approach to better utilizing existing transportation infrastructure. However, there are several reasons carpooling is still not the preferred mode of commute in the United States: first, complex human factors, including time constraints and not having right incentive structures, discourage the sharing of rides; second, algorithmic and technical barriers inhibit the development of online services for matching riders. In this work, we study algorithms for 3+ high-occupancy vehicle (HOV) lanes, which permit vehicles that hold three or more people....

MOBILITY21: Strategic Investments for Transportation Infrastructure & Technology

Mangharam, Rahul
Reyerson, Megan
Viscelli, Steve
Balakrishanan, Hamsa
Alexandre Bayen
2017

America's transportation infrastructure is the backbone of our economy. A strong infrastructure means a strong America - an America that competes globally, supports local and regional economic development, and creates jobs. Strategic investments in our transportation infrastructure are vital to our national security, economic growth, transportation safety and our technology leadership. This document outlines critical needs for our transportation infrastructure, identifies new technology drivers and proposes strategic investments for safe and efficient air, ground, rail and marine mobility...

Building-in-Briefcase: A Rapidly-Deployable Environmental Sensor Suite for the Smart Building

Weekly, Kevin
Jin, Ming
Zou, Han
Hsu, Christopher
Soyza, Chris
Alexandre Bayen
Spanos, Costas
2018

A building’s environment has profound influence on occupant comfort and health. Continuous monitoring of building occupancy and environment is essential to fault detection, intelligent control, and building commissioning. Though many solutions for environmental measuring based on wireless sensor networks exist, they are not easily accessible to households and building owners who may lack time or technical expertise needed to set up a system and get quick and detailed overview of environmental conditions. Building-in-Briefcase (BiB) is a portable sensor network platform that is trivially...

Preserving Privacy in Road User Charge (RUC) Architectures

Alexandre Bayen
Forscher, Teddy
Susan Shaheen
2018

One of the major concerns for the technical implementation of a RUC is the ability to collect the mileage of motorists in a way that preserves and protects individual privacy. With the widespread use of connected devices/smartphones and the growth of connected vehicles and the existence of toll tag readers, it is possible to build and deploy architectures capable of computing advanced fee structures (based upon on mileage, road type, time of day, and speed, among other features) that respect motorist privacy. A possible architecture can rely on the use of virtual trip lines (VTLs) –a...

Observer Design for Boundary Coupled PDEs: Application to Thermostatically Controlled Loads in Smart Grids

Scott Moura
Bendtsen, Jan
Ruiz, Victor
2013

This paper develops methods for state estimation of aggregated thermostatically controlled loads (TCLs) in smart grids, via partial differential equation (PDE) techniques. TCLs include on/off controlled devices, such as heat pumps, HVAC systems, and deep freezers. Control of aggregated TCLs provides a promising opportunity to mitigate the mismatch between power generation and demand, thus enhancing grid reliability and enabling renewable energy penetration. However, persistent communication between thousands of TCLs to a central server can be prohibitive. To this end, this paper focuses on...

A Second Order Cone Programming Model for PEV Fast-Charging Station Planning

Zhang, Hongcai
Scott Moura
Hu, Zechun
Qi, Wei
Song, Yonghua
2017

This paper studies siting and sizing of plug-in electric vehicle (PEV) fast-charging stations on coupled transportation and power networks. We develop a closed-form service rate model of highway PEV charging stations' service abilities, which considers heterogeneous PEV driving ranges and charging demands.We utilize a modified capacitated flow refueling location model (CFRLM) to explicitly capture time-varying PEV charging demands on the transportation network under driving range constraints. We explore extra constraints of the CFRLM to enhance model accuracy and computational efficiency....

Joint Planning of PEV Fast-Charging Network and Distributed PV Generation

Zhang, Hongcai
Scott Moura
Hu, Zechun
Qi, Wei
2017

Integration of plug-in electric vehicles (PEVs) with distributed renewable resources will decrease PEVs' well-to-wheels greenhouse gas emissions, promote renewable power adoption and defer power system investments. This paper proposes a multidisciplinary approach to jointly planning PEV fast-charging stations and distributed photovoltaic (PV) power plants on coupled transportation and power networks. First, we develop models of 1) PEV fast-charging stations; 2) highway transportation networks under PEV driving range constraints; 3) PV power plants with reactive power control. Then, we...

Joint PEV Charging Station and Distributed PV Generation Planning

Zhang, Hongcai
Scott Moura
Hu, Zechun
Qi, Wei
Song, Yonghua
2017

Integration of plug-in electric vehicles (PEVs) with distributed renewable resources will decrease PEVs' well-to-wheels greenhouse gas emissions, alleviate power congestions and defer power system investments. This paper proposes a two stage stochastic joint planning model of PEV fast-charging stations and distributed photovoltaic (PV) generation on coupled transportation and power networks, considering stochastic characteristics of base load, traffic flow and PV power. We use origin-destination (OD) traffic flow to estimate PEV charging demands and propose a second order cone programming...