An overview of the CHESS Center
Berkeley
EECS
Annual
Research
Symposium
http://chess.eecs.berkeley.edu/
Cyber-Physical Systems
Organization
Faculty
Edward A. Lee, EECS
Alberto Sangiovanni-Vincentelli, EECS
Shankar Sastry, EECS
Claire J. Tomlin, EECS
Karl Hedrick, ME
Sanjit Seshia, EECS
Masayoshi Tomizuka, ME
Hybrid system model of
Newton’s Cradle, built using
HyVisual.
Mission
The goal of the Center is to provide an environment
for graduate research on the design issues necessary
for supporting next-generation embedded software
systems. The research focus is on developing modelbased and tool-supported design methodologies for
real-time fault-tolerant software on heterogeneous
distributed platforms.
Staff
Christopher Brooks, EECS
Charlotte M. Jones, EECS
Yulia Golubovskaya, EECS
Mary Stewart, EECS
Stavros Tripakis, EECS
Affiliated faculty
Aviral Shrivastava, Arizona State
Jonathan Sprinkle, University of Arizona, ECE
The Problem: intensive use of
embedded software in complex
physical systems, such as cars.
"A cyber-physical system (CPS) integrates
computing and communication capabilities with
monitoring and / or control of entities in the
physical world dependably, safely, securely,
efficiently and in real-time." - S. Shankar Sastry
The research laboratory:
software frameworks and
test systems such as the
Toyota test cell for engine
control technology.
CHESS provides industry with innovative software
methods, design methodology and tools while
helping industry solve real-world problems. CHESS
is defining new areas of curricula in engineering and
computer science which will result in solving
societal issues surrounding aerospace, automotive,
consumer electronics and medical devices.
CHESS Software
Examples of CHESS software include:
• HyVisual, a block-diagram editor
and simulator for continuous-time
and hybrid systems (shown at the
left)
The Problem: High
speed printing
presses require
millisecond timing
over 100 meters
• Metropolis, a design environment
for heterogeneous systems
• MetroII, enhancements to
Metropolis: heterogeneous IP
import, orthogonalization of
performance from behavior
• Precision Timed (PRET)
Architecture Simulator.
The Problem: intensive use of
embedded software in complex
physical systems, such as aircraft.
• Pt1588, an open source
implementation of IEEE1588-2008.
• PTARM, a precision timed soft core
The research laboratory:
software frameworks and
test systems such as the
STARMAC Quadrotor
Aircraft (Prof. Tomlin)
Software engineering
today is based on
principles that abstract
away key semantic
properties embedded
systems, such as time.
The result is ad-hoc
architectures and
brittle systems.
Embedded software
architecture tomorrow will
be built on sound
principles that reflect the
interaction of the software
with the physical world.
February 14, 2013
Research
The research laboratory: PTIDES:
Programming Temporally Integrated
Distributed Embedded Systems
The PTIDES project focuses on modelbased design principles for eventtriggered real-time distributed systems.
• Ptolemy II, a software laboratory for
concurrent models of computation
• VisualSense, a visual editor and
simulator for wireless sensor
network systems.
• Viptos, a block-diagram editor and
simulator for TinyOS Systems.
• Design of cyber-physical systems
• Hybrid systems theory and practice
The Solution: PTIDES is used to
• Programming models for embedded control systems
generate code for different
microcontrollers.
• Semantics of modeling languages and methods
• Applications in automotive, avionics, sensor networks, and biology
• Embedded virtual machines for portable, mobile real-time code
• Experimental software platforms (Ptolemy, Metropolis, Giotto, etc.)
• Design transformation technology (component specialization, code gen.)
• Verification of temporal and safety properties of software
• Visual syntaxes for system design
Center for Hybrid and Embedded Software Systems
This work was supported in part by the
Center for Hybrid and Embedded
Software Systems (CHESS) at UC
Berkeley, which receives support from the
National Science Foundation (NSF
awards #0720882 (CSR-EHS: PRET),
#0931843 (CPS: Large: ActionWebs), and
#1035672 (CPS: Medium: Ptides)), the
Naval Research Laboratory (NRL
#NOOI73-12-1-G015), and the following
companies: Bosch, National Instruments,
and Toyota.