Raj Rajkumar

Professor Carnegie Mellon University

  • Pittsburgh PA

Raj Rajkumar researches ways to safely bring your vehicle to life with information technology.

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Carnegie Mellon University

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Biography

Raj Rajkumar is a professor in the Department of Electrical and Computer Engineering. He is the director of Metro21, Carnegie Mellon University's campus-wide initiative on Smart Cities, and the US Department of Transportation's Mobility21 National University Transportation Center. Rajkumar is thinking of ways to safely bring your vehicle to life with information technology — giving you a car that will know and help you, inform and entertain you, and even take care of itself like a proper traveling companion. That includes connected and autonomous driving, cyber-physical systems, embedded and real-time systems and wired/wireless networking. Rajkumar is exploring the many intricate engineering domains of vehicle operation in a quest for some answers to what's possible in the cars of tomorrow.

Areas of Expertise

Wired/Wireless Networking
Cyber-Physical Systems
Autonomous Driving
Embedded and Real-Time Systems

Media Appearances

Carnegie Mellon gets $20M in federal funds to spark transportation safety initiative

Technical.ly  online

2023-05-30

Carnegie Mellon electrical and computer engineering professor Raj Rajkumar said Safety 21 would use research and development to advance tech and policy innovations.

“We seek to broaden our impact by ensuring communities have equal access to safety technologies; evaluating energy use and emissions; and supporting domestic commercialization, entrepreneurship and public policy to rally economic strength and global competitiveness,” Rajkumar said.

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Tesla closes an office as layoff hits Autopilot jobs, including hourly ones

Reuters  online

2022-06-29

"Tesla clearly is in a major cost-cutting mode," said Raj Rajkumar, professor of electrical and computer engineering at Carnegie Mellon University. "This (staff reduction) likely indicates that 2Q 2022 has been pretty rough on the company due to the shutdown in Shanghai, raw material costs and supply chain problems."

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The White House is lobbying hard for chip funding that experts say would help Pittsburgh tech firms

90.5 WESA  online

2022-04-18

“They cannot actually buy the high-performance computers that they need to basically utilize to train the artificial intelligence to make these products work. So that has clearly hampered the development side of these technologies.” Carnegie Mellon electrical and computer engineering professor Raj Rajkumar said.

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Spotlight

1 min

Secretary Buttigeg makes one of his final DOT stops at CMU's Safety 21

U.S. Secretary of Transportation Pete Buttigieg visited Carnegie Mellon University in one of his final stops as Transportation Secretary. Raj Rajkumar, director of Safety21 and George Westinghouse Professor in the Department of Electrical and Computer Engineering, with Ph.D. candidates Nishad Sahu and Gregory Su, demonstrated research on the safe navigation of autonomous driving systems in designated work zones, leveraging high-definition mapping, computer perception and vehicle connectivity. “The sophistication of the safety work that’s going on goes well beyond any commercially available automated or advanced driver assistance system is really inspiring,” Buttigieg said. “We’ve got to make sure it develops the right way, we’ve got to be cautious about how it’s deployed, but you can tell a lot of thought and, of course, a lot of incredibly sophisticated research is going into that.”

Raj Rajkumar

Media

Social

Industry Expertise

Automotive
Information Technology and Services
Computer Networking
Computer Hardware
Computer Software

Education

Carnegie Mellon University

Ph.D.

Electrical and Computer Engineering

1989

Carnegie Mellon University

M.S.

Electrical and Computer Engineering

Articles

Characterization of Natural Cellulosic Fiber from Cereus Hildmannianus

Journal of Natural Fibers

2021

The research article aims to characterize the physicochemical, morphological, thermal and mechanical properties of novel Cereus Hildmannianus Fibers (CHFs) are reported for the first time in this work. The lower density (1.364 ± 0.026 g/cm3) with high cellulose content of the CHF (58.40 ± 0.56 wt.%) provides better tensile strength 2013–2897 Mpa makes it an attractive option for synthetic fibers. FTIR and X-ray analysis proved that CHF is rich in cellulose content with crystallinity index (46.19%) and crystalline size (28.27 nm), which indicates that the CHF is thermally stable until 285.9°C. Moreover, the large crystalline sizes can reduce the water absorption characteristics. The strong presence of microfibril through scanning electron micrographs assists admirable bonding properties. The results are substantiating the potential of CHFs as reinforcement in composites industries with its significant possessions.

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Crashworthiness and comparative analysis of polygonal single and bi-tubular structures under axial loading–experiments and FE modelling

Journal of Theoretical and Applied Mechanics

2021

This article aims to present a report of experimental and numerical investigations on crashworthiness characteristics of single and multi-cell/bi-tubular structures. Novel multi--cell/bi-tubular structures are proposed in order to improve the crashworthiness performance, LS-DYNA FE software is applied for the modelling of axial crashing behaviour to validate with experimental results and a good agreement is observed. The KPIs are used to compare various structures and to determine the best performing ones. The investigations reveal that the HMC4 has significantly obvious effects on the structural crashworthiness and improved 515% energy absorption efficiency. Afterward, a parametric study has been carried out for the best energy absorber.

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Practical task allocation for software fault-tolerance and its implementation in embedded automotive systems

Real-Time Systems

2019

Due to the advent of active safety features and automated driving capabilities, the complexity of embedded computing systems within automobiles continues to increase. Such advanced driver assistance systems (ADAS) are inherently safety-critical and must tolerate failures in any subsystem. However, fault-tolerance in safety-critical systems has been traditionally supported by hardware replication, which is prohibitively expensive in terms of cost, weight, and size for the automotive market. Recent work has studied the use of software-based fault-tolerance techniques that utilize task-level hot and cold standbys to tolerate fail-stop processor and task failures. The benefit of using standbys is maximal when a task and any of its standbys obey the placement constraint of not being co-located on the same processor.

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