Murugesan, Anitha

Email Address
ORCID
Disciplines
Research Projects
Organizational Units
Position
Introduction
Research Interests

Filters

20142
2
2
Reset filters

Settings

Search Results

Now showing 1 - 2 of 2
  • Publication
    From Requirements to Code: Model Based Development of a Medical Cyber Physical System
    (2014-07-01) Murugesan, Anitha; Heimdahl, Mats; Whalen, Michael; Kim, BaekGyu; Rayadurgam, Sanjai; Sokolsky, Oleg; Komp, John; Lee, Insup; Duan, Lian
    The advanced use of technology in medical devices has improved the way health care is delivered to patients. Unfortunately, the increased complexity of modern medical devices poses challenges for development, assurance, and regulatory approval. In an e ort to improve the safety of advanced medical devices, organizations such as FDA have supported exploration of techniques to aid in the development and regulatory approval of such systems. In an ongoing research project, our aim is to provide effective development techniques and exemplars of system development artifacts that demonstrate state of the art development techniques. In this paper we present an end-to-end model-based approach to medical device software development along with the artifacts created in the process. While outlining the approach, we also describe our experiences, challenges, and lessons learned in the process of formulating and analyzing the requirements, modeling the system, formally verifying the models, generating code, and executing the generated code in the hardware for generic patient controlled analgesic infusion pump (GPCA). We believe that the development artifacts and techniques presented in this paper could serve as a generic reference to be used by researchers, practitioners, and authorities while developing and evaluating cyber physical medical devices.
  • Publication
    Linking Abstract Analysis to Concrete Design: A Hierarchical Approach to Verify Medical CPS Safety
    (2014-04-14) Murugesan, Anitha; Sokolsky, Oleg; Rayadurgam, Sanjai; Whalen, Michael; Heimdahl, Mats; Lee, Insup
    Complex cyber-physical systems are typically hierarchically organized into multiple layers of abstraction in order to manage design complexity and provide verification tractability. Formal reasoning about such systems, therefore, necessarily involves the use of multiple modeling formalisms, verification paradigms, and concomitant tools, chosen as appropriate for the level of abstraction at which the analysis is performed. System properties verified using an abstract component specification in one paradigm must then be shown to logically follow from properties verified, possibly using a different paradigm, on a more concrete component description, if one is to claim that a particular component when deployed in the overall system context would still uphold the system properties. But, as component specifications at one layer get elaborated into more concrete component descriptions in the next, abstraction induced differences come to the fore, which have to be reconciled in some meaningful way. In this paper, we present our approach for providing a logical glue to tie distinct verification paradigms and reconcile the abstraction induced differences, to verify safety properties of a medical cyber-physical system. While the specifics are particular to the case example at hand - a high-level abstraction of a safety-interlock system to stop drug infusion along with a detailed design of a generic infusion pump - we believe the techniques are broadly applicable in similar situations for verifying complex cyber-physical system properties.