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IESF 2013: System Modeling and Analysis

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Technical Session
  • A Cost Effective Hardware Option for SWaP and Obsolescence Challenges
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    TECHNICAL SESSION Reducing size, weight and power (SWaP), improving reliability, and addressing parts obsolescence are increasing concerns in mil-aero hardware development projects. A Via Configurable ASICs (VCA) can be an optimal solution to address these challenges. VCA technology integrates silicon-proven analog and digital resources onto pre-configured ASIC arrays requiring only a single via mask layer to customize the design and finalize the manufacturing process. VCAs offer a dramatically reduced-cost alternative to ASIC design, supporting both low volumes and fast development cycles. This session discusses and demonstrates how a systems or application engineer, with no IC design or modeling experience, can quickly develop and test their own custom mixed-signal integrated circuit. Instead of picking discrete and COTS parts from a catalog, the engineer can design their circuit interactively in a simple, schematic-based design environment, test it, and then have it quickly implemented in a VCA platform. The design environment (built on Mentor Graphics SystemVision tool) also supports multi-discipline system development and verifying the chip in the context of its resident system.

Presenter: Reid Wender, VP of Sales and Marketing, Triad Semiconductor
  • An xtUML Methodology for Efficient Model-Driven, Safety-Critical Software Development
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    TECHNICAL SESSION Today’s mil-aero programs are facing pressure from both an ever-growing, ever-evolving list of customer requirements as well as increasing certification requirements. This is driving companies to seek out and establish modern development methodologies that focus on both development efficiency and ease of certification compliance. Development efficiencies (including reuse, early testing, architectural optimization, abstraction, and automation) and compliance-driven software development methodologies (requiring a structured process, clear documentation, proof of thorough testing, and qualification of tools) do not need to be at odds with each other. This session introduces a model-driven methodology based on executable and translatable UML (xtUML), which provides the foundational elements of systems and software development that address both the efficiency and certification needs of today’s safety-critical programs.

Presenter: Anders Eriksson, Principal Engineer, SAAB Aeronautics
Presenter: Michelle Lange, Marketing Manager, System Modeling and Analysis, Mentor Graphics
  • Facing the “More Electric” Design Challenge with “More Integrated” Modeling Capability
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    TECHNICAL SESSION System Integrators are facing unrelenting challenges as the “More Electric Vehicle” tsunami continues across multiple design beachheads. Not only are new technologies being introduced to replace traditional actuation and control approaches, but the “deep knowledge” of how they work and how to effectively integrate them into efficient and high performance systems is now distributed across multiple engineering disciplines and often across multiple corporate boundaries. Fortunately, there is new standards-based modeling format and tool integration technology that supports multi-disciplinary design team collaboration. This session will demonstrate these capabilities as they apply to power generation and distribution systems (3-Phase AC), power conversion (AC/DC and DC/DC), and motor drive actuators in motion control systems. Tool integration includes co-simulation with LabVIEW™, Simulink®, C/C++, and SystemVision® (as well as Excel® for experiment control and automated stress analysis), and FEA-based model generation/import.

Presenter: Mike Donnelly, Principal Engineer, Mentor Graphics
  • Knowledge Reuse: Leveraging Model “IP” to Accelerate the Design of Integrated Systems
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    TECHNICAL SESSION Electro-mechanical actuation systems are becoming more common in aerospace applications. Systems that have been traditionally based on hydraulic-mechanical actuators are now being replaced by electro-mechanical actuation systems in pursuit of the more electric airplane. The complex interactions among the mechanical, electro-magnetic, electronics, and control aspects of these systems demand comprehensive modeling and simulation capability in order to build useful virtual prototypes. A fairly significant time investment in model development is required to achieve high-value results, such as making good system trade-offs or identifying problems and solutions before the hardware is available. This model development cost is highest the first time this methodology is deployed. But similar to the benefits of “circuit reuse,” the knowledge “IP” that has been stored in these models can be rapidly and effectively reused on subsequent projects. This presentation will cover the multiple insights and efficiencies gained by the design team for an electro-magnetic brake system.

Presenter: Mike Shaw, Electrical Engineer, UTC Aerospace Systems
  • Tool Qualification using DO-178C and DO-330: A Case Study
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    TECHNICAL SESSION It is impossible to verify a design by testing every timing corner condition, or to find all unintentional interactions in a network within the timeframe of a typical project. And yet, the DO-178 certification standard demands the highest level of rigor to ensure aircraft safety. Having a tool that can perform complete verification of a complex network system in minutes, and be able to obtain certification credit for that verification, can result in huge savings during development and certification.
    DO-178C introduced DO-330, Software Tool Qualification Considerations, as well as Tool Qualification Levels (TQL) 1 through 5. Marty Gasiorowski worked with Mentor Graphics in 2012 to meet the objectives of DO-330 for Volcano AeroQ , a TQL-5 tool. This was one of the first, if not the first, project to use DO-178C and DO-330.
    Volcano AeroQ analyzes communication design in different aspects, such as utilization, queue delays, jitter, etc. The output of such analysis can be used to optimize communication to improve overall system performance. The output of the tool is a verification artifact that serves as credit towards certification of the communication design. If verification fails, the generated report clearly describes the errors found and guides the user on how to correct these. This presentation introduces Volcano AeroQ, a qualified communication verification and analysis tool for multi-protocol airborne network systems. It summarizes the processes used in the certification efforts and the key differences compared to DO-178B Verification Tool Qualification.

Presenter: Marty Gasiorowski, FAA DER and President, Worldwide Certification Services
Presenter: Michael Chen, Early Stage Programs Business Unit Director, Mentor Graphics