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Techniques for Conducting Effective Concept Design and Design-to-Cost Trade Studies

Concept design plays a central role in project success for space missions, as the product of concept design effectively locks in the majority of system lifecycle cost. It involves a concurrent investigation of requirements and multiple mission characteristics such as flight dynamics, design, performance, concept of operations, technology, verification approach, launch and ground interfaces, cost, schedule, and risk.

Posted in: Briefs, Electronics & Computers, Information Sciences, Software

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HyDE Model-Based Diagnosis Engine for Stochastic Hybrid Systems

Model-based diagnosis deals with the problem of diagnosing faults in systems using a model of the system for guidance. This problem is complicated by the presence of hybrid dynamics in the system (continuous evolution of the system interspersed with discrete events like commands to change configuration), as well as uncertainties in the form of model approximations and sensor noise. Several model-based technologies have been developed and successfully demonstrated using discrete abstractions of the system as models. These techniques are severely restricted in model expressiveness due to the discrete nature of the models. Moreover, sophisticated model abstraction techniques, as well as algorithms to convert continuous data to discrete form, need to be developed for such an approach to work. Recently, there have been efforts to develop diagnostic engines for hybrid and stochastic systems. However, these techniques have either focused on parametric faults, or use a probabilistic approach to fault identification. Consistency-based approaches that have been successfully demonstrated using discrete models have not been extended to work with stochastic and hybrid models.

Posted in: Briefs, Electronics & Computers, Information Sciences, Software

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Searching, Exploring and Visualizing Data Using Maple

With the ever-expanding sea of available data and data repositories, navigating the vast quantities of information can be a difficult task. Maple, the advanced computing software from Maplesoft, is a powerful and interactive data visualization tool that can help users understand data characteristics through various techniques for visualization and analysis. Maple makes it easy to search, filter, explore and visualize varying types and quantities of data. This paper presents several examples of how Maple can be used to search and filter large data repositories, explore and visualize the data in innovative ways and use the data to predict future behavior.

Posted in: White Papers, Manufacturing & Prototyping, Machinery & Automation, Robotics, Electronics & Computers, Software

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Control Scheme Improves Motor Operation and Interaction

A team of researchers from the Polytechnic University of Bari, Italy, is working to improve how industrial electric drives operate. They propose a new control scheme that will not only improve motor operation, but also how the motor interacts with other systems.

Posted in: News, Motion Control, Motors & Drives, Mathematical/Scientific Software, Simulation Software

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Tool Helps Design Soft Robots That Can Bend and Twist

Designing a soft robot to move organically — to bend like a finger or twist like a wrist — has always been a process of trial and error. Now, researchers from the Harvard John A. Paulson School of Engineering and Applied Sciences and the Wyss Institute for Biologically Inspired Engineering have developed a method to automatically design soft actuators based on the desired movement.

Posted in: News, Implants & Prosthetics, Motion Control, Robotics, Computer-Aided Design (CAD), Software

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Interactive Design of Electrostatic Headphones Using COMSOL Server™

If you’re interested in MEMS-acoustic modeling and want to learn how to provide your colleagues and customers with software tools to collaborate and optimize their designs, then tune into this webinar.

Posted in: On-Demand Webinars, Software

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Scalable and Tileable Aggregate Low-Level Summary Display for Deep Space Network Link Control Tasks

This innovation features critical pieces of information in a single display.The Deep Space Network (DSN) is a collection of three sites around the globe. The positioning of the sites, 120° longitude apart, allows at least one site to see every patch of sky at all times, thus facilitating continuous coverage for any deep space spacecraft that partners with the DSN.

Posted in: Briefs, Software

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