Articles

Using Event Systems and DMA to Cut Power Consumption

The trick to exploiting the ultra lowpower characteristics of microcontrollers with 100 nA sleep mode power consumption is to keep them in sleep mode as much as possible. The problem is that the growing number of on-chip peripherals and the increasingly dataand interrupt-intensive nature of modern applications make this a very difficult objective to achieve.

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Using Dynamic Parameters to Measure Digitizer Performance

Much confusion exists about characterizing the performance of a highspeed digitizer device. Nominal vertical resolution is routinely presented as an indicator of a digitizer’s performance, but the relevance of this parameter is dubious since a digitizer’s true performance is characterized by the Dynamic Parameters*.

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Designing Versatile COTS Data Acquisition Systems

Designing a versatile data acquisition (DAQ) system begins by comparing features of the signal of interest to the capabilities of current state-of-the-art A/D converters. Specifically, signal bandwidth and maximum signal frequency are compared to the A/D maximum sampling rate and bandwidth. The specifications in Table 1 are typical of current A/Ds.

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Return on Investment of Model-Based Design: Increasing Innovation Capacity

Jon Friedman Aerospace Industry Marketing Manager The MathWorks Natick, MA Given the current economic conditions, companies must continue to deliver existing products as they develop the products of tomorrow, without increasing the engineering staff. To accomplish this paradoxical challenge, innovative companies have adopted Model-Based Design over traditional development methods.

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Getting Green and Staying Green

Avoiding the High Hidden Costs of Noncompliance EU RoHS, China RoHS, Korea RoHS, California RoHS, ELV, REACH – the list of environmental regulations for reducing hazardous substances in products keeps growing. What, exactly, are the costs if your products fail to comply? Missed customer requirements, blocked shipments, costly redesigns, and scrapped parts are just the tip of the iceberg. No doubt, the stakes are high, with potentially millions of dollars in lost revenue and related costs.

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Electric Actuators Deliver Energy Efficient, Low Maintenance Solutions

Machine designers and end users find themselves balancing sometimes opposing priorities such as improving energy efficiency while minimizing adverse impact on the environment, at the same time ensuring performance (e.g., precision, reliability) is not compromised. A key trend towards meeting the challenges has been to shift from hydraulic actuation towards electric actuation, especially in applications characterized by high degree of responsiveness, space constraints, high uptime/low maintenance, low energy consumption, and minimal environmental impact.

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Designing Electro-Optical Sensors Using Collaborative Systems Engineering Technology

About 25% of space-borne electro-optical (EO) sensor programs in both the civil and National Security Space (NSS) communities have experienced reduced on-orbit reliability, as well as cost and schedule overruns of 100% or more1-3. Many of these EO sensor program over-runs can be largely attributed to delays, errors, and inadequate communication that occur at the many handoff points between team members and contractors in the current design process. This leads to the late discovery of technical problems, making them more expensive and time-consuming to fix.

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