The southern tip of California's Marin county is separated from the city of San Francisco by the most famous mile-long strip of steel and concrete in the world. Yet, within a 10-minute walk of the Golden Gate's Marin terminus begins a county-wide network of California Wildlife Service signs warning against mountain lion attacks.
Chaos theory is now being studied aggressively. Simple practical control of the double pendulum is extremely promising for many control applications.
Motion control, as other technologies, has its fair share of special terms. Not all of them are rigorously defined; some require blending to suit the specific audience. Here's a sampling of some well-known and not-so-well-known terms.A motion control system typically consists of a controller to process motion algorithms and signals; an amplifier to boost signals to a level needed to p...
With electric motors driving the majority of today’s manufacturing processes, proper motor protection is critical. Not surprisingly, a significant amount of effort and resources have recently been invested in motor protection technology, resulting in cost-effective solutions to many of today’s common motor problems. Motors fail for a number of reasons–moisture and contamination, short circuits, mechanical problems and old age–but the primary reason is excessive heat, caused by excess current (greater than normal motor full load current), high ambient temperatures, and poor ventilation of the motor. The diagram shows the reduced life of a motor at various levels of overheating.
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BUS OF THE MONTH: LonWorks
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A servo system consists of a number of elements (see diagram). One aspect of the system integration process involves matching the servo amplifier to the brushless dc motor. This may seem as simple as selecting the amplifier and motor from the same manufacturer.
Chicago, Ill.— Hundreds of exhibitors showed thousands of innovative products and services at the National Industrial Automation Show during National Manufacturing Week 2001 at McCormick Place. For more coverage, including streaming video clips, click on "NMW 2001" at www.controleng.com. Advantech Automation (Cincinnati, O.