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control systems |
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control systems, combinations of components (electrical, mechanical, thermal, or hydraulic) that act together to maintain actual system performance close to a desired set of performance specifications. Open-loop control systems (e.g., automatic toasters and alarm clocks) are those in which the output has no effect on the input. Closed-loop control systems (e.g., thermostats, engine governors, automotive cruise-control systems, and automatic tuning control automatic tuning control (ATC), method or device to keep a radio or television receiver automatically tuned to a desired frequency or channel. Assuming that the receiver is at least approximately tuned to the desired frequency, a circuit in the receiver develops an ..... Click the link for more information. circuits) are those in which the output has an effect on the input in such a way as to maintain the desired output value. A closed-loop system includes some way to measure its output to sense changes so that corrective action can be taken. The speed with which a simple closed-loop control system moves to correct its output is described by its damping ratio and natural frequency. A system with a small damping ratio is characterized by overshooting the desired output before settling down. Systems with larger damping ratios do not overshoot the desired output, but respond more slowly. See feedback feedback, arrangement for the automatic self-regulation of an electrical, mechanical, or biological system by returning part of its output as input. A simple example of feedback is provided by a governor on an engine; if the speed of the engine exceeds a preset ..... Click the link for more information. . |
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| Business Sold: International Rectifier, a power management technology company in El Segundo, sold its Power Control Systems business to Vishay Intertechnology Inc. Brock Solutions' Foundry Group provides complete engineering and project management services that include the design, development, and deployment of innovative, technologically advanced solutions involving Matchplate Molding Machines, Turntables, Melt and Sand Cooling Control Systems, Com Room Services Control Systems, and Casting Conveyor Systems. Sterling, the first name in modern temperature control, offers a full line of temperature control systems to meet your demanding application needs. |
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control systems