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proportional control |
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proportional control [prə′pȯr·shən·əl kən′trȯl] (control systems) Control in which the amount of corrective action is proportional to the amount of error; used, for example, in chemical engineering to control pressure, flow rate, or temperature in a process system. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| To meet these requirements, Brock delivered a new 20 x 24 molding machine complete with a shift-free squeeze station; variable squeeze pressure; single-piece cope and drag flasks made of cast stainless steel wear-resistant properties for strength, durability and easy replacement; proportional control on key hydraulic circuits; mold pins that center the bottom board in the same location every time; and drag draw pins with replaceable seats. Single- and three-phase a-c variable-voltage controls for proportional control of electric heat available from 10 to 1200 amps/phase at all standard voltages to 600 VAC. Temperature control is said to be highly accurate, and the control system provides for proportional control of motions with velocity speed controls. |
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