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步進(jìn)控制：多個(gè)開關(guān)的控制方法
按順序組裝開關(guān)設(shè)備（例如。，
作為控制器輸入的電加熱、多臺(tái)冷卻器）
在比例范圍內(nèi)變化。Step控制器
可為致動(dòng)器驅(qū)動(dòng)、電子或直接驅(qū)動(dòng)
由感測(cè)介質(zhì)激活（例如壓力、，
溫度）。
節(jié)流范圍：在比例控制器中，控制點(diǎn)
受控變量必須通過(guò)的范圍
將終控制元件完全移動(dòng)
工作范圍。以受控
變量（例如，華氏度，相對(duì)百分比
濕度，磅/平方英寸）。也稱為
“比例帶”。在成比例的房間里
恒溫器，驅(qū)動(dòng)所需的溫度變化
操縱變量從完全關(guān)閉到完全打開。
時(shí)間常數(shù)：動(dòng)態(tài)組件所需的時(shí)間，
如傳感器或控制系統(tǒng)達(dá)到63.2
瞬時(shí)（或）總響應(yīng)的百分比
“步驟”）更改為其輸入。通常用于判斷
組件或系統(tǒng)的響應(yīng)性。
Step control: Control method in which a multiple-switch assembly sequentially switches equipment (e.g., electric heat, multiple chillers) as the controller input varies through the proportional band. Step controllers may be actuator driven, electronic, or directly activated by the sensed medium (e.g., pressure, temperature). Throttling range: In a proportional controller, the control point range through which the controlled variable must pass to move the final control element through its full operating range. Expressed in values of the controlled variable (e.g., degrees Fahrenheit, percent relative humidity, pounds per square inch). Also called “proportional band”. In a proportional room thermostat, the temperature change required to drive the manipulated variable from full off to full on. Time constant: The time required for a dynamic component, such as a sensor, or a control system to reach 63.2 percent of the total response to an instantaneous (or “step”) change to its input. Typically used to judge the responsiveness of the component or system.
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