建筑环境与能源应用工程专业英语14.ppt

Frequently used words and phrases: control mode 控制模式 On/Off Control 开/关控制 Proportional control 比例控制 Floating control 浮动控制 Integral control 积分控制 Derivative control 微分控制 Proportional plus Integral (P+I) Control 比例加积分控制 Proportional plus Derivative (P＋D) Control 比例加微分控制 Proportional plus Integral plus Derivative (P+I+D) Control 比例加积分加微分控制 final control element (FCE) 终端控制元件 Open loop control 开环控制 Closed loop control 闭环控制 signal 信号 heater battery 加热器组 air curtain 空气幕 sensor 传感器 electro-mechanical system 电动机械系统 pneumatic system 气动系统 pressure switch 压力开关 humidistat 湿度控制器 time switch 定时开关 building automation system (BAS) 建筑自动化系统 energy management system (EMS) 能源管理系统 direct digital control (DDC) 直接数字控制 1. A controller can be made to operate a final control element (FCE), e.g. a valve, damper, or luminaire in a number of different ways in response to a signal. 2. The control mode does not define the means by which control is effected, which may be through mechanical, electro-mechanical, electronic or pneumatic systems. 3. The control sensor usually takes the form of an on/off thermostat, pressure switch, humidistat, time switch, etc. and operates such that below the set point the contacts open.