DIGITAL PID USED IN INDUSTRY
DIGITAL PID USED IN INDUSTRY Digital controllers have some advantages over analog controllers for proportional-integral-derivative (PID) applications. James F. Beall, principal process control consultant, Industry Solutions Group, Emerson Process Management, explained how digital control may offer additional process control system efficiencies by answering five questions. . A PID controller is an instrument used in industrial control applications to regulate temperature, flow, pressure, speed, and other process variables. PID (proportional integral derivative) controllers use a control loop feedback mechanism to control process variables and are the most accurate and stable controllers. PID control is a well-established way of driving a system toward a target position or level. It's practically ubiquitous as a means of controlling temperature and finds application in myriad chemical and scientific processes as well as automation. PID control uses close...