Mike: Nearly every analog instrument uses the 4-20 mA loop. Field transmitters, positioners, and variable frequency drives ...

Control systems have built-in or add-on process historians that can be used for viewing process trends. Figure 1. Troubleshooting the root cause of poor control loop performance. ... the control loop ...

Once designed into a system, closed loop fan control can solve the previously described issues. Beat frequencies from slightly out of sync fans are easily eliminated. Precise RPM control also allows ...

A manufacturer of thermal system components has introduced an integrated control loop to the market. With its EZ-Zone ST, Watlow Electric Manufacturing Co. (St. Louis) is touting its claim as ...

In motion control applications, you frequently hear all sorts of loops -- open, closed, current, torque, speed, voltage, and so on. Here, we define and explain these terms. Raymond C. Blatt and ...

#3: The Non-invasive Assessment Accurately Determines the Bandwidth of the Control Loop A side benefit of the non-invasive assessment is that it also provides the exact control loop bandwidth for ...

Robots use both open and closed control loop systems to maintain a process variable at a desired set ... After taking this class, users will be able to describe a robot control system. A foundation in ...

Both of our open-loop control system examples above could easily be converted to closed-loop systems. A more advanced light switch might take input from a photo cell, ...

UNDERSTANDING CLOSED-LOOP FAN SPEED CONTROL By Ken W. Gay, SMSC When implementing cooling solutions for electronic equipment, system designers are confronted with a complex set of variables.

On my first project as a combustion control engineer, I was responsible for loop checks and for watching the experts tune the system controls. The first loop I tried to tune solo was the drum ...