Withclosed loop speed control, the fan controller ensures that the fan isrunning at the desired speed by measuring the actual speed and adjustingthe duty cycle accordingly. Here the host specifies the ...

The programmable logic controller (PLC) is an important component in most modern automation and process control systems today. It's also susceptible to lightning-induced transients. To verify the ...

Discussion of controllers in the continuous process industries typically centers on distributed control systems (DCSs). However, programmable logic controllers (PLCs) play as important a role in the ...