Closed-loop control allows single-phase ac motors to close the gap in performance and efficiency that exists between these motors and other higher-performance, higher-cost motors.

With closed-loop control, poor performance typically manifests itself as deviations from set point. By analyzing these deviations, one can determine if they are caused by suboptimal controller tuning ...

As mentioned earlier, op-amps, passives or simple digital circuits can also perform many of these tasks. Once designed into a system, closed loop fan control can solve the previously described issues.

A better understanding of closed-loop control, and how to tune it, can be found by looking at the individual parts of the PID equation and the effect of each on the controlled output By Bill Dehner ...

However, a closed-loop controller utilizes continuous feedback, facilitating real-time modifications to improve stability, precision, and robustness. This means it is more suitable for fulfilling the ...

The application is a simple closed-loop control of flow generated by a pump. A sensor measures flow for the Arduino, which adjusts a control valve actuator to maintain the specified setpoint.

A signal-injection circuit for control-loop analysis is flat from dc to 200 kHz, isolated from chassis ground and easily constructed with a readily available instrumentation amplifier ...