In a pneumatic system, what does the term "dead time" refer to?

In a pneumatic system, "dead time" specifically refers to the delay before the system responds to a change in input. This concept is crucial in control systems, as it highlights the responsiveness of the system to commands or changes in conditions. When an input is applied, whether it be an increase in pressure or a command to actuate a valve, there is often a brief interval before the system begins to react. This delay can influence the overall performance and stability of the system, especially in processes requiring quick adjustments.

Understanding dead time is vital for technicians and engineers as it impacts control strategies. Systems with significant dead time may require specialized PID tuning techniques to ensure that the system maintains stability and achieves desired performance. In practical terms, recognizing the effects of dead time enables better predictive maintenance and system optimization.