... Figure 44 - Heat exchanger 45 Figure 45 - Heat exchanger with single PID controller 46 Figure 46 - Heat exchanger with cascade control. 47 Figure 47 - Cascade block diagram 47 Figure 48 - The ... 54 Figure 53 - Air and Fuel Controls 56 Figure 54 - Override Loop 58 Figure 55 - External Feedback and Override Control 59 Figure 56 - Combustion Cross Limiting 60 Figure 57 - Feedforward ... time). Dominant-lag processes are those that consist of a dead time plus a single significant lag, with all other lags small compared to the major lag. Multiple-lag or non-dominant-lag processes...