Woodward ProAct I, Product Manual

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Manual 04121 ProAct I/II
Woodward 39
Figure 4-5. Linearized Engine Plot
Diesel Engine Setup
Most Diesel engine fuel controls are nearly linear. The dynamics maps may still
be used to accommodate nonlinear conditions caused either by the fuel system
or by linkage between the actuator and the rack. For gain settings that are not
used, set the associated Breakpoint at 100%.
Control Gain Programming Steps
1.
Gain programming is needed whenever the gain of the engine and fuel
system is non-linear. This usually occurs in gas engine applications. A plot
of the fuel system must be determined to properly adjust the gain of the
control to match the gain of the system at all loads.
The plot reflects the actuator output, as seen in Menu 5, versus the engine
load as load is varied from no load to full load.
To construct a gain plot:
a.
Set the Gain A breakpoint for 100%. This ensures that there won't be any
confusion with other settings while plotting the system characteristics. Only
Gain A, Stability, and Actuator Compensation will be used.
b.
Start the engine and obtain good control at no load using Gain A, Stability,
and Actuator Compensation. Record these settings and the actuator output
as displayed in Menu 5.