Drivven, Inc.
Throttle Driver Module Kit
© Drivven, Inc. 2009
• Throttle Driver Module Kit User’s Manual • D000017 • Rev B
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a small position away from the physical limits.
It is recommended that a filter be implemented on throttle position. A second order, lowpass
Butterworth filter with a cuttoff frequency of 25Hz is suggested. The filter is most effective during
small-error control. Please note that the throttle_rt_data_convert_revx.vi already implements a
25 Hz filter on the analog input voltages. Therefore, if this VI is used for position, then a filter is
not required.
It is recommended that the user begin control calibration with zero for all Lead/Lag, PID and
compensation calibration parameters. Begin tuning PID gains for angles above ThetaLH. Then
introduce TLead and TLag values as necessary. Then begin tuning PID gains for angles below
ThetaLH. ULH and US compensation should be tuned last. The default values saved for the
example application were derived for a 68mm Bosch DV-E5 throttle body. The default values will
work well for smaller throttle bodies, with minor adjustments.
Note: ThetaR should not be allowed to exceed the minimum and maximum
angles of the throttle. This will force the controller to drive more current
than the throttle or module can sustain. The force exerted may also
mechanically damage the throttle body.
