Reference Tracking Goal
Purpose
Make specified outputs track reference inputs with prescribed performance and fidelity,
when using Control System Tuner. Limit cross-coupling in MIMO systems.Description
Reference Tracking Goal constrains tracking between the specified signal locations. The
constraint is satisfied when the maximum relative tracking error falls below the value you
specify at all frequencies. The relative error is the gain from reference input to tracking
error as a function of frequency.You can specify the maximum error profile directly as a function of frequency.
Alternatively, you can specify the tracking goal a target DC error, peak error, and
response time. These parameters are converted to the following transfer function that
describes the maximum frequency-domain tracking error:MaxError =PeakErrors+ωcDCError
s+ωc.
Here, ωc is 2/(response time). The following plot illustrates these relationships for an
example set of values.10 Control System Tuning