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===Drawbacks of classical gain scheduling===
* An important drawback of classical gain scheduling approach is that adequate performance and in some cases even stability is not guaranteed at operating conditions other than the design points.<ref>{{cite journal|last=S. Shamma|first=Jeff|title=Gain Scheduling: Potentital Hazards and Possible Remedies|journal=IEEE Control Systems|year=1992|volume=June|issue=3}}</ref>
* Scheduling multivariable controllers is often a tedious and time-consuming task and it holds true especially in the field of aerospace control where the parameter dependency of controllers are large due to increased [[Flight envelope|operating envelopes]] with more demanding performance requirements.
* It is also important that the selected scheduling variables reflect changes in plant dynamics as operating conditions change. It is possible in gain scheduling to incorporate linear [[robust control]] methodologies into nonlinear control design; however the global stability, robustness and performance properties are not addressed explicitly in the design process.
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