Development of a Novel Disturbance Observer Based Fractional Order PD Controller for a Gun Control System

<table class="table-group" width="800px"><tr class="fig-image" id="a"><td><img alt="284636.fig.005a" src="https://static.hindawi.com/articles/tswj/volume-2014/284636/figures/284636.fig.005a.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(a) </b>Tracking error</td></tr></table></td></tr><tr class="fig-image" id="b"><td><img alt="284636.fig.005b" src="https://static.hindawi.com/articles/tswj/volume-2014/284636/figures/284636.fig.005b.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(b) </b>The estimated external disturbance signal</td></tr></table></td></tr></table>

<table>Tracking performance of the control system with external disturbance.</table>

The Scientific World Journal

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Figure 5

Figure 5: Development of a Novel Disturbance Observer Based Fractional Order PD Controller for a Gun Control System 