Direct Surge Margin Control for Aeroengines Based on Improved SVR Machine and LQR Method

<table class="table-group" width="800px"><tr class="fig-image" id="a"><td><img alt="870215.fig.007a" src="https://static.hindawi.com/articles/mpe/volume-2013/870215/figures/870215.fig.007a.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(a) </b>Test results of <svg height="15.5375" id="M183" style="vertical-align:-3.276pt" version="1.1" viewbox="0 0 22.174999 15.5375" width="22.174999" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg> model</td></tr></table></td></tr><tr class="fig-image" id="b"><td><img alt="870215.fig.007b" src="https://static.hindawi.com/articles/mpe/volume-2013/870215/figures/870215.fig.007b.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(b) </b>Test results of <svg height="15.5375" id="M184" style="vertical-align:-3.276pt" version="1.1" viewbox="0 0 22.174999 15.5375" width="22.174999" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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l-31 22q-32 23 -53.5 41.5t-45 57t-23.5 77.5q0 82 58 132.5t156 50.5q46 0 101 -17l18.5 -6t17 -6t8.5 -3q-4 -55 0 -147z" id="x1D446"></path></g>
<g transform="matrix(.012,-0,0,-.012,8.225,15.475)"><path d="M797 0h-214v26q46 5 58 17.5t12 63.5v167q0 116 -88 116q-48 0 -112 -52q3 -18 3 -42v-195q0 -46 11 -58t53 -17v-26h-214v26q48 5 59.5 17t11.5 60v172q0 115 -88 115q-47 0 -109 -52v-235q0 -47 10 -59.5t48 -17.5v-26h-211v26q50 5 62.5 17t12.5 60v207q0 48 -9 59.5
t-52 18.5v23q79 14 139 41v-81q3 2 29 20.5t44 29.5q45 28 81 28t66 -22t46 -61q25 20 83 57q39 26 76 26q59 0 93 -40t34 -113v-193q0 -49 10.5 -60.5t54.5 -16.5v-26z" id="x6D"></path></g><g transform="matrix(.012,-0,0,-.012,17.97,15.475)"><path d="M54 437h47v21q0 48 11 83q23 72 77 118q55 46 110 53q53 -3 79 -34q13 -16 5 -35q-5 -13 -19 -24t-27 3q-37 37 -81 37q-34 0 -53 -29q-24 -37 -23 -153v-40h118q5 -7 1.5 -21t-11.5 -19h-108v-287q0 -55 13 -67t73 -18v-25h-236v26q49 5 60 16.5t11 60.5v294h-70l-4 11z
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</svg></td></tr></table></td></tr></table>

<table>Precision test for surge margin prediction model in Matlab environment.</table>

Mathematical Problems in Engineering

fig7

Figure 7

Figure 7: Direct Surge Margin Control for Aeroengines Based on Improved SVR Machine and LQR Method 