Optimum Control for Nonlinear Dynamic Radial Deformation of Turbine Casing with Time-Varying LSSVM

<table class="table-group" id="tab5"><tr><td><table class="table"><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr><td align="center" colspan="3">Objective values <i>Y</i>, ×10<sup>−4</sup> m</td><td align="center" rowspan="2">Reliability degree</td><td align="center" rowspan="2">Function evaluations</td><td align="center" rowspan="2">Iterations</td><td align="center" rowspan="2">Time elapsed, s</td></tr><tr><td align="left">Before optimization</td><td align="center">After optimization</td><td align="center">Reduced deformation</td></tr><tr><td align="center" colspan="7"><hr/></td></tr><tr><td align="left">8.651</td><td align="center">7.865</td><td align="center">0.786</td><td align="center">
                    0.995 6</td><td align="center">
                    159 1</td><td align="center">
                    37</td><td align="center">823 7</td></tr><tr class="table-tr"><td colspan="7"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Optimization results of casing radial deformation based on T-LSSVM.

Advances in Materials Science and Engineering

tab5

Table 5

Table 5: Optimum Control for Nonlinear Dynamic Radial Deformation of Turbine Casing with Time-Varying LSSVM 