Three basic principles for the position optimization of equipment rooms,such as the environment priority,the principle of shortest network length and the smallest ball adjustment principles,were introduced.

An optimization combining structure optimization with position optimization is developed,and more attention is given to structure optimization in comparision with old optimization method.

Meanwhile, the location optimization considering curvature and torsional curvature is performed and four location areas are obtained to locate the chip for increa.

A new mathematic model of location optimization for viscoelastic dampers is established.

Based on the object of minimizing the control energy, a criterion for the optimal placement of piezoelectric actuators patched on beams was proposed.

The model of placement optimization for proxies was constructed on the basis of graphic theory and a tree-like structure was built from Web servers to clients.

In this paper D optimal criteria is extended from one dimensional case to two dimensional case to investigate the placement optimization problem of piezoelectric patches bonded to the flexible plate for active vibration control.