A general analytical solution is used to solve vibration problems of rectangular plates with intermediate support, here.
应用一般解析解来求解具有中间支承矩形板的自由振动问题。
Using a general analytical solution of a plate, the vibration problem of rectangular plates with mixed boundary conditions has been solved.
应用一般解析解来求解具有中间支承的正交异性矩形板的自由振动问题。
But for the general optimal control for nonlinear systems with time-delay, the analytical solution does not exist.
非线性时滞系统的最优控制问题是非常难解决的研究课题。
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