波倾角 meaning in English

slope of wave surface
wave slope

By the simulation results , it is verified to have excellent performance . a class of uncertain nonlinear systems which can be transformed into strict feedback nonlinear systems is investigated based on feedback linearization approach of differential geometry . an adaptive robust controller with l2 - gain is proposed by using backstepping technique . the numerical method is given and it is proved to be practical by simulation results . lt is a more practical method to solve hji for a special nonlinear system because the problem to solve hji is very difficult in general case , and only get the approximate solution when it can be solved . an effective method to solve hji is presented for a class of nonlinear system which is ordinary
考虑到一般情况下，求解hji是非常困难的，并且也只能得到近似解，因此，在系统设计时，针对具体非线性系统的特殊结构以求解hfl是系统设计的一种行之有效的方法，基于以上考虑，对一类具有广泛工程背景的非线性系统，提出了一种求解hfl的有效方法，便于实际应用。最后，从波能谱的角度，研究随机海浪的仿真问题，给出了船舶横摇仿真中需要的随机海浪有效波倾角的仿真方法。