by use of-perturbation method with spatial discretization, the hydraulic transient system controlled by quasilinear partial differential equation was converted to a time-continuous linear system, so that the inverse problem of hydraulic transients under limited pressure could be sol ed with the optimal control theory for time-continuous systems 采用-攝動(dòng)法并經(jīng)過空間離散,將由擬線性偏微分方程控制的有壓瞬變流系統(tǒng)轉(zhuǎn)化為時(shí)間連續(xù)線性系統(tǒng),從而使有壓瞬變流限壓控制反問題能應(yīng)用時(shí)間連續(xù)系統(tǒng)最優(yōu)控制理論來求解。