On the study of edp estimation algorithm , first , the linear robust luenberger observer technique is studied . then , a brand - new nonlinear edp estimation algorithm is developed with full consideration of the characters of engine nonlinear simulation program 在研究发动机部件性能变化参数的估计问题时，首先研究了线性鲁棒luenberger观测器，并针对线性观测器存在的问题，根据发动机部件级非线性数学模型的特点，提出了一种非线性发动机部件性能变化参数估计的方法。
Bonavito ' s algorithm is verified to be specially suitable to restore complicated images in a normal pc because of its good performance and short processing time , and so is zhuang ' s algorithm which is extended here for coping with the cases of low noise level and sparse data 本文对微分方程算法进行了推广，使之可以处理低噪声及残损图像，还研究了恢复实际图像时点扩展函数和噪声参数的估计问题并提出了解决办法，并对由于边界截断而导致的gibbs效应的常规处理方法做了改进。
