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系统辩识是在控制论、数理统计及随机过程等理论基础上发展起来的一门新兴学科。由于系统辩识能在不清楚物理机理的情况下建立各种过程的数学模型,所以近年来它在控制工程、机械、动力、化工、地质、气象、生物、经济等各领域都得到广泛的使用。用系统辨识可对一个过程进行控制、预报、决策、诊断、认识等。系统辨识的理论及方法,无疑地亦是对液压系统及其元件的动态特性进行研究及控制的一种有利的工具,所以本刊拟分六期系统而通俗地介绍系统辨识的基本理论及方法,目的是使读者能掌握和使用系统辩识这一有利工具。
Systematic identification is a new subject developed on the theories of cybernetics, mathematical statistics and stochastic processes. In the recent years, it has been widely used in various fields such as control engineering, mechanics, power engineering, chemical engineering, geology, meteorology, biology, economy and so on, because system identification can establish mathematical models of various processes without knowing the physical mechanism. . System identification can be a process control, forecasting, decision-making, diagnosis, awareness and so on. The theory and method of system identification are undoubtedly also an advantageous tool for researching and controlling the dynamic characteristics of hydraulic system and its components. Therefore, we systematically introduce the basic theory and method of system identification , The purpose is to enable readers to grasp and use the system to identify this useful tool.