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一、前 言 在控制系统的设计和测试过程中,通常需要与控制对象(装置)参数和状态变量有关的信息。但在实际装置中,参数往往是未知的,而状态变量也难以获得。在参数已知,仅仅状态变量难以获得的情况下,众所周知,用Luenberger的状态观测器可以估算状态变量,但若参数未知,则不能构成这种状态观测器。在这种情况下,需要构成一种既能确定未知参数,又能估算状态变量的自适应系统。这样的自适应系统就是自适应观测器。
I. INTRODUCTION In the design and testing of control systems, there is usually a need for information about control object (device) parameters and state variables. However, in actual devices, the parameters are often unknown, and state variables are difficult to obtain. It is well known that state variables can be estimated using Luenberger’s state observers when the parameters are known and only the state variables are difficult to obtain. However, if the parameters are unknown, the state observers can not be constructed. In this case, an adaptive system needs to be constructed that can both determine unknown parameters and estimate state variables. This adaptive system is adaptive observer.