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“究竟是频域方法好,还是状态空间方法好?”这是当前热烈争论的问题。正确的回答要有一个历史的观点:状态空间方法本来就是为克服频域方法的缺点而产生的,它的蓬勃发展本身就说明了它的优点和生命力。对状态空间方法全盘肯定或否定显然都是不对的。简单地说两种方法各有长短,应互相补充,固然万无一失,但更认真一点的态度则应深入细致地研究二者的异同点
“Is it good in the frequency domain method, or is the method of the state space good?” This is the current heated debate. The correct answer is to have a historical point of view: the state-space approach was originally developed to overcome the shortcomings of the frequency-domain approach, and its flourishing development has demonstrated its own merits and vitality. It is obviously wrong to affirm or negate the method of state space completely. To put it simply, each of the two methods should have its own length, which should be complementary to each other. However, the more serious attitude should be to study the similarities and differences between the two methods