运用信息论的概念和方法考察受随机干扰的线性多变量控制系统,研究了系统变量的熵率、互信息率和传递函数的H∞熵三者之间的关系,讨论了小熵H∞控制方法的信息论意义.同时得出了系统熵率和互信息率的时域计算方法,为进一步利用信息率作为性能函数研究控制系统探索了新的途径. The concept and method of information theory are used to investigate the linear multivariable control system with random disturbance. The relationship between entropy rate, mutual information rate and H∞ entropy of the transfer function is studied. The entropy H∞ control method The theory of information theory.At the same time, the time-domain calculation method of system entropy rate and mutual information rate is obtained, which explores a new way to further study the control system by using the information rate as the performance function.