Euler方法 用C语言实现，并求解常微分方程组-The m framework appropriately generalizes notions such as gain margin, phase

margin, disturbance attenuation, tracking, and noise rejection into a common

framework suitable for analysis and design, in both single-loop and multiloop

feedback systems. Even when working with single-loop feedback systems, some

multi-input, multi-output (MIMO) systems arise during the analysis. Hence, a

unified framework to deal with MIMO linear systems is important, with full

support for both the time and frequency domain. m-Tools provides the

capability to build complex interconnections (such as cascade, parallel, and

feedback connections), compute properties (such as poles and zeros), calculate

time and frequency responses, manipulate these responses (FFT for the time

domain signals, Bode analysis for the frequency domain functions), and plot

results. m-Tools supports two data types in addition to the standard matrices:

SYSTEM matrices for state-space realizations