"自动控制理论第三章：线性系统时域分析及性能评价方法"

自动控制理论中的第三章主要讨论了线性系统的时域分析。在这一部分，我们首先介绍了典型的输入信号，这对于分析和设计控制系统至关重要。掌握不同类型的输入信号可以帮助我们建立系统模型，从而分析其性能。 在分析控制系统时，我们通常需要考虑系统的暂态响应、稳定性和稳态误差等性能指标。通过时域分析法、频域分析法和根轨迹法等不同方法，我们可以对控制系统的性能进行评估。这些方法可以帮助我们更好地了解系统的工作原理，为系统的优化和改进提供指导。 实际上，控制系统的输入信号往往是不确定的，可能是随机的。在这种情况下，很难用解析的方法来表示输入信号，只能通过一些特殊情况下的预先知道的情况下，才能够用解析的方法或曲线表示。例如，切削机床的自动控制系统就是一个典型的例子。 总的来说，通过对控制系统的时域分析，我们可以更深入地理解系统的性能特征，为系统的设计和优化提供有效的指导。掌握不同的分析方法，可以帮助我们更好地应对控制系统中的各种挑战，提高系统的鲁棒性和稳定性。automated control theory: Chapter 3 Time Domain Analysis of Linear Systems-1.ppt; automated control theory: Chapter 3 Time Domain Analysis of Linear Systems-1.ppt; School of Electrical Engineering First page, previous page, next page, last page; End of automated control theory 7/8/2022 Chapter 3 Time Domain Analysis of Linear Systems Typical input signals Linear time response and performance indexes of linear steady-state systems Transient response of control systems Stability and stability criteria of control systems Steady-state error of control systems School of Electrical Engineering First page, previous page, next page, last page; End of automated control theory 7/8/20223.1 Typical input signals Typical test signals Analyzing control systems Step 1 Build models Step 2 Analyze control performance Analysis methods include: Time domain analysis method Frequency domain analysis method Root locus method Analysis methods of control systems School of Electrical Engineering First page, previous page, next page, last page; End of automated control theory 7/8/20223.1 Typical input signals Typical test signals In fact, the input signals of control system are often unknown and random. It is difficult to represent them analytically. Only in some special cases can they be known in advance and represented by analytical methods or curves. For example, the automatic control of cutting machine tools. When analyzing and designing control systems, it is necessary to evaluate the performance of various control systems.