The Principle of the Argument and Its Consequences

The following sections are included:

• More about Poles in the Right Half Plane

• The Principle of the Argument

• The Proof of the Principle of the Argument

• How are Encirclements Measured?

• First Applications to Control Theory

• Systems with Low-Pass Open-Loop Transfer Functions

• MATLAB and Nyquist Plots

• The Nyquist Plot and Delays

• Delays and the Routh-Hurwitz Criterion

• Relative Stability

• The Bode Plots

• An (Approximate) Connection between Frequency Specifications and Time Specification

• Some More Examples

• Exercises