Lecture 2.9

№13

13.2 Identify random processes using their realizations

2^nd – stationary process, 1^st – not stationary process.

Lecture 2.10.

You have to define the properties of stationary and not stationary processes.

(Time-invariant random processes).

№14

14.2 Identify feedback loops

(1)

(2)

(3)

(4)

(5)

(6)

1, 5–proportionalfeedback loops;

another feedback loops – differentiating.

№15

15.2Compare the characteristics of the 2^nd order link before and after the introduction of the feedback differentiating loop:

z(t)

x(t)

Thus, we have the change only in dynamic characteristics (transient characteristics).

15.3 Define the order of the control system’s differential equations and define their stability indicators using Mikhailov stability criterion (the 2^nd locus goes through the origin).

System 1 – 5^th order, stable

System 2 – 5^th order, marginally stable.

To increase your grade you have explain the fundamentals of the Mikhailov stability criterion.