Siemens Module B3 manual For, Step Function for Examining Controlled Systems

Automation and Drives - SCE

2.4 Step Function for Examining Controlled Systems

To examine the behavior of controlled systems, controllers and control loops, a uniform function is used for the input signal: the step function. Depending on whether a control loop element or the entire control loop is examined, the step function can be assigned to the following: the controlled variable x(t), the manipulated variable y(t), the reference variable w(t) or the disturbance variable z(t). For that reason, the input signal, the step function, is often designated as xe(t), and the output signal as xa(t).

for

for

	Preface	Fundamentals	Discontinuous Action Controller Controller Block (S)FB41	Setting the System Appendix
	T I A Training Document		Page 12 of 64	Module
				B3
Issued: 02/2008				Control Engineering with STEP 7