I3PM – Identification of a three parameter model

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I3PM – Identification of a three parameter model

Block SymbolLicensing group: ADVANCED

Function Description
The I3PM block is based on the generalized moment identification method. It provides a three parameter model of the system.

Inputs

u	Input of the identified system	Double (F64)
y	Output of the identified system	Double (F64)
u0	Input steady state	Double (F64)
y0	Output steady state	Double (F64)
RUN	Execute identification	Bool
CLR	Block reset	Bool
ips	Meaning of the output signals	Long (I32)
	0 .... FOPDT model p1 … gain p2 … time delay p3 … time constant
	1 .... moments of input and output p1 … parameter $m u 0$ p2 … parameter $m u 1$ p3 … parameter $m u 2$ p4 … parameter $m y 0$ p5 … parameter $m y 1$ p6 … parameter $m y 2$
	2 .... process moments p1 … parameter $m p 0$ p2 … parameter $m p 1$ p3 … parameter $m p 2$
	3 .... characteristic numbers p1 … parameter $κ$ p2 … parameter $μ$ p3 … parameter $σ^{2}$ p4 … parameter $σ$

Outputs

pi	Identified parameters with respect to ips, $i = 1, \dots, 8$	Double (F64)
BSY	Busy flag	Bool
RDY	Ready flag	Bool
E	Error flag	Bool
iE	Error code	Long (I32)
	1 .... Premature termination ( $RUN = off$ ) 2 .... $mu0 = 0$ 3 .... $mp0 = 0$ 4 .... $σ^{2} < 0$

Parameters

tident	Duration of identification [s] $⊙$ 100.0	Double (F64)
irtype	Controller type (control law) $⊙$ 6	Long (I32)
	1 .... D 2 .... I 3 .... ID 4 .... P 5 .... PD 6 .... PI 7 .... PID
ispeed	Desired closed loop speed $⊙$ 2	Long (I32)
	1 .... Slow closed loop 2 .... Normal (middle fast) closed loop 3 .... Fast closed loop

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