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AnnexF/lag1_st.txt
author Edouard Tisserant <edouard.tisserant@gmail.com>
Fri, 26 Apr 2024 09:27:21 +0200
changeset 1105 8128cad6a6e3
parent 0 fb772792efd1
permissions -rwxr-xr-x
merge
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
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 FUNCTION_BLOCK LAG1
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   VAR_INPUT
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     RUN : BOOL ;     (* 1 = run, 0 = reset *)
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     XIN : REAL ;     (* Input variable *)
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     TAU : TIME ;     (* Filter time constant *)
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     CYCLE : TIME ;   (* Sampling time interval *)
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   END_VAR
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   VAR_OUTPUT XOUT : REAL ; END_VAR  (* Filtered output *)
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   VAR K : REAL ;     (* Smoothing constant, 0.0<=K<1.0 *)
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   END_VAR
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   IF RUN THEN XOUT := XOUT + K * (XIN - XOUT) ;
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   ELSE XOUT := XIN ;
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        K := TIME_TO_REAL(CYCLE) / TIME_TO_REAL(CYCLE + TAU) ;
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   END_IF ;
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 END_FUNCTION_BLOCK
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