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Industrial Automation Plant model for the following example The following examples use a plant modeled by a 2 nd order differential equation: y y'T + y" TT = + 1 2 differential equation y m = 1+ sT 21/40 2.2 Continuous plants and regulation 1 1 + s 2 TT Laplace transfer function This transfer function is typical of a plant with slow response, but without deadtime In the examples: T 1 = 1 s TT 2 = 0.25 s 2 m m plant y Temporal response 1.4 1.2 1 0.8 0.6 0.4 0.2 0 step response delay time constant gain 0 1 2 3 4 5 6 7 8 9 10 d ~ 0.2, T= 1.5s time 2
Industrial Automation P-controller: simplest continuous regulator proportional factor regulator m = command u0 = set-point e = error Kp variable plant y 0 = process value the error is amplified to yield the command variable m = K p • e = K p • (u 0 -y 0 ) measurement controlled variable 22/40 2.2 Continuous plants and regulation x 0
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2005 March, HK courtesy ABB 2. Inst
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Industrial Automation The instrumen
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2.1 Instrumentation 2.1.1 Market 2.
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Industrial Automation Binary Signal
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Industrial Automation Precision: re
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Industrial Automation Variable diff
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Industrial Automation Small positio
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Industrial Automation Force measure
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courtesy Parker Motion & Control In
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Industrial Automation 2.1.3.2 Tempe
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Thermo-element (Thermocouple) two d
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Extend procedural languages to expr
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Function Block Diagram (FBD) AUTO A
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Industrial Automation 2.4.2.1 Funct
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Example 1: Example 2: A B external
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Industrial Automation Function Bloc
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Types of Programming Organisation U
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inary elements AND OR XOR S1 SR R Q
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Basic blocks Industrial Automation
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AXIS_REF Function Block library for
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Segment or POU (program organizatio
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Industrial Automation Parallel exec
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esource task task program program I
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Connecting to Input/Output, Method
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Industrial Automation 2.3.5.5 Struc
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Industrial Automation Data Types Si
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Industrial Automation Example of De
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Industrial Automation SFC (Sequenti
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Industrial Automation SFC: Initial
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Industrial Automation SFC: P1, N an
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Variables: Input: In0, In1, In2, In
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Industrial Automation SFC: Structur
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Function Blocks: Continuous (time)
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Industrial Automation Flow Charts O
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Industrial Automation 2.3.5.7 Ladde
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origin: electrical circuit correspo
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Series Parallel Industrial Automati
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Industrial Automation Ladder logic
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Industrial Automation 2.3.6 Instruc
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Industrial Automation Instruction L
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Industrial Automation Programming e
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Industrial Automation Program maint
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Industrial Automation IEC 61131-3 e
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Industrial Automation Limitations o
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