Architecture Modeling - SPES 2020

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Pattern S12: failureCondition failureCondition is defined by: event occurs more than timeunit [earlier|later] than event This pattern defines a failure condition by too late (too early) occurred events. This is a derived pattern from S9. Natural Language Requirement: If the airbag inflates later than 60ms after the detection of the crash, it is considered as a failure. Pattern based RSL: failureCondition LateAirbagInflation is defined by: inflation occurs more than 60ms later than crashDetection 6.1.1.4 Real-Time Pattern The detailed specification of real-time systems leads to special real-time requirements. In order to express these requirements dedicated real-time patterns are necessary. Tools for real-time analysis usually work on execution times, deadlines and activation rates. The patterns presented below can be used to express the most relevant properties. Pattern R1: event occurs sporadic with minperiod period [and maxperiod period] [and jitter jitter] This pattern describes the sporadic occurrence of an event. The minimal distance of the ideal occurrences is defined by minperiod, which can be delayed by an additional jitter. If maxperiod is given this specifies the maximal distance between the ideal occurrences. The minimal distance between the real occurrences can be constrained by Pattern R3. Natural Language Requirement: Processing of received data is necessary at most each 10ms and may jitter 1ms. Pattern based RSL: dataReceived occurs sporadic with minperiod 10ms and jitter 1ms idle (0
Pattern R2: Event occurs each period [with jitter jitter] This pattern describes the periodic occurrence of an event such as the activation of a task. The event can be delayed by an additional jitter. This is a derived pattern from R1 such that minperiod==maxperiod. Natural Language Requirement: The diagnosis task shall be executed every 10ms and may jitter 1ms. Pattern based RSL: diagnosisTaskActivate occurs each 10ms with jitter 1ms Pattern R3: Delay between event and event within interval This pattern specifies the minimum and maximum distance between two events. The Order of the occurrences of the events is relevant here. Natural Language Requirement: The response time of the diagnosis task shall be 10ms +/- 1ms. Pattern based RSL: delay between diagTaskStart and diagTaskFinished within [9ms, 11ms] Observers for iterative interpretation with open and closed intervals: e1 |clk:=0 idle e2 && (l
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Architecture Modeling ∗ Andreas B
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Contents 1 Introduction 1 2 Quick-T
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1 Introduction This document propos
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Architecture Modeling allowing to m
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Architecture Modeling creating a vi
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Architecture Modeling the design it
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Architecture Modeling of the logica
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Architecture Modeling realization o
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Architecture Modeling can usually o
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3 The Architecture Meta-Model In Se
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Abstraction-Levels (detail increase
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3.2.2 Functional Perspective Archit
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Architecture Modeling The semantics
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Architecture Modeling expressed by
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Architecture Modeling computing cap
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3.2.5 Geometrical Perspective Archi
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ShapeCompositionOperator intersecti
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Architecture Modeling The constrain
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Architecture Modeling of particular
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Architecture Modeling Shape that de
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Architecture Modeling Conjugation o
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RichComponent Architecture Modeling
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MultiplicityElement +part 0..* Rich
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ComponentC Architecture Modeling pa
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4 Steps in Component-Based Design T
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Architecture Modeling Assume/guaran
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Architecture Modeling When specifyi
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Architecture Modeling next selectio
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Architecture Modeling ports must ha
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established if (and only if): Archi
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12°C < tempSelect < 35°C actTemp
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Architecture Modeling The component
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Architecture Modeling 4.3.2 Establi
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Architecture Modeling a mapping is
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Architecture Modeling Another impor
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5 Using the Architecture Meta-Model
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Architecture Modeling Design proces
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Architecture Modeling abstraction l
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Pwr1 Pedal_Pos1 Pwr2 Pedal_Pos2 CMD
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Architecture Modeling Figure 5.4: O
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Architecture Modeling Figure 5.7: L
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Architecture Modeling Figure 5.9: T
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Architecture Modeling Figure 5.12:
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Page 111 and 112: Architecture Modeling patterns, cap
Page 113 and 114: Architecture Modeling 6.1 Syntax an
Page 115 and 116: 6.1.1.1.1 Attribuute Definit tion a
Page 117 and 118: Constrrain Eventts with Co ondition
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Page 121 and 122: Formalization: whenever StartButton
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Page 125 and 126: 6.1.1.1.1.3 Conditions Conditions c
Page 127 and 128: 6.1.1.1.2.2 Seammless Con ncatenati
Page 129 and 130: e3 && (clk==0) e1 idle pre e1 idle
Page 131 and 132: Pattern whenever event occurs condi
Page 133 and 134: If the brake force is above 80% for
Page 135 and 136: Pattern S3: Failure shall not be ca
Page 137: Pattern S9: failureCondition failur
Page 141 and 142: idle e1 |clk:=0 e2 && (l
Page 143 and 144: The function : allocates a singl
Page 145 and 146: Examplees of clocks: • Run: {c=0@
Page 147 and 148: Architecture Modeling 1. For σ ∈
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Page 151 and 152: Architecture Modeling Definition 6.
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Page 155 and 156: Architecture Modeling Decomposition
Page 157 and 158: Bibliography [1] ARINC 653 - Avioni
Page 159 and 160: Architecture Modeling [26] Holger G
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Architecture Modeling - SPES 2020

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