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Mancini, T.; Mari, F.; Melatti, I.; Salvo, I.; Tronci, E.; Gruber, J.; Hayes, B.; Prodanovic, M.; Elmegaard, L. | ||||
| Title | Parallel Statistical Model Checking for Safety Verification in Smart Grids | Type | Conference Article | ||
| Year | 2018 | Publication | 2018 IEEE International Conference on Communications, Control, and Computing Technologies for Smart Grids (SmartGridComm) | Abbreviated Journal | |
| Volume | Issue | Pages | 1-6 | ||
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| Notes | Approved | no | |||
| Call Number | MCLab @ davi @ mancini-etal:2018:smartgridcomm | Serial | 170 | ||
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| Author |
Mancini, T.; Mari, F.; Melatti, I.; Salvo, I.; Tronci, E.; Gruber, J.K.; Hayes, B.; Prodanovic, M.; Elmegaard, L. | ||||
| Title | User Flexibility Aware Price Policy Synthesis for Smart Grids | Type | Conference Article | ||
| Year | 2015 | Publication | Digital System Design (DSD), 2015 Euromicro Conference on | Abbreviated Journal | |
| Volume | Issue | Pages | 478-485 | ||
| Keywords | Contracts; Current measurement; Load management; Power demand; Power measurement; State estimation; Substations; Grid State Estimation; Peak Shaving; Policy Robustness Verification; Price Policy Synthesis | ||||
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| Notes | Approved | no | |||
| Call Number | Sapienza @ preissler @ Mancini_etal2015_3 | Serial | 136 | ||
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| Author |
Mari, Federico; Melatti, Igor; Salvo, Ivano; Tronci, Enrico | ||||
| Title | Synthesizing Control Software from Boolean Relations | Type | Journal Article | ||
| Year | 2012 | Publication | International Journal on Advances in Software | Abbreviated Journal | Intern. Journal on Advances in SW |
| Volume | vol. 5, nr 3&4 | Issue | Pages | 212-223 | |
| Keywords | Control Software Synthesis; Embedded Systems; Model Checking | ||||
| Abstract | Many software as well digital hardware automatic
synthesis methods define the set of implementations meeting the given system specifications with a boolean relation K. In such a context a fundamental step in the software (hardware) synthesis process is finding effective solutions to the functional equation defined by K. This entails finding a (set of) boolean function(s) F (typically represented using OBDDs, Ordered Binary Decision Diagrams) such that: 1) for all x for which K is satisfiable, K(x, F(x)) = 1 holds; 2) the implementation of F is efficient with respect to given implementation parameters such as code size or execution time. While this problem has been widely studied in digital hardware synthesis, little has been done in a software synthesis context. Unfortunately, the approaches developed for hardware synthesis cannot be directly used in a software context. This motivates investigation of effective methods to solve the above problem when F has to be implemented with software. In this paper, we present an algorithm that, from an OBDD representation for K, generates a C code implementation for F that has the same size as the OBDD for F and a worst case execution time linear in nr, being n = |x| the number of input arguments for functions in F and r the number of functions in F. Moreover, a formal proof of the proposed algorithm correctness is also shown. Finally, we present experimental results showing effectiveness of the proposed algorithm. |
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| Publisher | IARIA | Place of Publication | Editor | Luigi Lavazza | |
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| ISSN | 1942-2628 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | yes | |||
| Call Number | Sapienza @ melatti @ | Serial | 108 | ||
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| Author |
Mari, Federico; Melatti, Igor; Salvo, Ivano; Tronci, Enrico | ||||
| Title | Linear Constraints and Guarded Predicates as a Modeling Language for Discrete Time Hybrid Systems | Type | Journal Article | ||
| Year | 2013 | Publication | International Journal on Advances in Software | Abbreviated Journal | Intern. Journal on Advances in SW |
| Volume | vol. 6, nr 1&2 | Issue | Pages | 155-169 | |
| Keywords | Model-based software design; Linear predicates; Hybrid systems | ||||
| Abstract | Model based design is particularly appealing in
software based control systems (e.g., embedded software) design, since in such a case system level specifications are much easier to define than the control software behavior itself. In turn, model based design of embedded systems requires modeling both continuous subsystems (typically, the plant) as well as discrete subsystems (the controller). This is typically done using hybrid systems. Mixed Integer Linear Programming (MILP) based abstraction techniques have been successfully applied to automatically synthesize correct-by-construction control software for discrete time linear hybrid systems, where plant dynamics is modeled as a linear predicate over state, input, and next state variables. Unfortunately, MILP solvers require such linear predicates to be conjunctions of linear constraints, which is not a natural way of modeling hybrid systems. In this paper we show that, under the hypothesis that each variable ranges over a bounded interval, any linear predicate built upon conjunction and disjunction of linear constraints can be automatically translated into an equivalent conjunctive predicate. Since variable bounds play a key role in this translation, our algorithm includes a procedure to compute all implicit variable bounds of the given linear predicate. Furthermore, we show that a particular form of linear predicates, namely guarded predicates, are a natural and powerful language to succinctly model discrete time linear hybrid systems dynamics. Finally, we experimentally show the feasibility of our approach on an important and challenging case study taken from the literature, namely the multi-input Buck DC-DC Converter. As an example, the guarded predicate that models (with 57 constraints) a 6-inputs Buck DC-DC Converter is translated in a conjunctive predicate (with 102 linear constraints) in about 40 minutes. |
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| Publisher | IARIA | Place of Publication | Editor | Luigi Lavazza | |
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| ISSN | 1942-2628 | ISBN | Medium | ||
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| Notes | Approved | yes | |||
| Call Number | Sapienza @ melatti @ | Serial | 115 | ||
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| Author |
Mari, Federico; Melatti, Igor; Salvo, Ivano; Tronci, Enrico | ||||
| Title | Undecidability of Quantized State Feedback Control for Discrete Time Linear Hybrid Systems | Type | Book Chapter | ||
| Year | 2012 | Publication | Theoretical Aspects of Computing – ICTAC 2012 | Abbreviated Journal | |
| Volume | Issue | Pages | 243-258 | ||
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| Publisher | Springer Berlin Heidelberg | Place of Publication | Editor | Roychoudhury, A.; D'Souza, M. | |
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| Series Editor | Series Title | Lecture Notes in Computer Science | Abbreviated Series Title | ||
| Series Volume | 7521 | Series Issue | Edition | ||
| ISSN | ISBN | 978-3-642-32942-5 | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | yes | |||
| Call Number | Sapienza @ mari @ Mari2012 | Serial | 99 | ||
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| Author |
Mari, Federico; Melatti, Igor; Salvo, Ivano; Tronci, Enrico | ||||
| Title | From Boolean Relations to Control Software | Type | Conference Article | ||
| Year | 2011 | Publication | Proceedings of ICSEA 2011, The Sixth International Conference on Software Engineering Advances | Abbreviated Journal | |
| Volume | Issue | Pages | 528-533 | ||
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| Abstract | Many software as well digital hardware automatic synthesis methods define the set of implementations meeting the given system specifications with a boolean relation K. In such a context a fundamental step in the software (hardware) synthesis process is finding effective solutions to the functional equation defined by K. This entails finding a (set of) boolean function(s) F (typically represented using OBDDs, Ordered Binary Decision Diagrams) such that: 1) for all x for which K is satisfiable, K(x, F(x)) = 1 holds; 2) the implementation of F is efficient with respect to given implementation parameters such as code size or execution time. While this problem has been widely studied in digital hardware synthesis, little has been done in a software synthesis context. Unfortunately the approaches developed for hardware synthesis cannot be directly used in a software context. This motivates investigation of effective methods to solve the above problem when F has to be implemented with software. In this paper we present an algorithm that, from an OBDD representation for K, generates a C code implementation for F that has the same size as the OBDD for F and a WCET (Worst Case Execution Time) linear in nr, being n = |x| the number of input arguments for functions in F and r the number of functions in F. | ||||
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| Publisher | ThinkMind | Place of Publication | Editor | ||
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| ISSN | 978-1-61208-165-6 | ISBN | Medium | ||
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| Notes | Best Paper Award | Approved | yes | ||
| Call Number | Sapienza @ mari @ icsea11 | Serial | 14 | ||
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| Author |
Mari, Federico; Melatti, Igor; Salvo, Ivano; Tronci, Enrico | ||||
| Title | Synthesis of Quantized Feedback Control Software for Discrete Time Linear Hybrid Systems | Type | Conference Article | ||
| Year | 2010 | Publication | Computer Aided Verification | Abbreviated Journal | |
| Volume | Issue | Pages | 180-195 | ||
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| Abstract | We present an algorithm that given a Discrete Time Linear Hybrid System returns a correct-by-construction software implementation K for a (near time optimal) robust quantized feedback controller for along with the set of states on which K is guaranteed to work correctly (controllable region). Furthermore, K has a Worst Case Execution Time linear in the number of bits of the quantization schema. | ||||
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| Publisher | Springer Berlin / Heidelberg | Place of Publication | Editor | Touili, T.; Cook, B.; Jackson, P. | |
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| Series Editor | Series Title | Lecture Notes in Computer Science | Abbreviated Series Title | ||
| Series Volume | 6174 | Series Issue | Edition | ||
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| Notes | Approved | yes | |||
| Call Number | Sapienza @ mari @ cav2010 | Serial | 16 | ||
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| Author |
Mari, Federico; Melatti, Igor; Salvo, Ivano; Tronci, Enrico | ||||
| Title | Linear Constraints as a Modeling Language for Discrete Time Hybrid Systems | Type | Conference Article | ||
| Year | 2012 | Publication | Proceedings of ICSEA 2012, The Seventh International Conference on Software Engineering Advances | Abbreviated Journal | |
| Volume | Issue | Pages | 664-671 | ||
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| Publisher | ThinkMind | Place of Publication | Editor | ||
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| Notes | Approved | yes | |||
| Call Number | Sapienza @ mari @ icsea12 | Serial | 98 | ||
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| Author |
Mari, Federico; Melatti, Igor; Salvo, Ivano; Tronci, Enrico | ||||
| Title | Model Based Synthesis of Control Software from System Level Formal Specifications | Type | Journal Article | ||
| Year | 2014 | Publication | ACM TRANSACTIONS ON SOFTWARE ENGINEERING AND METHODOLOGY | Abbreviated Journal | ACM TRANSACTIONS ON SOFTWARE ENGINEERING AND METHODOLOGY |
| Volume | 23 | Issue | 1 | Pages | Article 6 |
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| Publisher | ACM | Place of Publication | Editor | ||
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| ISSN | 1049-331X | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | Sapienza @ melatti @ | Serial | 110 | ||
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| Author |
Mari, Federico; Melatti, Igor; Salvo, Ivano; Tronci, Enrico | ||||
| Title | Quantized Feedback Control Software Synthesis from System Level Formal Specifications for Buck DC/DC Converters | Type | Report | ||
| Year | 2011 | Publication | Abbreviated Journal | ||
| Volume | abs/1105.5640 | Issue | Pages | ||
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| Abstract | Many Embedded Systems are indeed Software Based Control Systems (SBCSs), that is control systems whose controller consists of control software running on a microcontroller device. This motivates investigation on Formal Model Based Design approaches for automatic synthesis of SBCS control software. In previous works we presented an algorithm, along with a tool QKS implementing it, that from a formal model (as a Discrete Time Linear Hybrid System, DTLHS) of the controlled system (plant), implementation specifications (that is, number of bits in the Analog-to-Digital, AD, conversion) and System Level Formal Specifications (that is, safety and liveness requirements for the closed loop system) returns correct-by-construction control software that has a Worst Case Execution Time (WCET) linear in the number of AD bits and meets the given specifications. In this technical report we present full experimental results on using it to synthesize control software for two versions of buck DC-DC converters (single-input and multi-input), a widely used mixed-mode analog circuit. | ||||
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| Publisher | CoRR, Technical Report | Place of Publication | Editor | ||
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| Notes | Approved | yes | |||
| Call Number | Sapienza @ mari @ | Serial | 106 | ||
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