Ambiguities and Deviations in Qualitative Circuit Analysis

Mark Lee; Jonathan Bell; George Coghill

Ambiguities and Deviations in Qualitative Circuit Analysis

Mark Lee, Jonathan Bell, George Coghill

Department of Computer Science

Research output: Chapter in Book/Report/Conference proceeding › Conference Proceeding (Non-Journal item)

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Abstract

Qualitative electrical circuit models have now been developed by the QR community to the extent that they can be found in commercial software products. Our own work, including this paper, deals with steady-state models applied to design analysis tasks in automotive electrical systems. Our previous method using three valued resistance networks has been very successful in certain applications, particularly those that address the effects of structural circuit changes. More recently we have introduced a many-valued model that allows the effects of value changes to be analysed. In this paper we describe two innovations: a method for the resolution of flow directions and a new treatment of deviations. Both of these are based on a many-valued resistance model with an order-of-magnitude relation. The first technique generalises previous methods and the second offers a new functionality for such models.

Original language	English
Title of host publication	Proceedings of the 15th International Workshop on Qualitative Reasoning
Pages	51-58
Number of pages	8
Publication status	Published - May 2001
Event	15th International Workshop on Qualitative Reasoning - San Antonio, United States of America Duration: 17 May 2001 → 19 May 2001

Conference

Conference	15th International Workshop on Qualitative Reasoning
Country/Territory	United States of America
City	San Antonio
Period	17 May 2001 → 19 May 2001

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@inproceedings{e2d20a66b4a54d858dce9ceaf4efbd84,

title = "Ambiguities and Deviations in Qualitative Circuit Analysis",

abstract = "Qualitative electrical circuit models have now been developed by the QR community to the extent that they can be found in commercial software products. Our own work, including this paper, deals with steady-state models applied to design analysis tasks in automotive electrical systems. Our previous method using three valued resistance networks has been very successful in certain applications, particularly those that address the effects of structural circuit changes. More recently we have introduced a many-valued model that allows the effects of value changes to be analysed. In this paper we describe two innovations: a method for the resolution of flow directions and a new treatment of deviations. Both of these are based on a many-valued resistance model with an order-of-magnitude relation. The first technique generalises previous methods and the second offers a new functionality for such models.",

author = "Mark Lee and Jonathan Bell and George Coghill",

note = "Lee M.H., Bell J. and Coghill G.M., Ambiguities and Deviations in Qualitative Circuit Analysis, in Proc. QR{\textquoteright}2001, 15th Int. Workshop on Qualitative Reasoning, San Antonio, Texas, May 2001, pp51-58.; 15th International Workshop on Qualitative Reasoning ; Conference date: 17-05-2001 Through 19-05-2001",

year = "2001",

month = may,

language = "English",

pages = "51--58",

booktitle = "Proceedings of the 15th International Workshop on Qualitative Reasoning",

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T1 - Ambiguities and Deviations in Qualitative Circuit Analysis

AU - Lee, Mark

AU - Bell, Jonathan

AU - Coghill, George

N1 - Lee M.H., Bell J. and Coghill G.M., Ambiguities and Deviations in Qualitative Circuit Analysis, in Proc. QR’2001, 15th Int. Workshop on Qualitative Reasoning, San Antonio, Texas, May 2001, pp51-58.

PY - 2001/5

Y1 - 2001/5

N2 - Qualitative electrical circuit models have now been developed by the QR community to the extent that they can be found in commercial software products. Our own work, including this paper, deals with steady-state models applied to design analysis tasks in automotive electrical systems. Our previous method using three valued resistance networks has been very successful in certain applications, particularly those that address the effects of structural circuit changes. More recently we have introduced a many-valued model that allows the effects of value changes to be analysed. In this paper we describe two innovations: a method for the resolution of flow directions and a new treatment of deviations. Both of these are based on a many-valued resistance model with an order-of-magnitude relation. The first technique generalises previous methods and the second offers a new functionality for such models.

AB - Qualitative electrical circuit models have now been developed by the QR community to the extent that they can be found in commercial software products. Our own work, including this paper, deals with steady-state models applied to design analysis tasks in automotive electrical systems. Our previous method using three valued resistance networks has been very successful in certain applications, particularly those that address the effects of structural circuit changes. More recently we have introduced a many-valued model that allows the effects of value changes to be analysed. In this paper we describe two innovations: a method for the resolution of flow directions and a new treatment of deviations. Both of these are based on a many-valued resistance model with an order-of-magnitude relation. The first technique generalises previous methods and the second offers a new functionality for such models.

M3 - Conference Proceeding (Non-Journal item)

SP - 51

EP - 58

BT - Proceedings of the 15th International Workshop on Qualitative Reasoning

T2 - 15th International Workshop on Qualitative Reasoning

Y2 - 17 May 2001 through 19 May 2001

ER -

Ambiguities and Deviations in Qualitative Circuit Analysis

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