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Replacing target setting by value models in the ‘house of quality’ for value-based requirements specifications

Replacing target setting by value models in the ‘house of quality’ for value-based requirements specifications
Replacing target setting by value models in the ‘house of quality’ for value-based requirements specifications
Setting targets for engineering characteristics (ECs) is common practice in the ‘house of quality’ for establishing requirements specifications. However, if deployed arbitrarily, this practice is prone to errors and can often yield irrational results. Three potential methodological problems have been identified, regarding the setting of independent targets for each EC, setting fixed targets, and cascading down targets from the system level to the component level have been identified. In this paper, targets are categorized as constraints and goals because of their different implications for value trade-offs. Then, a ‘multi-attribute utility theory’ based approach is proposed, in which a system value model is developed in order to replace the setting of targets for system ECs and component value models are further derived to replace the setting of targets for component ECs. These value models enhance the traditional approach to requirements specification so that value-based requirements specifications can be developed. A case study is deployed to demonstrate the applicability of the approach in the civilian aerospace context for the development of requirements for commercial aircraft. The benefits of the proposed approach are twofold: a) value becomes an explicit construct, and b) value can be rationally modelled and simulated in the ‘house of quality’ in order to establish value-based requirements specifications. Furthermore, identified methodological problems in terms of setting EC targets at any level are mitigated.
2041-2975
2033-2044
Zhang, Xinwei
f09d71a3-02d8-46ac-bcec-d914689f91f9
Eres, Hakki
b22e2d66-55c4-46d2-8ec3-46317033de43
Baron, Claude
bc031b37-4bf1-45d8-826b-a3d939075242
Auriol, Guillaume
944d7384-e97e-41f4-97db-b3002868482c
Kossmann, Mario
11592d6b-11d9-497b-b368-8393f70e4805
Zhang, Xinwei
f09d71a3-02d8-46ac-bcec-d914689f91f9
Eres, Hakki
b22e2d66-55c4-46d2-8ec3-46317033de43
Baron, Claude
bc031b37-4bf1-45d8-826b-a3d939075242
Auriol, Guillaume
944d7384-e97e-41f4-97db-b3002868482c
Kossmann, Mario
11592d6b-11d9-497b-b368-8393f70e4805

Zhang, Xinwei, Eres, Hakki, Baron, Claude, Auriol, Guillaume and Kossmann, Mario (2014) Replacing target setting by value models in the ‘house of quality’ for value-based requirements specifications. Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 228 (11), 2033-2044. (doi:10.1177/0954405414540296).

Record type: Article

Abstract

Setting targets for engineering characteristics (ECs) is common practice in the ‘house of quality’ for establishing requirements specifications. However, if deployed arbitrarily, this practice is prone to errors and can often yield irrational results. Three potential methodological problems have been identified, regarding the setting of independent targets for each EC, setting fixed targets, and cascading down targets from the system level to the component level have been identified. In this paper, targets are categorized as constraints and goals because of their different implications for value trade-offs. Then, a ‘multi-attribute utility theory’ based approach is proposed, in which a system value model is developed in order to replace the setting of targets for system ECs and component value models are further derived to replace the setting of targets for component ECs. These value models enhance the traditional approach to requirements specification so that value-based requirements specifications can be developed. A case study is deployed to demonstrate the applicability of the approach in the civilian aerospace context for the development of requirements for commercial aircraft. The benefits of the proposed approach are twofold: a) value becomes an explicit construct, and b) value can be rationally modelled and simulated in the ‘house of quality’ in order to establish value-based requirements specifications. Furthermore, identified methodological problems in terms of setting EC targets at any level are mitigated.

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Submitted date: 12 February 2014
Accepted/In Press date: 30 May 2014
Published date: 21 July 2014
Organisations: Aeronautics, Astronautics & Comp. Eng

Identifiers

Local EPrints ID: 358235
URI: http://eprints.soton.ac.uk/id/eprint/358235
ISSN: 2041-2975
PURE UUID: 738d159d-70c6-47fa-840f-9a4d574035a9
ORCID for Hakki Eres: ORCID iD orcid.org/0000-0003-4967-0833

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Date deposited: 09 Oct 2013 13:11
Last modified: 18 Feb 2021 17:00

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Contributors

Author: Xinwei Zhang
Author: Hakki Eres ORCID iD
Author: Claude Baron
Author: Guillaume Auriol
Author: Mario Kossmann

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