{"id":1762,"date":"2025-04-26T14:59:32","date_gmt":"2025-04-26T12:59:32","guid":{"rendered":"https:\/\/autoconformance.com\/?p=1762"},"modified":"2025-04-26T17:14:35","modified_gmt":"2025-04-26T15:14:35","slug":"wie-koennen-parameter-im-v-modell-gehandhabt-werden","status":"publish","type":"post","link":"https:\/\/autoconformance.com\/en\/wie-koennen-parameter-im-v-modell-gehandhabt-werden\/","title":{"rendered":"How to handle parameters in the V-model?"},"content":{"rendered":"<p>[et_pb_section fb_built=\u201d1\u2033 admin_label=\u201dsection\u201d _builder_version=\u201d4.16\u2033 custom_padding=\u201d40px|||||\u201d da_disable_devices=&quot;off|off|off&quot; global_colors_info=&quot;{}&quot; da_is_popup=&quot;off&quot; da_exit_intent=&quot;off&quot; da_has_close=&quot;on&quot; da_alt_close=&quot;off&quot; da_dark_close=&quot;off&quot; da_not_modal=&quot;on&quot; da_is_singular=&quot;off&quot; da_with_loader=&quot;off&quot; da_has_shadow=&quot;on&quot;][et_pb_row admin_label=&quot;row&quot; _builder_version=&quot;4.16\u2033 background_size=&quot;initial&quot; background_position=&quot;top_left&quot; background_repeat=&quot;repeat&quot; custom_padding=&quot;3px||3px|||&quot; global_colors_info=\u201d{}\u201d][et_pb_column type=\u201d4_4\u2033 _builder_version=\u201d4.16\u2033 custom_padding=\u201d|||\u201d global_colors_info=&quot;{}&quot; custom_padding__hover=&quot;|||&quot;][et_pb_text admin_label=&quot;Text&quot; _builder_version=&quot;4.27.3\u2033 background_size=&quot;initial&quot; background_position=&quot;top_left&quot; background_repeat=&quot;repeat&quot; custom_padding=&quot;||0px|||&quot; global_colors_info=&quot;{}&quot;]<\/p>\n<h2>1. Introduction<\/h2>\n<p>Functional safety standards require the development of a safety-critical product to be done according to the V-model of system development. Fig. 1 shows this V-model in the form that underlies the autoConform\u00ae methodology and software.<\/p>\n<p>[\/et_pb_text][et_pb_image src=\u201chttps:\/\/autoconformance.com\/wp-content\/uploads\/2025\/04\/V-Modell.png\u201d title_text=\u201cV-Modell\u201d _builder_version=\u201c4.27.3\u2033 _module_preset=\u201cdefault\u201c global_colors_info=\u201d{}\u201d][\/et_pb_image][et_pb_text _builder_version=\u201d4.27.3\u2033 _module_preset=\u201ddefault\u201d global_colors_info=\u201d{}\u201d]<\/p>\n<p>Fig. 1: System development V-model of the autoConform\u00ae methodology and software<\/p>\n<p>&nbsp;<\/p>\n<p>Parameters are typically included in all documents of the V-model, on the left and right sides of the V, and on all product architecture levels. Parameters are not limited to software parameters in the form of either software configuration data or software calibration data. Configuration and calibration parameters are also present at the system and hardware levels.<\/p>\n<p>The correct handling of all system, hardware and software parameters is a prerequisite for the correct management of product variants.<\/p>\n<p>Section 2 makes a proposal as to how parameters can be handled advantageously in the V-model documents. Section 3 explains the benefits of this proposal.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h2>2. Handling of parameters in the V-Modell documents<\/h2>\n<p>[\/et_pb_text][et_pb_text _builder_version=\u201c4.27.3\u2033 _module_preset=\u201cdefault\u201c global_colors_info=\u201c{}\u201c]<\/p>\n<p>The proposal for handling parameters in the V-Model documents consists of four sub-proposals, subsequently referred to as (A), (B), (C) and (D).<\/p>\n<p>(A) It is proposed that all parameters be specified in a central parameter document. Instead of one parameter document, two parameter documents can be created, one for system and hardware parameters and the other for software parameters.<\/p>\n<p>Such parameter documents are identical in structure to interface documents in which generalized signals are specified: Parameter and interface documents each consist of only one document sheet which contains all parameter or signal attributes. The attributes which characterize a parameter are nearly the same as the attributes which characterize a signal.<\/p>\n<p>(B) It is proposed that all parameter names be chosen in such a way that it is obvious from the name that it is a parameter name. One way to accomplish this is to let each parameter name start with a string that is used exclusively in parameter names.<\/p>\n<p>Examples:<\/p>\n<ul>\n<li>\u201cPARAM_\u201d or<\/li>\n<li>\u201cPAR_\u201d or<\/li>\n<li>\u201cP__\u201d.<\/li>\n<\/ul>\n<p>(C) All attribute values (such as the default value of a parameter) are specified in the central parameter document according to (A). To make the rest of the documents in which a specific parameter occurs more readable, it is proposed that the default value of the parameter is specified in parentheses after the parameter name.<\/p>\n<p>Example:<\/p>\n<p>PAR_Spring1Stiffness_Npm(4.7N\/m)<\/p>\n<p>Note: If the parameter name already contains the unit of the parameter value, then the unit information does not have to be repeated in parentheses after the parameter name.<\/p>\n<p>&nbsp;<\/p>\n<p>If further parameter attribute values are required for the readability of a text passage, it is suggested to extend the information provided in parentheses after the parameter name such that all required parameter attribute names followed by the corresponding parameter attribute value are listed in the parentheses after the parameter name: (Parameterattribut_#1 name: Parameterattribut_#1 value, Parameterattribut_#2 name: Parameterattribut_#2 value, ...).<\/p>\n<p>Example:<\/p>\n<p>PAR_Spring1Stiffness_Npm(DEFAULT: 4.7N\/m, MINIMUM: 4.4N\/m, MAXIMUM: 5.0N\/m).<\/p>\n<p>(D) Finally, it is proposed that every numerical value which is referred to in more than one V-model document does not appear as \"naked\" number, but as a parameter in every V-model document.<\/p>\n<p>Example: Instead of entering \"500ms\" as the Fault Tolerant Time Interval (FTTI) for the safety goal #1 (SG1) in the HARA and other documents, \"PAR_FTTI_SG1_ms(500ms)\" or \"PAR_FTTI_SG1_ms(500)\" is entered instead.<\/p>\n<p>[\/et_pb_text][et_pb_text admin_label=\u201dText\u201d _builder_version=\u201d4.27.3\u2033 background_size=\u201dinitial\u201d background_position=\u201dtop_left\u201d background_repeat=\u201drepeat\u201d custom_padding=\u201d0px||0px|||\u201d global_colors_info=&quot;{}&quot;]<\/p>\n<h2>3. Benefits of the Parameter Handling Proposal<\/h2>\n<p>Proposal (A), the specification of each parameter in a central parameter document, ensures that the parameter names are unique and consistent across all V-model documents.<\/p>\n<p>Suggestions (B), (C) and (D) ensure that all numerical values that occur repeatedly in the V-model documents can be updated automatically, which in turn is a practical prerequisite for keeping all parameter values consistent and correct.<\/p>\n<ol><\/ol>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>","protected":false},"excerpt":{"rendered":"<p>Configuration and calibration parameters exist not only in the software, but also at all system and hardware levels. We recommend identifying all parameters as such by their parameter names and specifying them in one or a few central parameter documents. Learn more about how you can use these and other measures to ensure consistent and correct parameterization throughout your product development project.<\/p>","protected":false},"author":2,"featured_media":964,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"<!-- wp:paragraph -->\r\n<p>Willkommen bei WordPress. Dies ist dein erster Beitrag. Bearbeite oder l\u00f6sche ihn und beginne mit dem Schreiben!<\/p>\r\n<!-- \/wp:paragraph -->","_et_gb_content_width":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-1762","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-allgemein"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Kenntlichmachung und Spezifikation von Parametern im V-Modell<\/title>\n<meta name=\"description\" content=\"Konfigurations- und Kalibrationsparameter gibt es nicht nur in der Software, sondern auch auf allen System- und Hardware-Ebenen. 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