标准摘要
[中文适用范围]： 该 IR 定义了最常见夹具设计的一般分类法（分类）。该 IR 提供了设计、制造和安装指南，以改进测试重复、再现和与车辆状况相关的方式。本 IR 中不同类型的夹具（包括其预载）适用于单端制动惯性测功机 NVH 测试，频率范围在 1.25 kHz 至 16 kHz 之间（根据 SAE J2521）。本IR适用于车辆总重等级为4536公斤或以下的乘用车和轻型卡车。本 IR 不涉及其他可变性来源，例如 (a) 测试程序本身、(b) 环境条件、(c) 测功机设计，包括 NVH 测试室、(d) 数据收集和数据分析方法，以及 (e)制动和悬架硬件的零件与零件、批次与批次以及设计水平的变化。 [外文原描述]： This IR defines a general taxonomy (classification) of the most common fixture designs. This IR provides guidelines for design, fabrication, and installation to improve the way tests repeat, reproduce, and correlate to vehicle conditions. The different types of fixtures in this IR (including their preloading) apply to single-ended brake inertia dynamometer NVH testing, with a frequency range between 1.25 kHz and 16 kHz (per SAE J2521). This IR applies to passenger car and light trucks with a gross vehicle weight rating of 4536 kg or below. This IR does not address other sources of variability such as (a) test procedure itself, (b) environmental conditions, (c) dynamometer design, including its NVH test chamber, (d) data collection and data analysis methods, and (e) part-to-part, batch-to-batch, and design-level variation for brake and suspension hardware.Cross Reference:
英文名称Taxonomy and Guidelines for Design, Fabrication, and Installation of Brake NVH Fixtures for Inertia Dynamometer Testing