什么是多轴仿真表(MAST)测试及其在汽车领域的应用?

多轴模拟台试验(有时也称为多轴模拟试验或多轴激振台试验)使用装有伺服液压致动器的平台使部件或组件受到振动, 摇晃, 倾斜, and similar forces. 通常, 执行此测试是为了了解汽车组件或子系统在现实世界中如何响应这些力. 在MAST测试期间，施加在车辆或部件上的力不是随机的, 可以对表进行难以置信的精确编程，以在测试所需的特定模式中移动. For vehicle components, 程序集, and sub-systems, 类型, 频率, 强度, 表所施加的力的持续时间是基于从 road load data acquisition (RLDA)这是一个在试验场测试车辆对道路输入的反应的过程.

Depending on what data the customer requires, 汽车桅杆测试可以与试验场测试一起或代替试验场测试进行. 使用MAST测试来收集有关车辆部件的数据有许多优点, 在汽车im体育平台app下载中有很多情况下，MAST测试比在试验场测试更可取.

How does a multi-axis simulation table work?

A multi-axis simulation table (MAST) is a flat, rigid surface connected to multiple servo-hydraulic actuators. In im体育APP’s case, for vehicle component testing, 我们通常使用5到6个执行器，它们单独移动以提供5到6个自由度, including lateral, longitudinal and vertical translation as well as pitch, roll and yaw rotations, based on inputs provided by a computer program.

The MAST relies on a programmed drive file, or actuator input. 客户可以提供一个预先设计好的驱动器文件作为他们的测试标准, but in many cases, road response data is collected from vehicles driving on road surfaces, using an array of vehicle-mounted sensors. The raw response data is analyzed and edited, and key data from the proving ground test is used to create the drive file. A drive file, 本质上, 告诉MAST输入执行器如何移动，以精确地再现试验场测试的力. Drive file development is an iterative process that relies on accurate data, specialized computer programs, and the expertise of testing professionals to give accurate, 有关, and repeatable results.

专家对数据进行编辑，只保留损坏事件，然后使用这些数据创建一个驱动器文件. 他们对其进行了多次测试，以确保MAST产生正确的力，并准确地再现损伤和疲劳. Once the drive file is created and validated, 车辆部件可以连接到MAST表面，并使用相同的输入序列进行多次测试.

What are the advantages of automotive MAST testing?

MAST testing does not fully replace proving ground testing, but when it comes to testing components, 程序集, and sub-systems in particular, it is faster, more cost-effective, and more precise than repeating proving ground tests on an assembled vehicle. It allows components to be tested and evaluated individually, rather than testing an entire vehicle, 它允许测试专业人员隔离变量并比在试验场更精确地诊断组件中的问题或问题. MAST可以一遍又一遍地重复完全相同的一系列动作，这对于赛道上的驾驶员来说是不可能的, 比较同一部件的多种不同设计的性能或隔离故障原因的可靠方法是什么.

MAST testing also reduces overall testing time, which reduces time to market. 一遍又一遍地从试验场测试中选择并重复最具破坏性的力, MAST测试可以在短至几周的时间内复制组件的寿命磨损情况, reducing the testing time for an individual component significantly. 另外, when components are small, multiple components can be affixed to a single MAST, allowing them to be tested simultaneously.

MAST测试可以在短至几周的时间内复制部件的寿命磨损情况, significantly reducing the testing time for an individual component.”

What are the limitations of automotive MAST testing?

MAST testing relies on RLDA data from a proving ground to be successful, 因此，有效的测试在很大程度上依赖于高质量的数据收集和解释. 所涉及的测试专业人员的专业知识可能是影响数据可靠性的重要因素, 由于编辑原始数据和创建驱动器文件是手动过程，需要第一手经验和广泛的测试知识.

A physical limitation of MAST testing is the rigid table surface, which does not allow for twisting or bending, which may be a necessary part of testing for certain components. 组件或组件的尺寸和重量也很重要. MASTs come in a range of sizes and weight limits; some can accommodate an entire vehicle while others have a surface only a foot across; some actuators have a force 能力 of 500 lbs., while others have a 77,000 lb. 能力. When you evaluate a prospective testing partner, 重要的是要了解您的要求范围，并评估测试实验室的设备是否能够满足这些需求.

如果您对如何执行MAST测试或im体育APP的MAST测试如何使您的组织受益有疑问, please reach out to speak with one of our experts. With a long history of automotive industry testing experience and a global family of laboratories, we have the 能力, 知识, and equipment to help you reach your goals.