LMS Test.Lab扭振分析用于对旋转机械的单轴或多轴进行高精度扭振分析。能够得到固定采样的扭振频谱分析结果及阶次切片，也能够通过转速同步采样，精确地得到无能量泄漏的阶次分析结果。采用具有创新性的QTV模块，能够同时对8个轴进行实时或离线的扭振分析。QTV是专门为扭振测试设计的信号调理模块，其强大的扭振信号测试功能，能够在线将转速脉冲信号直接转换为精确的高带宽角速度或角位移时间历程数据。扭振分析软件支持LMS SCADAS数采前端的各种信号输入。
采用LMS Test.Lab扭振分析，用户能够同时获取扭振数据、窄带谱、转速同步采样阶次谱等各种分析结果，支持跟踪多轴转速通道，完成升速、降速、升速/降速循坏等各种工况的测试。利用导出通道，可以实时在线计算、显示、监测扭振角位移、扭振角速度、扭振角加速度、皮带传递率等各种指标。系统具有脉冲修正功能，包括对存在缺齿、双脉冲、脉冲间隔不均匀等现象的脉冲信号进行修正。测试结果的表征可以在RMS(有效值)和Peak(峰值)之间转换，以方便与其他数据之间进行对比。
借助虚拟通道计算器和时间信号计算器，可对各个测试通道进行基本的或高级的数学操作和运算，生成虚拟扩展通道，或对采集的数据进行无相位差的滤波处理。这些对原始时间历程数据的处理能够在测试过程中在线完成，或者在测试完成后自动进行，处理得到的数据将与测试通道的数据存储在同一个TDF文件中，并能够将各组不同的测试数据组织起来，进行批处理。
Reinforcing its commitment to make quality, fuel-efficient, safe and technologically advanced vehicles, the Ford Motor Company has radically improved vehicle quality and is working hard to rank number one in quality performance. This turnaround strategy hinges on focused efforts throughout the Ford organization, including the FEAD group where LMS Test.Lab helps double the number of torsional and other vibroacoustic tests to ensure high quality standards on all the automaker’s US front-end accessory drive designs.
Business is booming at Moventas, a leading tier-one supplier of gearboxes for wind turbines. Company sales increased 40% last year, reflecting tremendous growth of this alternative resource in the face of sky-high energy prices. According to the World Wind Energy Association, global installed wind turbine capacity has grown ten-fold in the last ten years and has increased 25% just in the past year. Predictions from the association indicate that the 74 gigawatts of current worldwide wind-powered electrical generation will more than double by 2010, when levels are expected to reach 160 gigawatts.
Noise and vibration performance plays an important role in the development of rotating components, such as engines, drivelines, transmission systems, compressors and pumps. The presence of torsional vibrations and other specific phenomena require the dynamic behavior of systems and components to be assessed accurately in order to avoid comfort and durability related problems. The innovative LMS QTV (Quad Torsional Vibration) modules allow engineers to analyze the torsional vibrations of transmission-related systems and components in context of other synchronously processed noise and vibration performance characteristics. 
