公开(公告)号：US07324213B2

公开(公告)日：2008-01-29

申请号：US11010055

申请日：2004-12-10

申请人： Ronald D. Hartman ,  Douglas A. Chamberlin ,  Kim R. Heinicka ,  John Koss ,  Bryan Williams ,  Brandon Noska

发明人： Ronald D. Hartman ,  Douglas A. Chamberlin ,  Kim R. Heinicka ,  John Koss ,  Bryan Williams ,  Brandon Noska

IPC分类号： G01B11/02

CPC分类号： G01H9/004 ,  G01C25/005

摘要： A system to determine unwanted noise produced by simulation equipment. In one embodiment, an angular rotation noise measuring system comprises a stable body, a laser, at least one interferometer and at least one mirror. The laser is adapted to generate a primary laser beam and is mounted to the stable body. The at least one interferometer is adapted to split the primary laser beam into two or more out of phase secondary laser beams. Moreover, the interferometer is coupled to the stable body. The at least one mirror is coupled to a fixture on a vibration generating device. The fixture is adapted to hold a device under test. Each mirror is adapted to reflect an associated secondary laser beam back to the interferometer such that an interference pattern is formed with the secondary laser beams. Changes to the interference pattern determine the angular rotation noise caused by the vibration generating device.

摘要翻译： 用于确定仿真设备产生的不必要噪声的系统。 在一个实施例中，角度旋转噪声测量系统包括稳定体，激光器，至少一个干涉仪和至少一个反射镜。 激光器适于产生主激光束并安装在稳定体上。 所述至少一个干涉仪适于将所述主激光束分成两个或更多个异相次级激光束。 此外，干涉仪耦合到稳定体。 所述至少一个反射镜联接到振动产生装置上的固定装置。 该固定装置适于容纳待测设备。 每个反射镜适于将相关联的次级激光束反射回干涉仪，使得与次级激光束形成干涉图案。 对干涉图案的改变决定了振动产生装置引起的角旋转噪声。