Precision Machine Dynamics and Environmental Vibration

Pre-sliding Friction Dynamics in High Precision Machine Slides

High precision applications, such as, semiconductor manufacturing and diamond turning of optical elements require positioning accuracy within nanometers and therefore require very precise motion control of machine tool axes. The frictional behavior at the slides is a result of very complex interaction between the contacting surfaces and lubricants. No accurate quantitative prediction of the fri...

Vibration Isolation of Precision Objects

The need for vibration isolation of precision and vibrationsensitive objects is increasing continuously. Vibration isolation systems must comply with contradictory specifications, such as requiring reduced stiffness of isolators for better isolation, but higher stiffness for better performance of the object. Recently, expensive active isolation systems have been used to resolve these contradict...

Workshop on High Precision Positioning and Vibration Control

This talk considers optimal design of frame structures for vibration suppression. The H-infinity norm of the transfer function from disturbance sources to the displacement outputs, which we want to suppress, is adopted as the objective function to represent the magnitude of vibration transfer. The design parameters are the cross-sectional areas of frame members. For minimization of the H1 norm ...

Precision and Recall of Machine Translation

Challenges in precision and vibration control for physics experiments

The present paper examines some of the ongoing development projects for new facilities for astronomy, high-energy particle physics and gravitational wave detection, from the viewpoint of precision and vibration control requirements.