Precision measurement by contact displacement sensors.

نویسندگان

چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Precision displacement measurement by active laser heterodyne interferometry.

We demonstrate an active laser heterodyne interferometer which can automatically compensate environmental disturbances and is capable of precision displacement measurement. Two Zeeman He-Ne lasers were employed. Laser II was used as the light source to stabilize the interferometer by using a piezomirror in a feedback loop. The hetereodyne signal of the two lasers was used to directly calibrate ...

متن کامل

Real-world quantum sensors: evaluating resources for precision measurement.

Quantum phenomena present in many experiments signify nonclassical behavior, but do not always imply superior performance. Quantifying the enhancement achieved from quantum behavior needs careful analysis of the resources involved. We analyze the case of parameter estimation using an optical interferometer, where increased precision can in principle be achieved using quantum probe states. Commo...

متن کامل

Precision Speed Measurement by Light

Driving Assistance Systems combine a variety of sensors with vehicle display, control and handling capabilities to improve driver performance and safety. As part of a project to evaluate new driving assistance systems using environmental sensors, engineers at Renault needed to measure the exact car speed in real time with better than 0.1 km/h accuracy. Common existing solutions are based on eit...

متن کامل

Estimating Measurement Precision by Means of Measurement Differences

When it is necessary to determine the precision of a certain instrument B, devoted to point position measurement for instance, but not necessarily, one way is to measure a certain number of points with B as well as with another instrument A, whose precision is known. Forming the differences between the B and A measurements, it is possible to calculate B precision by means of the dispersion of t...

متن کامل

Laser Doppler Displacement Measurement

Existing precision displacement-measuring devices are primarily based on linear encoders (optical or magnetic) or laser interferometers. Most encoders use grating scales and frequency counters, while most interferometers use stabilized lasers and fringe counters. In general, interferometers are more expensive and more accurate than linear encoders. However, there are large gaps in price and per...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Journal of the Robotics Society of Japan

سال: 1984

ISSN: 0289-1824,1884-7145

DOI: 10.7210/jrsj.2.472