Nanowerk

High-performance linear stage with absolute encoder and precision guiding

The advanced stage design provides for excellent straightness and flatness values as low as 1µm. Crossed roller bearings ...
Popular Mechanics

Engineers Found Evidence of Hydraulics in an Ancient Pyramid, Solving a 4,500-Year-Old Mystery

A study suggests that the first of seven key pyramids in Egypt, the Step Pyramid of Djoser, was built using a hydraulic lift. Dated to about 4,500 years ago, this would move up the introduction of ...
IEEE

Adaptation and performance of well-known non-linear inverse solvers in optical microscopy

Abstract: We have adapted several nonlinear inverse scattering algorithms to reconstruct the three-dimensional profile of the refractive index of the sample given the camera images obtained from a ...
IEEE

Initial Position Detection and Polarity Identification for IPMSMs Using a Linear Time-Invariant Enhanced Phase-Locked Loop in HFSI

Abstract: This article proposes an improved position sensorless control method for interior permanent magnet synchronous motors (IPMSMs) using high-frequency square-wave injection (HFSI). Conventional ...