It takes considerable time and effort to manufacture “perfect” surfaces. The mirrors on NASA’s James Webb Space Telescope, with a surface area of about 25 m 2 and finished to accuracies of 25 nm, took ...

Direct drives place rigorous demands on position-signal quality. Optimum measuring signals increase the quality of the machined workpiece surface, reduce vibration in the machine frame, stop excessive ...

For the first time ever high-resolution sine-to-digital converter iC-NQC provides the microelectronics industry with a BiSS C slave protocol that enables bidirectional data exchange at the same time ...

A high-accuracy 20-bit resolution quasi-absolute encoder with DSP-based signal processing is housed in a dc stepper motor assembly, as shown in Fig. 1. Able to operate in a temperature range between ...

Optical encoders have been used to measure position, speed, acceleration and motion direction for decades, but now they are finding new applications where high performance and miniaturization are ...

From pan-tilt-zoom cameras to the most highly sophisticated mini robots on the market, a wide array of today’s technologies incorporate some form of motion control system. At the heart of these ...