Digital signal processor control of scanned probe microscopes

Hardware for digitally controlled scanned probe microscopes

The design and implementation of a flexible and modular digital control and data acquisition system for scanned probe microscopes ( SPMs) is presented. The measured performance of the system shows it to be capable of 1Cbit data acquisition at a lOO-kHz rate and a full l&bit output resolution resulting in less than 0.02-A rms position noise while maintaining a scan range in excess of 1 pm in bot...

Digital Signal Processor Trends

During the past decade digital signal processors (DSPs) have hit critical mass for high-volume applications (Figure 1). Today, the entire digital wireless industry operates with DSP-enabled handsets and base stations. The mass-storage industry depends on DSPs to produce hard-disk drives and digital versatile disc players. Ever-increasing numbers of digital subscriber line and cable modems, line...

PMSM Control System Based on Digital Signal Processor

For the high power density of PMSM, designed the corresponding drive controller to improve the servo efficiency of PMSM servo system. According to the theory of math model of PMSM under the dq coordinate system, applied id = 0 vector control method as a PMSM control strategy, established PMSM controller model based on vector control. Taking DSP TMS320F2812 as controller core, built a power-driv...

Simple retrofittable long-range x-y translation system for scanned probe microscopes

Remote control and visualization of scanning probe microscopes via Web

Current e orts in bringing instruments on-line via the World Wide Web (WWW) have done much to enhance distance learning and research. We have achieved success in bringing the Scanning Probe Microscope (SPM) data live on the Web. This work is being pursued under the aegis of the IN-VSEE project. The project is targeted at bringing SPM data live to community colleges, high school and other resear...