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Encoder Interface for NSLS-II Beam Line Motion Scanning Applications
| Content Provider | Semantic Scholar |
|---|---|
| Author | Kadyrov, Ruslan Long, Joseph De Ha, Kiman So, Sung-Leung Stavitski, Eli |
| Copyright Year | 2015 |
| Abstract | The NSLS-II synchrotron started operations at BNL, USA. Whereas first beamlines welcome first users, the other beamlines are under design or construction. The variety of motion control applications on existing and future NSLS-II beamlines demand custom control electronics developed to meet specific needs and ease integration into existing systems. Thus an encoder interface was designed for a number of detection techniques that require a live position capture. It implements four identical individually isolated channels with encoder input capturing and output quadrature encoder interface generated. Encoder input handles an incremental quadrature encoder with a digital RS-422A interface and output frequencies up to 10 MHz. The logic, based on Xilinx Virtex-6 FPGA, processes signals from an encoder and associates it with the machine timestamp. Several filtering and compression techniques are also applied. The device then retranslates the interface signals for the motion controller, allowing the device to be installed between encoder and motion controller with no interference to the system. Captured data is streaming to the server using TCP/IP stack, with the server side running an EPICS IOC. The device status and control registers values are also available through EPICS channel access. All operator screens are developed with Control System Studio toolset. The design harmoniously complements the family of the NSLS-II equipment sharing same mechanical and electrical platform. This paper describes the functional design, configuration, operation and current status of the encoder interface design. |
| Starting Page | 881 |
| Ending Page | 884 |
| Page Count | 4 |
| File Format | PDF HTM / HTML |
| DOI | 10.18429/JACoW-ICALEPCS2015-WEPGF080 |
| Alternate Webpage(s) | http://accelconf.web.cern.ch/AccelConf/ICALEPCS2015/papers/wepgf080.pdf |
| Alternate Webpage(s) | http://icalepcs.synchrotron.org.au/papers/wepgf080.pdf |
| Alternate Webpage(s) | https://doi.org/10.18429/JACoW-ICALEPCS2015-WEPGF080 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
