1 / 19

Motion Control in LCLS

Motion Control in LCLS. Sheng Peng EPICS Meeting 2008, Shanghai. Applications. Motion control is everywhere Drive Laser Laser Heater Wire Scanner Collimator … Beam line is all about motors. Requirement could be very different. Applications Optical table motion control

delora
Télécharger la présentation

Motion Control in LCLS

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Motion Control in LCLS Sheng Peng EPICS Meeting 2008, Shanghai

  2. Applications • Motion control is everywhere • Drive Laser • Laser Heater • Wire Scanner • Collimator • … • Beam line is all about motors

  3. Requirement could be very different • Applications • Optical table motion control • In vacuum motion control • NEMA standard motors • Heavy duty motion • Multi-Axis coordination • Pneumatic • Motors • DC servo • Brush/Brushless • Stepper • 4 phase/5 phase • Half step • Micro stepping

  4. Requirement could be very different • Read back • None for stepper motor • LVDT • AC output • DC output • Encoder • Optical encoder • Magnetic encoder • Resolver • Pots

  5. Requirement could be very different • Travel Limits • Soft Limit • Limit Switch • Brake • Proximity • …

  6. Different vendor has different specialty • Different application leads to different solution

  7. Newport is used for Laser Optical Motion • Newport XPS-C8 is used in LCLS for all optical control • Pros • Ethernet based • 8 channels per controller • Auto-recognize Newport motors • Encoder built-in • Driver XPS-DRV01: 3 Amps, 48V • Cons • Fairly expensive • Motor choices are a little limited • They don’t understand vxWorks like us

  8. Newport XPS

  9. Most of Newport Stages/Actuators are compatible

  10. Stability feedback loop

  11. Wire Scanner • Needs to read position with very short latency • NEMA standard size motor is desired • Long cable run is required • LVDT is desired

  12. HYTEC 8601 Stepper Motor Controller • Industry Pack format • 4 Channel (axis) • 32-bit Step Registers • for steps in next movement • 32-bit Absolute Position Up/Down Counter • records movement • 16-bit Start/Stop Speed Register • Set the speed at which a movement will start, steps per second • 16-bit Travel Speed Register • Sets the speed at which the motor will run after accelerating, steps per second • 16-bit Ramp Rate Register • Sets the rate at which speed will increase/decrease during ramp • 16-bit Control/Status • Status of drive, controller, limit switches • 16-bit Interrupt Mask Register

  13. HYTEC SMDS-4 Motor Drive System • Step rate: 1- 65,535 sptes per second • Ramp Rate: 64 – 50,000 steps per second • Various versions: • 4 phase • 5 phase • … SMDS 4-axis power driver SMDS Plug-in driver card

  14. Highland Technologies LVDT Scanner • 8 channel VME module • 16-bit resolution with programmable noise filtering

  15. Current Status

  16. Wire Scanners

  17. System Integration • EPICS gives pretty good system level integration capability • Motor record gives uniform user interface which is very important for operator • A full turn key system especially for beam line will be highly desired

  18. Smart Motor • Animatics Servo • ~25 models plus customized • 17NEMA size to 42NEMA • Control thru RS232 • Works with EPICS • IMS MDrivePlus Stepper • ~20 models • 14NEMA to 42NEMA • RS232 control interface • Digi PortServer TS16

More Related