Motion Control in LCLS
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Sheng Peng Motion Control in LCLS [email protected] .edu 3/12/2008 1 Motion Control in LCLS Sheng Peng EPICS Meeting 2008, Shanghai
description
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 - PowerPoint PPT Presentation
Transcript of Motion Control in LCLS
Sheng Peng
Motion Control in LCLS [email protected]
3/12/20081
Motion Control in LCLS
Sheng Peng
EPICS Meeting 2008, Shanghai
Sheng Peng
Motion Control in LCLS [email protected]
3/12/20082
Applications
Motion control is everywhereDrive Laser
Laser Heater
Wire Scanner
Collimator
…
Beam line is all about motors
Sheng Peng
Motion Control in LCLS [email protected]
3/12/20083
Requirement could be very different
ApplicationsOptical table motion controlIn vacuum motion controlNEMA standard motorsHeavy duty motionMulti-Axis coordinationPneumatic
MotorsDC servo
Brush/BrushlessStepper
4 phase/5 phaseHalf stepMicro stepping
Sheng Peng
Motion Control in LCLS [email protected]
3/12/20084
Requirement could be very different
Read backNone for stepper motorLVDT
AC outputDC output
EncoderOptical encoderMagnetic encoder
ResolverPots
Sheng Peng
Motion Control in LCLS [email protected]
3/12/20085
Requirement could be very different
Travel LimitsSoft Limit
Limit Switch
Brake
Proximity
…
Sheng Peng
Motion Control in LCLS [email protected]
3/12/20086
Different vendor has different specialty
Different application leads to different solution
Sheng Peng
Motion Control in LCLS [email protected]
3/12/20087
Newport XPS-C8 is used in LCLS for all optical controlPros
Ethernet based8 channels per controllerAuto-recognize Newport motorsEncoder built-inDriver XPS-DRV01: 3 Amps, 48V
ConsFairly expensiveMotor choices are a little limitedThey don’t understand vxWorks like us
Newport is used for Laser Optical Motion
Sheng Peng
Motion Control in LCLS [email protected]
3/12/20089
Most of Newport Stages/Actuators are compatible
Sheng Peng
Motion Control in LCLS [email protected]
3/12/200812
Wire Scanner
Needs to read position with very short latency
NEMA standard size motor is desired
Long cable run is required
LVDT is desired
Sheng Peng
Motion Control in LCLS [email protected]
3/12/200813
HYTEC 8601 Stepper Motor Controller
Industry Pack format4 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 RegisterSet the speed at which a movement will start, steps per second
16-bit Travel Speed RegisterSets the speed at which the motor will run after accelerating, steps per second
16-bit Ramp Rate RegisterSets the rate at which speed will increase/decrease during ramp
16-bit Control/StatusStatus of drive, controller, limit switches
16-bit Interrupt Mask Register
Sheng Peng
Motion Control in LCLS [email protected]
3/12/200814
HYTEC SMDS-4 Motor Drive System
SMDS Plug-in driver card
SMDS 4-axis power driver
Step rate: 1- 65,535 sptes per secondRamp Rate: 64 – 50,000 steps per secondVarious versions:
4 phase5 phase…
Sheng Peng
Motion Control in LCLS [email protected]
3/12/200815
Highland Technologies LVDT Scanner
8 channel VME module 16-bit resolution with programmable noise filtering
Sheng Peng
Motion Control in LCLS [email protected]
3/12/200818
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
Sheng Peng
Motion Control in LCLS [email protected]
3/12/200819
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
