Motion Control Technology

   Lynton Manufacturing Service

 The X-Y axis table and 3 axis amplifier were built as a test rig to develop and test  the
 L.M.S motion  Control system.   
  On this test table Two US Digital Encoders  were fitted to the same axis. Either can be used to provide positional
 feedback  data to the Control System.  A rotary encoder is shown fitted to the  rear of  the motor/tachometer unit, and
 the other is a linear strip  encoder fitted to the slide.
  The control shows that positional stability is maintained at  +/- 1 encoder pulse  ( with these encoders +/-0.01mm)
  whichever encoder is used. However when the slide position was checked with a dial indicator only the linear encoder
 was  capable a maintaining the true position. Even when balls were removed from the ballscrew nut, in order to create
 excessive backlash, the system was still capable of maintaining accurate position using the linear encoder.

The 3 axis amplifier was built as a universal test amp.
The drive cards will operate on  Bus Voltages
between 24v and 180v  and have a  15amps
continuous current rating. (25amp peak). It has been
 used in my home workshop to power the test table
 above with 24volt battery operated motors and in
 The machine shop where we tested a Bridgeport
 Size milling machine.   

Linear strip encoder from US Digital
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Enlarge picture

Rotary encoder from US Digital
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