pradeep writes:
The two ac servo motors (2.75 kw and 7.5kw) need to run in synchronous way (at specified programmable ratio of speeds) at the accuracy of 8,00,000 pulses per rev. Do you know of any products? Thanks.
There are a variety of options for synchronizing two motors. The most common is using a motion controller from a motion control company, such as; Beckoff, Bosch/Indramat, Compumotor, Elau, Rockwell or Siemens to name a few.
The tricky portion of your question is having 8,000,000 pulses per revolution (PPR). I know a few motion control companies that have 2,000,000 and 4,000,000 PPR feedbacks and most of these are proprietary to that specific motion control company.
If you are more specific about your particular application, I might be able to lead you in the right direction but for a rough guideline, I would suggest:
For Packaging applications - ELAU
For Printing/Converting - Bosch/Indramat or Siemens
For General Applications - Bosch/Indramat or Rockwell
All of these companies have products that can synchronize two, four, eight or more axes of motion.
I hope this helps!