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Encoders and
Resolvers Series:
The Benefits to Closed
Loop Motion Feedback
Before We Start
 This webinar will be available afterwards at
designworldonline.com & email
 Q&A at the end of the prese...
Moderator

Presenter

Miles Budimir

Allen Chasey

Design World

Eastern U.S. Sales Manager, Dynapar Corp.
Allen Chasey is the Eastern U.S. Sales Manager for Dynapar Corp. and specializes in encoder
and resolver motion feedback, ...
Your customers want…
Two more bells
Five more whistles
Infinite uptime
Negative cost
Your boss wants…
Faster installation
Fewer failures
Lower operating cost
Better throughput
You want…
Work Smarter, Not Harder
Closed-loop feedback






increase throughput
decrease downtime
enhance safety
boost perfor...
“But I don’t build packaging machines.”
Are you involved in
industries like:
Mining
Logging
Aerospace
Steel manufacturing
...
It ain't what you don't know that's
the problem, it's what you know
for sure that just ain't so.
-- Mark Twain
HVAC Cooling Fans: Lesson Learned!

The first engineering team to try it gained an enormous strategic advantage
Rotary Feedback 101
 Speed feedback
 Position feedback
 Close the loop on the
load or on the motor
Resolvers
 Tough--no onboard
electronics
 Analog
 High resolution
Resolver Applications:
• Aerospace
• Oil & Gas (down-...
Did We Mention TOUGH?
Encoders
 Speed or position
 Flexible
 Optical versus
magnetic
 Incremental
versus absolute
 High resolution
 Digita...
Poll question #1
When should you close the loop on the motor rather
than the load?
a) Controlling speed, not displacement
...
#1 Reduce
downtime!!!
…and Downtime is Not.
 Another diagnostic for drives
and controllers
 The canary in the coal mine

 Detect problems fas...
On The Bus
 Logging: if a branch
catches a wire, how do
you find the problem?
 Connected, closed-loop
feedback
#2 Improve
speed control
It’s not about going fast
 The slower you go, the more resolution you need
 If you’re controlling volume, you need to co...
This matters in…
 Underground mining
vehicles
 Better starting and
stopping
 Elevator cars
 Fertilizer spreaders
What does it get you?
 Better quality product – paper,
rolling metal, rubber and tires
 Better starting and stopping –
e...
Poll question #2
When is high-resolution feedback
most important?
a) High-speed motion
b) Low speed motion
c) High-dynamic...
#3 Prevent
Damage
Stop Unsafe Motion
 Protect your system
 Your product
 Your personnel
In Lift Vehicles
 Short jacking – you need to
restrict the arc of the boom
Potentiometers work…






…for a while
…if you don’t have EMI
…or arc welding
…and you don’t need intelligent feedbac...
Absolute encoders…
 …are noncontact
 …are CANbus compatible
 …deliver real-time
diagnostics

Did We Mention TOUGH?
#4 Bridge the
Performance Gap
The Great Divide
 Smart excavators with GPS do a lot…
 Return-to-dig
 Inches of resolution

 …And cost a lot
 Manual ...
Encoders…
 …pinpoint bucket
location
 …pinpoint speed
 …deliver return-to-dig
with greater accuracy
 And did we
mentio...
#5 Make your
equipment last
Entropy sucks.
lack of order or
predictability; gradual
decline into disorder

SOLUTION:
Keep things in ORDER!
Go Closed L...
Your equipment wears
out a little more every day…

Feedback Can
Help!
Hydraulics
 Hard stops and starts = shock
and vibration
 Damage seals
 Loosen connections
 Compromise welds and
fasten...
Hi-Res Feedback

Easy does
Mining--Variable Speed Flow
(and don’t forget Oil & Gas mud pumps!)

Fixed-speed pumps with valves
to control flow.
• Pres...
Closed-Loop Feedback…
Slows Motor BEFORE Valve Closes.

No dead-heading
No explosions
Less wear, longer lifetime
Key Feedback
Trends
Bus Communications
 Health monitoring
 Dynamically reprogrammable
Non-Contact Sensing





Sensors separated from rotating equipment
Easier to install
More forgiving form factor
Fewer ...
Absolute Feedback
 Never lose track of
your location
 Unless you want to
reset home – once or many
 Bus connectivity
 ...
Did we mention
TOUGH?





Stronger bearings
Shaftless
Potted electronics
Chip-based array sensors
bearingless

potted...
And Budget-Friendly Performance?
 Semiconductor fabrication – more for less
 Cost of operations versus cost of acquisiti...
Conclusion (or back to your to-do list)
Closed-loop feedback can give
your product:
 More bells
 More whistles
 Faster ...
Explore What Closed-Loop Feedback
Can Do For You
Questions?
Design World

Miles Budimir
mbudimir@wtwhmedia.com
Phone: 440.234.4531
Twitter: @DW_Motion

Dynapar

Allen Chas...
Thank You
 This webinar will be available at designworldonline.com & email
 Tweet with hashtag #DWwebinar
 Connect with...
The Benefits of Closed Loop Motion Feedback
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The Benefits of Closed Loop Motion Feedback

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In today’s tight economy, OEMs and end-users alike are searching for ways to get an edge over their competition, and closed-loop feedback might just be the best secret weapon you’ve never considered. Sure, encoders and resolvers are a must for high-speed packaging, but did you know that they can provide big savings and performance boosts over the life of a system for applications ranging from dockside loading to oil drilling to firefighting? Today’s encoders and resolvers can increase throughput, decrease downtime, enhance safety, and increase performance. Looking to gain an edge over your competitors.

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Transcript of "The Benefits of Closed Loop Motion Feedback"

  1. 1. Encoders and Resolvers Series: The Benefits to Closed Loop Motion Feedback
  2. 2. Before We Start  This webinar will be available afterwards at designworldonline.com & email  Q&A at the end of the presentation  Hashtag for this webinar: #DWwebinar
  3. 3. Moderator Presenter Miles Budimir Allen Chasey Design World Eastern U.S. Sales Manager, Dynapar Corp.
  4. 4. Allen Chasey is the Eastern U.S. Sales Manager for Dynapar Corp. and specializes in encoder and resolver motion feedback, with a concentrated focus in the Off-Highway Vehicle industry. Allen received his Bachelor of Science in Applied Physics from Jacksonville University, and has worked in the electronic/automation industry for twenty years.
  5. 5. Your customers want… Two more bells Five more whistles Infinite uptime Negative cost
  6. 6. Your boss wants… Faster installation Fewer failures Lower operating cost Better throughput
  7. 7. You want…
  8. 8. Work Smarter, Not Harder Closed-loop feedback      increase throughput decrease downtime enhance safety boost performance long-term savings Paper Mill
  9. 9. “But I don’t build packaging machines.” Are you involved in industries like: Mining Logging Aerospace Steel manufacturing Tire manufacturing Dockside cranes Oil & Gas (drilling,exploration)  Elevator  Motor OEM       
  10. 10. It ain't what you don't know that's the problem, it's what you know for sure that just ain't so. -- Mark Twain
  11. 11. HVAC Cooling Fans: Lesson Learned! The first engineering team to try it gained an enormous strategic advantage
  12. 12. Rotary Feedback 101  Speed feedback  Position feedback  Close the loop on the load or on the motor
  13. 13. Resolvers  Tough--no onboard electronics  Analog  High resolution Resolver Applications: • Aerospace • Oil & Gas (down-hole drilling) • Formula One Racing (Kinetic Energy Recovery System)
  14. 14. Did We Mention TOUGH?
  15. 15. Encoders  Speed or position  Flexible  Optical versus magnetic  Incremental versus absolute  High resolution  Digital Did We Mention TOUGH?
  16. 16. Poll question #1 When should you close the loop on the motor rather than the load? a) Controlling speed, not displacement b) When there’s excessive backlash or “slop” in your system c) When tight speed tolerance (.01%) isn’t required
  17. 17. #1 Reduce downtime!!!
  18. 18. …and Downtime is Not.  Another diagnostic for drives and controllers  The canary in the coal mine  Detect problems faster  Encoders alert drives  Drives and controllers alert HMI  Shop floor to top floor  Planned maintenance vs. unplanned faults
  19. 19. On The Bus  Logging: if a branch catches a wire, how do you find the problem?  Connected, closed-loop feedback
  20. 20. #2 Improve speed control
  21. 21. It’s not about going fast  The slower you go, the more resolution you need  If you’re controlling volume, you need to control speed
  22. 22. This matters in…  Underground mining vehicles  Better starting and stopping  Elevator cars  Fertilizer spreaders
  23. 23. What does it get you?  Better quality product – paper, rolling metal, rubber and tires  Better starting and stopping – elevators, mining vehicles  Less wear  Smaller motors can do the job
  24. 24. Poll question #2 When is high-resolution feedback most important? a) High-speed motion b) Low speed motion c) High-dynamic-range motion
  25. 25. #3 Prevent Damage
  26. 26. Stop Unsafe Motion  Protect your system  Your product  Your personnel
  27. 27. In Lift Vehicles  Short jacking – you need to restrict the arc of the boom
  28. 28. Potentiometers work…     …for a while …if you don’t have EMI …or arc welding …and you don’t need intelligent feedback
  29. 29. Absolute encoders…  …are noncontact  …are CANbus compatible  …deliver real-time diagnostics Did We Mention TOUGH?
  30. 30. #4 Bridge the Performance Gap
  31. 31. The Great Divide  Smart excavators with GPS do a lot…  Return-to-dig  Inches of resolution  …And cost a lot  Manual excavators deliver a bargain…  …What happens when your skilled operator is out sick?
  32. 32. Encoders…  …pinpoint bucket location  …pinpoint speed  …deliver return-to-dig with greater accuracy  And did we mention TOUGH?
  33. 33. #5 Make your equipment last
  34. 34. Entropy sucks. lack of order or predictability; gradual decline into disorder SOLUTION: Keep things in ORDER! Go Closed Loop!
  35. 35. Your equipment wears out a little more every day… Feedback Can Help!
  36. 36. Hydraulics  Hard stops and starts = shock and vibration  Damage seals  Loosen connections  Compromise welds and fasteners
  37. 37. Hi-Res Feedback Easy does
  38. 38. Mining--Variable Speed Flow (and don’t forget Oil & Gas mud pumps!) Fixed-speed pumps with valves to control flow. • Pressure jump creates heat • Any water vaporizes • Things go boom
  39. 39. Closed-Loop Feedback… Slows Motor BEFORE Valve Closes. No dead-heading No explosions Less wear, longer lifetime
  40. 40. Key Feedback Trends
  41. 41. Bus Communications  Health monitoring  Dynamically reprogrammable
  42. 42. Non-Contact Sensing     Sensors separated from rotating equipment Easier to install More forgiving form factor Fewer wear points
  43. 43. Absolute Feedback  Never lose track of your location  Unless you want to reset home – once or many  Bus connectivity  Higher accuracy
  44. 44. Did we mention TOUGH?     Stronger bearings Shaftless Potted electronics Chip-based array sensors bearingless potted electronics shaftless
  45. 45. And Budget-Friendly Performance?  Semiconductor fabrication – more for less  Cost of operations versus cost of acquisition  Modest outlay, big boost
  46. 46. Conclusion (or back to your to-do list) Closed-loop feedback can give your product:  More bells  More whistles  Faster throughput  Better quality  Less downtime  Better cost/performance ratio
  47. 47. Explore What Closed-Loop Feedback Can Do For You
  48. 48. Questions? Design World Miles Budimir mbudimir@wtwhmedia.com Phone: 440.234.4531 Twitter: @DW_Motion Dynapar Allen Chasey Allen.chasey@dynapar.com Phone: 1.678.817.4945 Twitter: @encoders
  49. 49. Thank You  This webinar will be available at designworldonline.com & email  Tweet with hashtag #DWwebinar  Connect with Design World  Discuss this on EngineeringExchange.com
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