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vex_robotics_platforms:vex_edr:motors_and_controllers:motor_overload

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vex_robotics_platforms:vex_edr:motors_and_controllers:motor_overload [2017/06/14 05:01]
biglesliep [Teaching Motor Overload] moved image to right side of text
vex_robotics_platforms:vex_edr:motors_and_controllers:motor_overload [2017/06/14 08:01] (current)
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 {{ :​vex_robotics_platforms:​vex_edr:​motors_and_controllers:​vex-ptc-authenticator.png?​nolink&​250|Judges'​ PTC testing device}}To ensure that teams have not tampered with their PTCs (which would prevent them from stalling under a given load, or provide faster recovery), the VEX Worlds and some regional events have their inspection procedure include [[https://​www.vexrobotics.com/​ptc-authenticator|a PTC test]]. Judges choose one motor from the robot and connect it to their own Cortex that has a testing program installed on it (photo at right((VEX Robotics, "VEX 2-Wire Motor 393 PTC Authenticator,"​ https://​www.vexrobotics.com/​ptc-authenticator))). They run the motor at full speed, and then force a stall by holding the moving part (such as a chassis wheel) in place with their hands. {{ :​vex_robotics_platforms:​vex_edr:​motors_and_controllers:​vex-ptc-authenticator.png?​nolink&​250|Judges'​ PTC testing device}}To ensure that teams have not tampered with their PTCs (which would prevent them from stalling under a given load, or provide faster recovery), the VEX Worlds and some regional events have their inspection procedure include [[https://​www.vexrobotics.com/​ptc-authenticator|a PTC test]]. Judges choose one motor from the robot and connect it to their own Cortex that has a testing program installed on it (photo at right((VEX Robotics, "VEX 2-Wire Motor 393 PTC Authenticator,"​ https://​www.vexrobotics.com/​ptc-authenticator))). They run the motor at full speed, and then force a stall by holding the moving part (such as a chassis wheel) in place with their hands.
  
-From the PTC test Q&A:+From the PTC test Q&A:((Ibid.))
 > Based on extensive in-house testing and discussions with the PTC manufacturer,​ the PTCs in the motor will return to high levels (95%) of performance within 15-20 minutes of being tested. They will be "as good as new" within one hour after a test. Inspectors will do their best to keep this impact to a minimum and fair to all teams at an event. > Based on extensive in-house testing and discussions with the PTC manufacturer,​ the PTCs in the motor will return to high levels (95%) of performance within 15-20 minutes of being tested. They will be "as good as new" within one hour after a test. Inspectors will do their best to keep this impact to a minimum and fair to all teams at an event.
 In other words, judges will attempt to perform the stall test with enough time for the student'​s robot to recover before the next match. However, at VEX Worlds 2017, not all division winners were alloted this full waiting period before the Finals Round Robin matches began. In other words, judges will attempt to perform the stall test with enough time for the student'​s robot to recover before the next match. However, at VEX Worlds 2017, not all division winners were alloted this full waiting period before the Finals Round Robin matches began.
vex_robotics_platforms/vex_edr/motors_and_controllers/motor_overload.txt · Last modified: 2017/06/14 08:01 (external edit)