|
|
|
![]() |
|
|||||||
|
||||||||
![]() |
| Thread Tools | Rate Thread | Display Modes |
|
#1
|
|||
|
|||
|
How to Lock a motor
How do you lock a motor?
|
|
#2
|
||||
|
||||
|
Re: How to Lock a motor
what do you mean by lock a motor do you mean dynamic braking or something else
|
|
#3
|
|||
|
|||
|
Re: How to Lock a motor
i mean to make the motor stop moving, when my arm it reaches a certain height it falls pretty fast and i want to know how to lock it at my leisure, so when it starts falling i can lock it and stop it from falling
|
|
#4
|
|||
|
|||
|
Re: How to Lock a motor
There are a few solutions.
My preferred solution is to use a positional feedback sensor of some sort (potentiometer, encoder, etc) mounted to the arm, so the controller knows where the arm is, and then use a PID loop. This is the most complex in terms of programming, but if there's an easy way to mount your sensor it can be the easiest mechanically. The next solution would be to use a worm drive, or a motor that has worm drive built in. The Denso and Keyang window motors are all worm drive, and cannot be back-driven. The third solution, if you don't want to mess with tricky PID tuning or replacing a motor entirely in an arm, is a brake system. Here is a picture of another team's brake mechanism: http://www.chiefdelphi.com/forums/at...9&d=1172112278 You may want to read this thread: http://www.chiefdelphi.com/forums/sh...ighlight=brake EDIT: Never mind, you've already posted on that thread. Last edited by meatmanek : 12-03-2007 at 18:29. |
|
#5
|
|||
|
|||
|
Re: How to Lock a motor
we used a clutch plate mechanism with a servo to release the clutch when we want the elevator to go down.
if you need some pics, let me know. |
|
#6
|
||||
|
||||
|
Re: How to Lock a motor
Turning the brake on, on the speed controller will help too
|
|
#7
|
||||
|
||||
|
Re: How to Lock a motor
Each of these solutions has things that you need to consider.
Quote:
Quote:
Quote:
Quote:
Each of the above will work as long as you take the proper considerations into the design. |
![]() |
| Thread Tools | |
| Display Modes | Rate This Thread |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| Drill motor gearbox lock mechanism | golf_cart_john | Motors | 2 | 28-04-2004 02:22 |
| Rotating the motor cage to lock in LOW | sanddrag | Motors | 3 | 10-03-2004 07:23 |
| How to get Nippon-Denso Motor | walterj | Motors | 2 | 05-02-2004 07:20 |
| How fast is the torque motor? | archiver | 2001 | 3 | 23-06-2002 22:55 |
| How fast could a torque motor turn if a torque motor could.. | archiver | 2001 | 0 | 23-06-2002 22:54 |