|
| LinkBack | Thread Tools | Display Modes |
10-14-2011, 09:59 AM | #1 |
Newbie Join Date: Oct 2011 Location: Romania
Posts: 2
| Homemade controller problem
Hello, I built a ESC based on MC33035 IC.http://roboturk.googlecode.com/files/MC33035-D.PDF The circuit is analogical with a input potentiometer for speed,brake pin, current sense pin,pwm optional pin,and an optional ic for loop control. It has a hall sensor for reading the position of the rotor. the circuit is working but not so well. The motor is an outrunner Emax BL4030/10 with 12 poles and 14 magnets. The problem is that it has pin 22 for selecting the 60 electrical degree or 120 electrical degree. I set it initial at 60 degree and i tried all distances combination between the sensors ,not working well because it has a FAULT led that is stopping the motor if the sensor reading is not correct. If i only leave a sensor the motor will spin but only if i spin with my hand at initial moment. I tried also with 120 degree setting.Bot not running smooth only if i turn it with my hand and only if i use one sensor. Here is an animation with order of all hall sensors . 4-POLE BRUSHLESS DC MOTOR ANIMATION In the animation the sequence is 1 0 0 1 1 0 0 1 0 0 1 1 0 0 1 1 0 1 I never achieve this logic diagram with my sensors. In my motor one sensor in piking only 2 consecutive logic 1 not tree. Can anybody tell me what is the problem because i tried all the positions. IN the animation diagram the motor is in-runner and the rotor has 4 poles. This is my motor https://picasaweb.google.com/1155468...lessController There is a link with this working bout i do not know haw. HXT modified with external hall sensors.wmv - YouTube Can anybody help me? |
Sponsored Links | |
11-06-2011, 01:20 PM | #2 |
Newbie Join Date: Nov 2011 Location: Slovakia
Posts: 1
|
Do not have a Hall sensor placed correctly, they should be placed over the magnets next to each other.
Last edited by enaxy; 11-06-2011 at 01:31 PM. |
| |