Controller Mapping

[mjroman20]

Originally Posted by Volt_Ampere

Can you get field current and armature current vs RPM? That will show how the field weakens as your RPM increases.

I could have, yes, but it was a bit of a primitive setup. Used the pulses from the speed sensor as a digital input to calculate RPM.

[Volt_Ampere]

That is what the controller uses too. I built a speedometer using the sensor pulses. Works great.

[mjroman20]

Originally Posted by Volt_Ampere

That is what the controller uses too. I built a speedometer using the sensor pulses. Works great.

I mean I would have preferred a device that actually put out an RPM value rather than calculating it. Testing motors with "high speed" magnets on the same setup would show as going half their actual speed. (thus how they fool the control into going faster) It isn't difficult to adjust the data accordingly just obnoxious.

[Volt_Ampere]

Anything that measures RPM has to calculate it. The pulse tach is a great way to measure RPM. You get either 2 or 4 cycles per rev depending on whether your magnet is 4 or 8 pole.

[fishbooz]

Originally Posted by glassk

The NEW Madjax Torque Controller is a "Game Changer" when it comes to on-the-fly control of your golf cars performance.

In hilly terrain, adjust the torque higher and shoot up that hill.

On flat ground, adjust the speed and roll down that road.

The Economy Mode allows you to stretch battery life even longer.

The lockout feature allows you to lock the settings of your car in place.

The technology used in this controller is super efficient again allowing for extended hours on your battery charge.


http://www.extremekartz.com/madjax-6...ue-controller/

just sayin,...

glassk .. that is a great controller I have loved mine so far plus you can turn it all the way down and lock it and let the kids drive it , mine has never had any motor heat issues at all but I don't max it out on speed and torque either. Sergio explains the settings exactly as Silverwolf explained it to me, plus the controller is small so you can re use the dust cover on the precedents with a little cutting for the plug that connects to the controller

[mjroman20]

Originally Posted by Volt_Ampere

Anything that measures RPM has to calculate it. The pulse tach is a great way to measure RPM. You get either 2 or 4 cycles per rev depending on whether your magnet is 4 or 8 pole.

Pre-calculated and calibrated so I don't have to do it with my questionable script writing skills. There are optical encoders out there that use a strip of reflective tape. So it wont depend on the motor magnet and would probably be a 'true-er' RPM reading since it just counts the passes of the reflective surface over time. Then I don't have to adjust MY programming, MatLab never was my forte.

[Volt_Ampere]

The sensor has it's own magnet and they are deadly accurate if you count the pulses / measure the pulse period. There is really no advantage of optical for this application or the golf cart manufacturers would use them.