So I think I was confused and used the wrong term... this isn't Convolution, it is Sum of Absolute Differences. It is working pretty well as long as I know what parts I need to look for ahead of time.
Now what's killing me is that the system needs to "learn" the part automagically. I can rely...
So, after some research and consideration I came up with a reasonable idea and I wanted to bounce it off the forum. Frankly "if you've got the bucks" turns my company away 100%, unfortunately.
Here's my rough idea:
Scan the image from top to bottom grabbing the width of the object in each row...
IRStuff - That's a great starting point! Thank you. I've learned a fair bit already. Can you tell me if Matlab analysis would transfer well to embedded systems? The image analysis is run on a motorolla DSP.
More input from others (other methods/thoughts) is more than welcome!
First up, I'm sorry that I am posting in this forum. There isn't one that specifically fits this question, but I figured that there would be experts here that could point me in the right direction.
I'm looking for a method of shape detection in low-resolution silhouette images. Unfortunately...
Good thought, but I need to monitor the counts in neutral because half of this machines operation is someone manually turning the shaft.
The machine is a hose reel. The operator puts the machine in neutral to pull out the hose with a tractor, then the engine is used to reel it back up again...
Is there no "edit" function on this board?
Anyway, my second sentance reads:
I dare say it is perfect when moving very VERY slowly, but it is still jumpy (about 1/10th the magnitude and 1/10th the regularity).
but was supposed to read:
I dare say it is perfect when moving very VERY slowly, but...
My "possible" solution has created a massive improvement in the low-speed control. I dare say it is perfect when moving very VERY slowly, but it is still jumpy (about 1/10th the magnitude and 1/10th the regularity).
I made the low-speed algorithm have two counters. One for up and one for down...
That is correct, the shaft is not turning, it is just vibrating so only one part of the quadrature is oscillating. The problem that this causes for the low-speed algorithm is that the counter repeatedly resets and causes a falsely-low time reading which creates a falsely-high speed reading -...
I think you may have misunderstood something. I can always read the quadrature count, the problem that occurs with the low-speed algorithm is when the machine is in neutral (ie, bottom of the CVT speed range) or the transmission is disengaged. The vibration of the motor causes the count to...
Hello all,
I am using a quadrature sensor on a motor-driven piece of farm equipment that spins at a wide range of speeds under normal use (uses a hydraulic CVT). The quadrature signal may be in the low kHz range down to a complete stop or 0.5Hz.
At present I am using two speed algorithms. One...
I won't even have my hands on the machine for a week and I don't know if i'll be able to start PID tuning as new circuit boards need testing. I'll get back when i can, though!
PWM output determines the torque generated by the throttle motor. It is a very rapidly changing system and therefor can use very tight controls to snap the throttle to exactly where i want it quickly.
The system speed changes very slowly, so it has its own PID that takes in speed and puts out...
I just wish i had some better datalogging on this thing so I could try to "excel tune" it. I'll play with it and see where some D tuning gets me. I suppose I'll first tune the P and I according to changes in speed after the initial start has already been overcome, then tune D to prevent the...
