technotes.tick

From What I Understand the rotary encoders are the same as the quadrature encoder.So the following writing I did is for understanding such a system. Following helped me in understanding the rotary encoder,                  The below site has good visuals and writing about the type of encoders: http://www.anaheimautomation.com/manuals/forms/encoder-guide.php#sthash.YJMaBtVs.dpbs So points that I feel must be remembered while doing so are(These where obtained from a PDF material I got from Internet regarding the various encoders  as I have no experience with these - So if the owner of the content wants me remove these please ask me so and I will be happy to do it), Rotary encoders, also called rotary shaft encoders or rotary shaft-angle encoders. They provide rate and positioning information in servo feedback loops.  A rotary encoder can sense a number of discrete positions per revolution. The number is called p...

Important from the AVR freaks http://www.avrfreaks.net/index.php?name=PNphpBB2&file=viewtopic&p=1030267 If I have to remove these contents against copyright please do leave a comment,I will remove it. All I wanted with this post was to accumulate all these to this page as I will not loose time pondering the internet for these data. Following are some extracts from the comment section of the AVR freaks : For a simple servo control we have to:  Read the actual position  Compare with demanded position  Compute the error  Add some deadband  Tell motor to go fwd,rev or stop  The longest part would be reading the adc, i would guess a total of 200us for each servo  For the linear actuators,  Get current position  Compare with wanted position  Tell motor to go fwd,rev or stop  Encoder fires an external interrupt. Isr updates the current position and stops the motor when it hits the wanted position.  Flat ...