Re: Lets talk about encoders
![Quote](images/misc/quote_icon.png)
Originally Posted by
CS900
Thanks for the info. What exactly do you mean scale? The driver scales the input signal from the encoder.
And if I'm understanding this correctly, you get a quadrature signal from the encoder having 2 sensors 90* out of phase and reading the leading and trailing edge of each encoder "tick"?
Many use the term incorrectly, the origin of the term quadrature for these is the fact that there are two signals generated that are 90° (quadrature) apart, for an optical encoder the signals originate at the sensor output as generally two sine waves, Heidenhain and other manuf often leave the signal as this in order for a control to greatly increase the resolution by using a co-tangent calculation, other simply square them up and this allows the option of using either 1 edge, 2 edges or all 4 to increase the basic resolution/count.
Scale means you set a number of encoder counts to represent a distance moved.l.![Cool](images/smilies/cool.png)
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.