drbitboy
Lifetime Supporting Member
I would like to see an example. Your picture of a scissors lift is not linear. Close but not quite.
Oh for Pete's sake, try reading. That post with picture of a scissors lift was me pulling teeth by wondering if it was more complex than a simple right triangle, actuator as hypotenuse, system.
I hope you would agree that, if
- the base leg of the right triangle is horizontal and fixed in length ("a" in my model), and
- the vertical leg of the right triangle is the line along which the platform moves, and the height of the platform, measured from the base leg to the top of the actuator, is the variable length ("H" in my model), and
- the hypotenuse of the right triangle is the linear actuator, connected to the other end of the base leg and the top of the vertical leg, and is of controlled, variable length ("L = m * X + k" in my model, where X is the encoder count value, and m and k are the coefficients of the linear model),