I am still trying to understand what Rich said
.
- cruise control - 60 mph on the turnpike....constant speed and no direction
-- " " going north velocity / motion in a direction ( velocity is a vector quantity)
- sitting at the light with the car, revving her up, pop the clutch, 0 to 60 in 4 seconds - zero velocity to 60 mph in 4 sec ........ acceleration
-- 60 mph on the turnpike going north......floor the gas peddle ..60 to 80 mph in 3 sec - change in velocity in a time frame
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Acceleration and velocity are related and frankly it gets complex quickly since what we are realy talking about is the ability of the
motor to make the axes move. Mach controls how the motor is going to spin but the machine and machining limits the motor
movement.
So in general you have the following:
In practical applications one defines an acceleration desired and finds what is required to achieve it ….or ….. accepts the value based on some other parameters. One could say that they are either designing a system to achieve the task or they accept their system
“ as is “ and the acceleration is defined by what they have.
RICH