The stepper motor controller needs input in terms of number of steps and time duration of rotation.
I find it very difficult to estimate a base scale to do the calculations as my angle of tilt varies according to both the parameters.
Is it a hardware problem? Is it because you are using stepper motors?
Do they not have a small enough effective step size?
If you have a fixed reference for zero, you should be able to keep internal variables in software for the current position, and work out the direction, speed and distance from simple math calculations.
Why do you think this? The angle of tilt is a simple function of the number of steps the motor has received since it was at top dead center. The speed of these pulses only determine the length of time until the table gets to this degree of tilt.
the stepper motor controller that I am using is the egg bot controller board.
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