PRECISION DRIVE
Key Takeaway:Positioning accuracy also depends on structural rigidity, Coupling, Encoder, Ball Screw, Load Deflection & Control Settings.
Backlash Is Only One Source of Error
Gearbox backlash affects reversal error, But the complete machine has other mechanical and control errors.
Rigidity Matters Too
Changing loads can deflect shafts, Brackets, Couplings and gearboxes elastically. Even with very low backlash, Insufficient rigidity can still cause positioning errors.
The Control System Also Affects the Result
Encoder Resolution, Servo Gain, Compensation settings and mechanical friction affect final positioning.
How to Apply This Information to Selection?
Do not make a final selection from a single parameter. Review the motor model, Load, Target Output Speed, Torque, Inertia, Check acceleration/deceleration time and mounting interfaces together, Then select the series and model.