Too much or too little friction can cause problems in a motion control system, making it harder for servo drives to do their jobs. High friction motors pose a control problem for machines, as the current required to overcome the stiction element of the motor may then exceed the desired command and result in position Friction


The maximum rate of change in current (di/dt) is dictated by the bus voltage V and the motor inductance L, where di/dt = V/L. A minimum amount of inductance is required for a stable current loop. Issues Too much motor inductance can make the current loop sluggish, leading to difficulties during the tuning process and Inductance