Control method of Si servo is not just a micro-step control.

It is equipped with the encoder and the memory element to the rear of the motor.
The encoder position information and the current feedback of one revolution 400 pulse resolution are set as the standard. Further, because motor-specific data is stored in the memory at the factory, and the actual stopping accuracy is hiked up to 10000 pulse encoder equivalent by the precise database correction type control method which compensate and inhibit at the time of the motor drive, high-speed, high-precision (equal pitch per pulse) positioning has been realized that had been considered as impossible by the micro-step control.

Cogging torque and torque ripple occur due to the processing of the motor and the assembling accuracy, which become a major factor of inhibiting low vibration and high precision positioning.

Si servo measures accurately to understand motor-specific data and the positioning accuracy during micro-step control which adversely affect to these control.
The database of the optimal current waveform is stored in the memory at rear of the motor, and it is transferred to the driver through the encoder cable when the power is turned on to give an optimum correction current instruction at high speed during motor operation, and therefore the vibrating element of the motor is removed significantly.

Si servo has a built-in positioning function as well as the Cuty-Axis.

While position control is performed by a pulse train position command from the host controller for a typical generic servo driver, Si servo is possible to make the program operation using the point table data (maximum 256 points) that is stored in the internal memory by the external control inputs or the communication command.

Of course the position control by pulse train as the normal servo drivers is also possible.