Abstract
In this paper, we propose a new design method of the low sensitive electric-servo system with the wide load change.
From the three points shown below, this method has the essential differences from the conventional method.
1. It is based on the concept of obtaining the low sensitive dominant poles and zeros.
2. The model is not used at all.
3. The sensitivity function is not used explicitly.
By applying the Utmost Compensation Type Controllor of 1-type to speed control loop which is constructed inside the position control system firstly, the low sensitive dominant pole and zero mentioned above is realized in this method.
The feature of this method is that, by extending the band width of speed control loop and fixing the zero frequency gain, both of the low sensitivity and stability are achievable simultaneously.
