Proposal of Self Resonance Cancellation Control without using drive-side information

In the past 20 years, control methods for two-inertia systems have changed from semi-closed control to full-closed control in order to achieve higher precision positioning. Though there is a trend toward the expansion of the use of load-side encoders in the industry, we can hardly say that control methods using load-side information are sufficiently studied. Therefore, our research group has proposed control methods using a load-side encoder such as Self Resonance Cancellation Control (SRC). We have demonstrated the advantages of SRC, but it needs two encoders. In order to reduce the implementation cost and space, a novel form of SRC, which employs the load-side information only, is proposed using a high-resolution encoder at the load side. The proposed method inherits the main advantages of SRC even though it can remove a drive-side encoder. Simulation and experimental results demonstrate that the comparable performance can be obtained by the proposed method without using drive-side information.