1. New sensorless vector control methods based on a new minimum-order flux state-observer in the “D-module” for permanent-magnet synchronous motors;Shinnaka;IEEJ Trans IA,2003
2. Shinnaka S. Convergence characteristics of estimated speed of D-state observer for PMSM sensorless drive. 2006 IEEJ Conf on Industrial Applications, 1, p 393-398.
3. A new unified analysis of estimate errors by model-matching phase-estimation methods for sensorless drive of permanent-magnet synchronous motors and new trajectory-oriented vector control, Part I;Shinnaka;IEEJ Trans IA,2007
4. Shinnaka S. Unified vector analysis of synchronous motors. 1997 IEEJ Conf on Industrial Applications, 2, p 211-216.
5. A new multivariable filter with variable-frequency characteristics for three-phase signal processing-Simple production of effects by filters accompanies with vector rotators;Shinnaka;IEEJ Trans IA,2001