Quick torque ripple suppression controlled fast position servo based on hybrid system of disturbance observer and torque ripple table. - Yoshiaki Seki; Kiyoshi Ohishi; Yuki Yokokura; Yuji Ide; Daigo Kuraishi (IECON, 2015)

Parameter Variation Insensitive Armature Temperature Estimation Method for SPMSM Servo System. - Hiroki Iwata; Kiyoshi Ohishi; Yuki Yokokura; Yuji Okada; Yuji Ide; Daigo Kuraishi; Akihiko Takahashi (ICIT, 2019)