Positioning Mechanism with Three Degrees of Freedom Using Piezoelectric Actuators. - Hidehiko Kuroda; Fumio Yamamoto; Yuji Nagano; Tatsuya Suzuki 001; Yoshihiko Katsuyama; Akinori Satoh (J. Robotics Mechatronics, 1991)

System identification based on variational Bayes method and the invariance under coordinate transformations. - Kenji Fujimoto; Akinori Satoh; Shuichi Fukunaga (CDC/ECC, 2011)