Abstract
The National Research Institute for Earth Science and Disaster Prevention (NIED) is now conducting for constructing a three-demensional full scale earthquake testing facility (E-defense). The shaking table in this facility will be equiped basic controller designed by Three Variable Control (TVC) Technique. However the procedure todeterm the control gain has been entrusted to the experience of the person who adjusts the gain. Therefore the procedure has not been clarified. To equip a more highly developed control, we should understand the performance of the TVC. This study shows the design technique of TVC and FVC by mathematical process.
