Search Results - "Yubai, K."

Fault-tolerant control system of flexible arm for sensor fault by using reaction force observer by Izumikawa, Y., Yubai, K., Hirai, J.

“…In recent years, control system reliability has received much attention with increase of situations where computer-controlled systems such as robot control…”
Get full text

Iterative Design of the Reduced-Order Weight and Controller for the H Loop-Shaping Method Under Open-Loop Magnitude Constraints for SISO Systems by Katayama, S., Yubai, K., Hirai, J.

“…The H infin loop-shaping method is known to be an effective control method. However, it has two drawbacks. The first is that it is difficult to select…”
Get full text

Suppression of limit cycle and improvement of robust performance in two-mass resonant systems with nonlinearity by Komada, S., Iyama, K., Yubai, K., Hori, T.

“…Two-mass systems are shown as a model of two masses connected by a spring and often seen in mechanical systems. PID control, resonance ratio control, H/sup…”
Get full text

Iterative Design of the Reduced-Order Weight and Controller for theH_{infty} Loop-Shaping Method Under Open-Loop Magnitude Constraints for SISO Systems by Katayama, S, Yubai, K, Hirai, J

“…TheH_{infty} loop-shaping method is known to be an effective control method. However, it has two drawbacks. The first is that it is difficult to select…”
Get full text

Iterative Design of the Reduced-Order Weight and Controller for the [Formula Omitted] Loop-Shaping Method Under Open-Loop Magnitude Constraints for SISO Systems by Katayama, S, Yubai, K, Hirai, J

“…In the proposed method, the weight structure is first fixed, and the weight is then decomposed into a frequency-dependent vector and parameter matrices…”
Get full text

Iterative Design of the Reduced-Order Weight and Controller for the H infty Loop-Shaping Method Under Open-Loop Magnitude Constraints for SISO Systems by Katayama, S, Yubai, K, Hirai, J

“…The H sub(infin) loop-shaping method is known to be an effective control method. However, it has two drawbacks. The first is that it is difficult to select…”
Get full text

Joint design method of 2DOF control system based on its factorized representation by Yubai, K., Hirai, J.

“…In many cases, control system synthesis is formulated as minimization of prescribed closed loop performance reflecting control requirements. Since the closed…”
Get full text

Fault-tolerant control system of flexible arm for sensor fault by using reaction force observer by Izumikawa, Y., Yubai, K., Hirai, J.

“…In recent years, control system reliability has received much attention with increase of situations where computer-controlled systems such as robot control…”
Get full text

Vibration suppression control of flexible arm robot by PD gain switching considering sensor failure by Izumikawa, Y., Yubai, K., Hori, T.

“…In this paper, we propose a fault tolerant control system for sensor failures. This system can detect sensor failures by an observer-based fault detector and…”
Get full text

Design of track-following controller satisfying robust performance condition on Nyquist diagram by Nagasaka, T., Yubai, K., Hirai, Junji

“…A new approach for the robust fixed-order H ∞ controller design by convex optimization is proposed. In this paper, the robust performance condition is…”
Get full text

Correlation-based direct tuning of multivariable controllers with stability constraints based on spectral analysis by Terada, S., Yubai, K., Hirai, J.

“…This paper proposes the model-free controller tuning method for MIMO systems ensuring closed-loop stability by imposing a set of constraints for discretely…”
Get full text

Simultaneous design of controller and fault detector and its application to motor drive control system by Nakamura, H., Suzuki, T., Okuma, S., Yubai, K., Tomizuka, M.

“…This paper presents a simultaneous design strategy of controller and fault detector and its application to motor drive control systems. The influence of a…”
Get full text

A direct design from input/output data of the youla parameter for compensating plant perturbation on GIMC structure by Mizutani, A., Yubai, K., Hirai, J.

“…Generalized internal model control (GIMC) structure resolve the problem of trade-off between nominal control performance and robustness. GIMC structure…”
Get full text

Implementation of direct parameters tuning method for multivariable controller using a couple of closed-loop I/O data by Fujii, H., Yubai, K., Hirai, J.

“…The purpose of this paper is to demonstrate experimentally the effectiveness of a model-free controller design method for multivariable systems labeled as the…”
Get full text

Design of Gain-scheduled Disturbance Observer -Application to Vertical-Type One-Link Arm by Ikeda, K., Yubai, K., Hirai, J.

“…In general, the actual responses of control systems do not coincide with their nominal ones corresponding to their simulation results due to modeling errors…”
Get full text

Stabilization of Rotary Inverted Pendulum by Gain-scheduling of Weight and H∞ Loop Shaping Controller by Yubai, K., Okuhara, K., Hirai, J.

“…Gain-scheduling control is one of effective methods for plants whose dynamics changes significantly according to its operating point. A frozen parameter method…”
Get full text

Anti-vibration control system with frame vibration suppression method for sensorless IPMSM-driven applications by Suthep, S., Wang, Y., Ishida, M., Yubai, K., Komada, S., Yamamura, N.

“…Permanent Magnet Synchronous Motor(PMSM) frame vibrations can represent significant noise problems. In this paper, a novel position sensorless anti-vibration…”
Get full text

Iterative design of the reduced-order weight and controller for the H∞ loop-shaping method under open-loop magnitude constraints by Yamamoto, M., Yubai, K., Hirai, J.

“…The H ∞ loop-shaping method is known to be an effective control method, however, it has two drawbacks. The first is that it is difficult to select appropriate…”
Get full text

Design of fixed structural controller satisfying robust performance condition on Nyquist diagram by Nagasaka, T., Yubai, K., Hirai, J.

“…A new approach for the robust fixed-order H ∞ controller design by convex optimization is proposed. In this paper, the robust performance condition is…”
Get full text

A design of a gain-scheduling controller by convex optimization satisfying robust performance condition on the Nyquist diagram by Nishiguchi, Y., Yubai, K., Hirai, J.

“…This paper presents a new design approach of a gain-scheduling controller using only frequency responses of the plant without any transfer functions or state…”
Get full text