scholarly journals OPTIMUM RESPONSE CONTROL OF MULTI-DEGREE-OF-FREEDOM SEISMIC CONTROL SYSTEM INCORPORATED WITH CONCENTRATEDLY ARRENGED TUNED VISCOUS MASS DAMPERS

2015 ◽  
Vol 80 (715) ◽  
pp. 1393-1402 ◽  
Author(s):  
Toshiki SHINJO ◽  
Masahiro IKENAGA ◽  
Kohju IKAGO ◽  
Norio INOUE
Keyword(s):  
Control System ◽  
Degree Of Freedom ◽  
Response Control ◽  
Seismic Control ◽  
Viscous Mass ◽  
Optimum Response

scholarly journals A SEISMIC CONTROL SYSTEM WITH MULTI-TUNING VISCOUS MASS DAMPER AND ITS DESIGN METHOD

2009 ◽  
Vol 74 (643) ◽  
pp. 1575-1583 ◽  
Author(s):  
Hidenori KIDA ◽  
Shigeki NAKAMINAMI ◽  
Kenji SAITO ◽  
Kohju IKAGO ◽  
Norio INOUE
Keyword(s):  
Control System ◽  
Design Method ◽  
Seismic Control ◽  
Mass Damper ◽  
Viscous Mass

scholarly journals SHAKING TABLE TEST OF SEISMIC CONTROL SYSTEM USING FORCE RESTRICTED TUNED VISCOUS MASS DAMPER

2012 ◽  
Vol 18 (39) ◽  
pp. 437-440 ◽  
Author(s):  
Masahiro IKENAGA ◽  
Taichi YOSHIKAWA ◽  
Takuya NAGASE ◽  
Kohju IKAGO ◽  
Norio INOUE
Keyword(s):  
Control System ◽  
Shaking Table Test ◽  
Shaking Table ◽  
Seismic Control ◽  
Mass Damper ◽  
Viscous Mass

Robust Two-degree-of-freedom Control Based on H∞ Method for PMSM Drive System

2020 ◽  
Vol 13 (4) ◽  
pp. 496-506
Author(s):  
Qixin Zhu ◽  
Lei Xiong ◽  
Hongli Liu ◽  
Yonghong Zhu ◽  
Guoping Zhang
Keyword(s):  
Control System ◽  
Control Theory ◽  
Position Control ◽  
Dynamic Performance ◽  
Servo System ◽  
Degree Of Freedom ◽  
Trade Off ◽  
Standard Design ◽  
Position Controller ◽  
Two Degree Of Freedom

Background: The conventional method using one-degree-of-freedom (1DOF) controller for Permanent Magnet Synchronous Motor (PMSM) servo system has the trade-off problem between the dynamic performance and the robustness. Methods: In this paper, by using H∞ control theory, a novel robust two-degree-of-freedom (2DOF) controller has been proposed to improve the position control performance of PMSM servo system. Using robust control theory and 2DOF control theory, a H∞ robust position controller has been designed and discussed in detail. Results: The trade-off problem between the dynamic performance and robustness which exists in one-degree-of-freedom (1DOF) control can be dealt with by the application of 2DOF control theory. Then, through H∞ control theory, the design of robust position controller can be translated to H∞ robust standard design problem. Moreover, the control system with robust controller has been proved to be stable. Conclusion: Further simulation results demonstrate that compared with the conventional PID control, the designed control system has better robustness and attenuation to the disturbance of load impact.

Coupling dynamic modeling and simulation of three-degree-of-freedom micromanipulator based on piezoelectric ceramic of fuzzy PID

2017 ◽  
Vol 31 (24) ◽  
pp. 1750140 ◽  
Author(s):  
Dongjie Li ◽  
Yu Fu ◽  
Liu Yang
Keyword(s):  
Control System ◽  
Piezoelectric Ceramic ◽  
Degree Of Freedom ◽  
Movement Direction ◽  
Fuzzy Pid ◽  
Modeling Analysis ◽  
Coupling Dynamics ◽  
Coupling Dynamic ◽  
Three Degree Of Freedom ◽  
Actual Trajectory

For further research on the microparticles trajectory in the process of micromanipulation, the paper modeled on the coupling dynamic of three-degree-of-freedom micromanipulator which is based on piezoelectric ceramic. In the micromanipulation, the transformation of certain movement direction can generate a corresponding change in the coupling in three-degree-of-freedom micromanipulator movement, the fuzzy PID method was adopted by the control system of this study, and the modeling analysis was performed on the control system. After completing the above modeling, the simulation model is built by the MATLAB Simulink software. The simulation output results are basically in accordance with the actual trajectory, which achieve the successful research purposes of coupling dynamics model for three-degree-of-freedom micromanipulator and application of fuzzy PID method.

scholarly journals Force Control of Flexible Arm Using Two-Degree-of-Freedom Control System.

1998 ◽  
Vol 64 (620) ◽  
pp. 1382-1389 ◽  
Author(s):  
Kouji OKUDA ◽  
Kazuyuki KUHARA ◽  
Minoru SASAKI ◽  
Fumio FUJISAWA
Keyword(s):  
Control System ◽  
Force Control ◽  
Degree Of Freedom ◽  
Flexible Arm ◽  
Two Degree Of Freedom

Improvement in the rollover stability of a liquid-carrying articulated vehicle via a new robust controller

2016 ◽  
Vol 231 (3) ◽  
pp. 322-346 ◽  
Author(s):  
Mohammad Amin Saeedi ◽  
Reza Kazemi ◽  
Shahram Azadi
Keyword(s):  
Control System ◽  
Sliding Mode Control ◽  
Dynamic Model ◽  
Sliding Mode ◽  
Degree Of Freedom ◽  
Roll Control ◽  
Mode Control ◽  
Active Steering ◽  
Articulated Vehicle ◽  
Active Roll Control

In this paper, in order to improve the roll stability of an articulated vehicle carrying a liquid, an active roll control system is utilized by employing two different control methods. First, a 16-degree-of-freedom non-linear dynamic model of an articulated vehicle is developed. Next, the dynamic interaction of the liquid cargo with the vehicle is investigated by integrating a quasi-dynamic liquid sloshing model with a tractor–semitrailer model. Initially, to improve the lateral dynamic stability of the vehicle, an active roll control system is developed using classical integral sliding-mode control. The active anti-roll bar is employed as an actuator to generate the roll moment. Next, in order to verify the classical sliding-mode control performance and to eliminate its chattering, the backstepping method and the sliding-mode control method are combined. Subsequently, backstepping sliding-mode control as a new robust control is implemented. Moreover, in order to prevent both yaw instability and jackknifing, an active steering control system is designed on the basis of a simplified three-degree-of-freedom dynamic model of an articulated vehicle carrying a liquid. In the introduced system, the yaw rate of the tractor, the lateral velocity of the tractor and the articulation angle are considered as the three state variables which are targeted in order to track their desired values. The simulation results show that the combined proposed roll control system is more successful in achieving target control and reducing the lateral load transfer ratio than is classical sliding-mode control. A more detailed investigation confirms that the designed active steering system improves both the lateral stability of the vehicle and its handling, in particular during a severe lane-change manoeuvre in which considerable instability occurs.

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