A Mixed Control System of 3D High Rise Benchmark Building Model Based on Genetic Algorithm

2010 ◽  
Vol 163-167 ◽  
pp. 2862-2867
Author(s):  
Jian Lin Zhang ◽  
Zhi Hong ◽  
Qian Lin ◽  
Jie Sheng Jiang
Keyword(s):  
Genetic Algorithm ◽  
Control System ◽  
Passive Control ◽  
Design Method ◽  
Three Dimensional ◽  
Control Effect ◽  
Building Model ◽  
Mixed Control ◽  
Damper Control ◽  
And Control

In the former research, the Damper control system, TMD control system and the Mixed Control of the active control and passive control were all optimized alone. It is found that less research of the optimization is on the Mixed Control of the Damper system and TMD system. In order to achieve better control effect, we venture to propose a Mixed Control system of third-generation three-dimensional 20-storey Benchmark model under the multi-directional earthquake in this paper. By means of Rayleigh damping and D-value, dynamic equations including the damping matrixes, stiffness matrixes of the structure are obtained. Then in the process of the optimization, the displacement reducing coefficient (DRF) is used as the objective function to optimize the placement of damping devices and control parameters based on Genetic Algorithm (GA). Numerical results in this paper show that the optimal design method proposed in this paper is effective and flexible. It can obviously reduce the seismic responses of building structure.

Analysis of the Mixed Control System of Damper and TMD

2011 ◽  
Vol 291-294 ◽  
pp. 1630-1633
Author(s):  
Qian Lin ◽  
Ze Yao Xu ◽  
Jian Lin Zhang
Keyword(s):  
Genetic Algorithm ◽  
Control System ◽  
Energy Dissipation ◽  
Objective Function ◽  
Control Systems ◽  
Control Effect ◽  
Benchmark Model ◽  
Control Techniques ◽  
Mixed Control ◽  
Wind Vibration

Many new control techniques and energy dissipation systems which can decrease the response of wind vibration and earthquake. But there is less research on the mixed control system of Damper and TMD. In order to improve the shortcomings of Damper system and TMD system, combining their respective advantages reasonably, the mixed control system of Damper and TMD were analyzed in this paper. A 20-storey Benchmark model was used to compare the effects of various control systems under 2-directional earthquake. Taking the displacement reducing coefficient (DRF) as the objective function, Damper system, TMD system, and the mixed control system of Damper and TMD are optimally designed based on Genetic Algorithm (GA). Numerical results show that the mixed control system of dampers and TMD proposed in the paper can work in coordination and complement each other to achieve better control effect.

Multi Mode Vibration Control and Broder Band Motion Control of Three Dimensional Shaking Table

2005 ◽  
Author(s):  
Tsunehiro Wakasugi ◽  
Toru Watanabe ◽  
Kazuto Seto
Keyword(s):  
Vibration Control ◽  
Controller Design ◽  
Design Method ◽  
Three Dimensional ◽  
Design Procedure ◽  
Equation System ◽  
State Equation ◽  
Shaking Table ◽  
Mode Vibration ◽  
And Control

This paper deals with a new system design method for motion and vibration control of a three-dimensional flexible shaking table. An integrated modeling and controller design procedure for flexible shaking table system is presented. An experimental three-dimensional shaking table is built. “Reduced-Order Physical Model” procedure is adopted. A state equation system model is composed and a feedback controller is designed by applying LQI control law to achieve simultaneous motion and vibration control. Adding a feedforward, two-degree-of-freedom control system is designed. Computer simulations and control experiments are carried out and the effectiveness of the presented procedure is investigated. The robustness of the system is also investigated.

Greenhouse Moisture and Temperature Fuzzy Control System and PLC Program Design

2014 ◽  
Vol 721 ◽  
pp. 265-268
Author(s):  
Mao Qi Huang ◽  
Jian Hong Ke ◽  
Xiao Long Wu
Keyword(s):  
Complex System ◽  
Control System ◽  
Fuzzy Control ◽  
Control Program ◽  
Control Effect ◽  
Math Model ◽  
Fuzzy Control System ◽  
Temperature Controller ◽  
Plc Program ◽  
And Control

Greenhouse environment system is an often nonlinear, change and inertia complex system. It is very hard to build math model and control. Since moisture and temperature have a influence to crops grow, we select them to build the manner of control system, applying fuzzy control system to design moisture and temperature controller, and to write fuzzy control program based PLC, then we should observe the factual control effect. The result of system running show: when temperature is set to 25oC and moisture is 80%RH, the process of control is stable and the system is very stable, it can meet the greenhouse requirement.

Optimal Design of ADAS Damped MDOF Structures

1999 ◽  
Vol 15 (2) ◽  
pp. 317-330 ◽  
Author(s):  
Yuri Ribakov ◽  
Jacob Gluck
Keyword(s):  
Optimal Control ◽  
Control System ◽  
Numerical Analysis ◽  
Optimal Control Theory ◽  
Passive Control ◽  
Design Method ◽  
Viscous Damping ◽  
Viscous Dampers ◽  
Structural Frame ◽  
Different Levels

Incorporated at various levels of a structural frame, ADAS devices may be used to improve the response of the structure during earthquakes. A design method of a passive control system for multistory structures using optimal Adding Damping And Stiffness (ADAS) dampers is presented. Optimal Control Theory (OCT) is commonly used to obtain the levels of viscous damping at each story. The optimization leads to different levels of damping at each story. Therefore, a solution with viscous dampers is inconvenient and can be expensive. The proposed method enables the use of relatively less expensive optimal ADAS devices dissipating energy which is equivalent to that of viscous dampers. The method is examined in a numerical analysis of a seven-story shear framed structure. Significant improvement was obtained in the behavior of the ADAS damped structure compared to the uncontrolled one.

Design of a Reconfigurable Dynamic Testbed for Co-Design Method Validation

2017 ◽  
Author(s):  
Anand P. Deshmukh ◽  
Danny J. Lohan ◽  
James T. Allison
Keyword(s):  
Control System ◽  
Design Method ◽  
Design Methods ◽  
System Architectures ◽  
Car Suspension ◽  
Kinematic Behavior ◽  
Wide Range ◽  
Physical Testing ◽  
Dynamic Testbed ◽  
And Control

Physical testing as a technique for validation of engineering design methods can be a valuable source of insights not available through simulation alone. Physical testing also helps to ensure that design methods are suitable for design problems with a practical level of detail, and can reveal issues related to interactions not captured by physics-based computer models. Construction of physical and testing of physical prototypes, however, is costly and time consuming so it is not often used when investigating new design methods for complex systems. This gap is addressed through an innovative testbed presented here that can be reconfigured to achieve a range of different prototype design properties, including kinematic behavior and different control system architectures. Thus, a single testbed can be used for validation of numerous design geometries and control system architectures. The testbed presented here is a mechanically and electronically reconfigurable quarter-car suspension testbed with nonlinear elements that is capable of testing a wide range of both optimal and sub-optimal design prototypes using a single piece of equipment. Kinematic suspension properties can be changed in an automated way to reflect different suspension linkage designs, spring and damper properties can be adjusted in real time, and control system design can be changed easily through streamlined software modifications. While the specific case study is focused on development of a reconfigurable system for validation of co-design methods, the concept extends to physical validation using reconfigurable systems for other classes of design methods.

scholarly journals Genetic Algorithm Optimization and Control System Design of Flexible Structures

2008 ◽  
Vol 17 (Supplement) ◽  
Author(s):  
M.O. Tokhi ◽  
M.Z. Md Zain ◽  
M.S. Alam ◽  
F.M. Aldebrez ◽  
S.Z. Mohd Hashim ◽  
...  
Keyword(s):  
Genetic Algorithm ◽  
Control System ◽  
System Design ◽  
Flexible Structures ◽  
Control System Design ◽  
Algorithm Optimization ◽  
Genetic Algorithm Optimization ◽  
Optimization And Control ◽  
And Control

The Design of the Cable Parameters Acquisition and Control System Based on ZigBee Technology

2013 ◽  
Vol 816-817 ◽  
pp. 339-342
Author(s):  
Jun Li ◽  
Hui Yang ◽  
Hai Ma Yang ◽  
Heng Qing Hu ◽  
Xiang Fei Yu
Keyword(s):  
Control System ◽  
Data Collection ◽  
Design Method ◽  
High Reliability ◽  
Measurement And Control System ◽  
Zigbee Technology ◽  
And Control ◽  
Hardware Circuit ◽  
Measurement And Control ◽  
The Coordinator

Based on the problem of complex wiring, low anti-interference capacity and high cost in wired measurement and control system, we developed and designed a cable parameters acquisition and control system based on ZigBee technology. The system was composed of upper PC, a coordinator node and five data collection nodes, presents the hardware circuit and software design method of the coordinator node based on CC2530, and developed the PC management software based on LabVIEW. By the measurement that five data collection nodes are distributed in the indoor, the actual results show that the system is stable, and high reliability.

scholarly journals Three-Dimensional Modeling and Control of a Tethered UAV-Buoy System

2021 ◽  
Author(s):  
Ahmad Kourani ◽  
Naseem Daher
Keyword(s):  
Control System ◽  
Three Dimensional ◽  
Vertical Motion ◽  
Robotic System ◽  
Three Dimensions ◽  
Spherical Coordinate ◽  
Nonlinear Dynamical ◽  
Modeling And Control ◽  
Three Dimensional Modeling ◽  
And Control

Abstract This work presents the nonlinear dynamical model and motion controller of a system consisting of an unmanned aerial vehicle (UAV) that is tethered to a floating buoy in the three-dimensional (3D) space. Detailed models of the UAV, buoy, and the coupled tethered system dynamics are presented in a marine environment that includes surface-water currents and oscillating gravity waves, in addition to wind gusts. This work extends the previously modeled planar (vertical) motion of this novel robotic system to allow its free motion in all three dimensions. Furthermore, a Directional Surge Velocity Control System (DSVCS) is hereby proposed to allow both the free movement of the UAV around the buoy when the cable is slack, and the manipulation of the buoy’s surge velocity when the cable is taut. Using a spherical coordinate system centered at the buoy, the control system commands the UAV to apply forces on the buoy at specific azimuth and elevation angles via the tether, which yields a more appropriate realization of the control problem as compared to the Cartesian coordinates where the traditional x- , y- , and z -coordinates do not intuitively describe the tether’s tension and orientation. The proposed robotic system and controller offer a new method of interaction and collaboration between UAVs and marine systems from a locomotion perspective. The system is validated in a virtual high-fidelity simulation environment, which was specifically developed for this purpose, while considering various settings and wave scenarios.

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