Active vibration control is an important problem in structures. The objective of active vibration control is to reduce the vibrations of a system by automatic modification of the system’s structural response. In this paper, the modeling and design of a fast output sampling feedback controller for a smart flexible beam system embedded with shear sensors and actuators for SISO system using Timosh...

In this paper, model reference neural network structure is used as a controller for vibration suppression of the Euler–Bernoulli beam under the excitation of moving mass travelling along a vibrating path. The non-dimensional equation of motion the beam acted upon by a moving mass is achieved.  A Dirac-delta function is used to describe the position of the moving mass along the beam and its iner...

This paper is focused on the inherent characteristics of main drive system F5 cold-rolling mill in a steel plant. First, transmission mechanical structure was simplified to five-inertia torsional vibration model. Secondly, coupled model strip and roll established. The electromechanical coupling motor control rotor established again. Finally, AMESim software used calculate natural frequency unde...

The composite material flywheel rotor of a energy storage system (FESS) has low natural frequency. When the suffers from noise interference, magnetic bearing generates force with same frequency as and causes vibration to occur. Thus, it is necessary suppress suspended (MS) FESS. LMS adaptive notch filter generally adopted for suppression. suppression performance different when insertion positio...

Significant structural vibration is an undesirable characteristic in helicopter flight that leads to structural fatigue, poor ride quality for passengers and high acoustic signature for the vehicle. Previous Individual Blade Control (IBC) techniques based on piezoelectric actuator schemes to reduce these effects have been hindered by electromechanical limitations of piezoelectric actuators. The...

Active control methods can be used to eliminate undesired vibrations in engineering structures. Using piezoelectric smart structures for the active vibration control has great potential in engineering applications. In this thesis, numerical and experimental studies on active vibration control of mechanical systems and smart structures have been presented. An integrated analysis procedure has be...

A suspended monorail transit system is a category of urban rail transit, which is effective in alleviating traffic pressure and injury prevention. Meanwhile, with the advantages of low cost and short construction time, suspended monorail transit systems show vast potential for future development. However, the suspended monorail has not been systematically studied in China, and there is a lack o...

One of the main vibration problems of aerospace vehicles with liquid fuel propulsion system is fuel sloshing. This phenomenon is a low frequency vibrational challenge which can affect the motion of the vehicle and degrade the stability of the main control system. In this regards, the motion of the liquid will be very critical when the frequency of the sloshing is very close to the frequencies o...

The Delta robot is a high-speed and high-precision parallel robot. When it in function, the end effector generates residual vibration, which reduces repeat positioning accuracy efficiency. input shaping method has previously been shown to suppress vibration of robot, but suppression effect single-modal shaper not good for delta multiple dominant modes vibration. To solve this problem, paper pro...

A desired characteristic of future spacecraft and space structures is the possibility of reducing the costs inherent with their transport in the space. Hence, it is necessary to decrease their weight; the main drawback consists of the decreased rigidity of the structure. Therefore, the elimination of vibrations becomes an important issue in spacecraft maneuvers. Another issue, related to the pr...