Dutta, et al [143], combined the artificial bee colony algorithm with the glowworm swarm optimization algorithm to determine the optimal position of actuators and sensors in cantilever beams.
Results show that the best position of actuators varies based on values of thickness and stiffness ratios of the host plate and piezoelectric patches.
The results show that: (1) in the design of actively controlled structures subjected to strong wind excitation, the problem of considering the number of actuators, the position of actuators and the control algorithm simultaneously is of a multi-level design optimization with the properties of non-linearity, discreteness and so on.
Two points from force-displacement curves, foff and fon of elastomer with voltage on and off, are selected as two working equilibrium positions of actuator to calculate the parameters of the preload mechanism, hereby the negative stiffness mechanism is realized.
The transverse vibration of the controlled span part of the string is controlled by the hydraulic touch-roll actuator, and the position of the actuator is considered as the right boundary of the controlled span part.
Furthermore, the optimal positions of actuators are ascertained by singular value decomposition of the modal distributing matrix.
Numerical simulations are performed to explore the required control forces and the optimal mounting positions of actuators under different cost functions.
The design variables include the logic design variables of structural topology, the number and positions of actuators as well as the control design parameters.
In this paper, the optimal design of the numbers and positions of actuators in actively controlled structures is formulated as a three-level optimal design problem.
A double DBD plasma actuator is then placed on the cylinder and the influence of the position of the actuator is studied in order to find the best achievable control.
The analytical-experimental comparisons show the ability of the theoretical model to provide an accurate mean expectation of the position of the actuator less than about 2 mm.
