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In the paper a problem of the control vibrations of the smart aluminum plate with SFSF (Supported-Free-Supported-Free) boundary conditions is considered. In order to obtain effectively control system the plate is equipped in two piezo-patch actuators and two piezo-patch sensors oriented in two perpendicular directions X and Y, respectively. Such locations and orientations of the piezo-elements allow...
This paper develops an optimal H∞ state feedback controller for a quarter-car active suspension system application. The plant parameters and performance requirements are borrowed from a prototype in the literature. The control design is done using convex optimization with linear matrix inequality constraints, which ensures a very fast and efficient computation of the controller, without trial and...
We present a study on the active control of vibrations of a flexible mechanical structure in presence of saturation affecting the closed-loop control signal. The application we consider here is a system composed of a flexible beam with one edge clamped on a movable support and the other kinematically free. Two piezoelectric patches are bonded on the beam: one of them is used as an actuator and the...
Coriolis mass flowmeter (CMF) provides direct measurement of mass flow and is generally regarded as the most accurate and precise flow technology in industry. The precondition of its precision measurement is to maintain the flowtube vibration at its natural frequency, which is realized by closed-loop control. Based on the CMF open-loop characteristic test experiment, this paper analysis the experiment...
In this paper, a novel approach to suppress vibration that causes brake noise is proposed employing a closed-loop feedback control method using an Active Force Control (AFC) based strategy. It is used in conjunction with the classic proportional-integral-derivative (PID) scheme that is typically incorporated in the outermost positional control loop. The idea is to introduce an active element that...
This paper deals with the passive/active vibration control problem for damped Duffing systems, using a nonlinear pendulum-type vibration absorber. The primary system is a damped Duffing system affected by exogenous forces with excitation frequencies close to the principal parametric resonance. The design of the (passive) autoparametric vibration absorber is obtained by using an approximation of the...
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