Study of the effectiveness of the electromechanical system of active vibration protection of a vehile with various regulators

Abstract

The article considers a single-mass vibration protection system with an executive electromechanical device. The relevance of the research direction and the current state of its knowledge are presented. It is proved that in comparison with the controlled elements of viscous resistance, the controlled stiffeners provide the best quality of vibration protection. The prospects for the use of controlled electromechanical stiffeners are emphasized. The paper considers an actuator in the form of a linear DC motor. Examples of the use of active vibration protection systems with linear electric machines are given. In particular, an example of using as suspension of the vehicle is provided. The advantages and most significant drawbacks of such suspensions, which hinder their mass introduction, are indicated. The design scheme of a single-mass oscillatory system with parallel installation of a viscous friction element and a stiffener is presented. It is substantiated that, taking into account the accepted assumptions, the presented scheme is equivalent to vehicle suspensions. It is proposed to use a magnetorheological vibration damper as a controlled element of viscous resistance. The analysis of the state of the issue of active vibration protection systems with magnetorheological vibration dampers is given. The structure of closed by vibration acceleration of vibroprotection system protected object is developed. There are presented the mathematical models of its functionally necessary elements: vibration sensor, vibration protection system along the disturbance and control channel, linear DC motor. A technique for synthesizing a correction device that provides the desired resonant properties of a closed system is proposed. The results of simulation modeling of an active vibration protection system with a regulator synthesized according to the proposed technique and a regulator, the structure of which was obtained in the author’s previous works, are presented. Based on the obtained results, the conclusions on the presented materials are drawn and recommendations on the use of regulators are formulated.