Performance Enhancement of Vehicle Mechatronic Inertial Suspension, Employing a Bridge Electrical Network

Abstract

Inerters, a new type of mass element, have been successfully applied in various fields, such as in automotive and civil engineering. The development of a new element, named a mechatronic inerter, which consists of a ball-screw inerter and permanent magnet electric machinery, proves the feasibility of adopting electrical element impedances to simulate corresponding mechanical elements. In this paper, the structures of the bridge electrical network and series-parallel electrical network and their impedance characteristics are first introduced. Then, a seven-degree-of-freedom vehicle model is established. In addition, by comparison with passive suspension, a bridge network and a series-parallel network with various basic topologies are used to improve the vibration isolation performance of mechatronic inertial suspension, and the advantages of the bridge network (a) are demonstrated. Finally, a bridge electrical network (a) was designed and a real vehicle test was carried out. The test results showed that the mechatronic inertial suspension based on the bridge network (a) was superior to the passive suspension; the RMS (root-mean-square) values of the suspension working space and dynamic tire load of the left rear wheel suspension were reduced by 21.1% and 6.3%, respectively; and the RMS value of the centroid acceleration was improved by 1.8%.

Improvement of Commercial Vehicle Seat Suspension Employing a Mechatronic Inerter Element

“…The selection and solution of the impedance transfer function T(s) in the model determines the performance of the suspension. The existing research results show that the higher the order of the impedance transfer function, the better the vibration damping performance [44]. However, considering the complexity of the optimization solution, only T(s) is considered as the biquadratic impedance transfer function, where the expression of biquadratic impedance transfer function is shown in Formula (6):…”

“…In order to further study the impact of mechatronic inerter on the vibration isolation performance of ISD suspension, Shen et al [43] proposed a mechatronic ISD suspension system optimization design method based on fractional-order electrical ne twork. Zhang et al [44] used the bridge network structure as the outside electrical network of the mechatronic inerter to effectively improve the ride comfort of the vehicle. All the above studies have shown that mechatronic ISD suspension can greatly enhance the vibration isolation performance of the suspension system.…”

Advanced X-by-Wire Technologies in Design, Control and Measurement for Vehicular Electrified Chassis

“…An offline optimization and online fine-tuning method for fuzzy neural network parameters were proposed using a particle swarm optimization algorithm and gradient descent method. Reference [4] focuses on developing a mechatronic inerter consisting of a ball-screw inerter and permanent magnet electric machinery. The study proves the feasibility of using electrical element impedances to simulate corresponding mechanical elements.…”