Optimal Design and Dynamic Control of an ISD Vehicle Suspension Based on an ADD Positive Real Network

Abstract

As a two-terminal mass element, an inerter makes up for the lack of mass impedance in a traditional vehicle suspension system. A passive Inerter-Spring-Damper (ISD) suspension can significantly improve vibration isolation performance in a low frequency range, while the impact is not obvious in other frequency bands. To isolate a wider frequency of vibrations in a vehicle suspension system on the basis of an ISD suspension, this paper combines the concepts of using an Acceleration-Driven-Damping (ADD) approach, which can effectively suppress vibrations in medium and high frequency bands, and an ISD passive network, which is superior in low frequency bands. First, an ideal model optimization design method of an ISD vehicle suspension based on an ADD positive real network is proposed, and a second-order model is built. The parameters are optimized by means of the artificial fish swarm algorithm considering both positive real constraints and suspension performance constraints. Then, on the basis of the optimal ideal model, a radial basis function sliding mode controller is designed to control the ISD vehicle suspension system using a mechatronic inerter. Finally, simulations and experiments are carried out to verify the dynamic performance of the proposed ISD suspension. The results show that a controllable ISD suspension system based on an ADD positive real network can improve the suspension performance effectively and isolate a wide range of frequency vibrations. This research provides theoretical evidence and methodological guidance for further enriching the design and dynamic control of ISD suspension systems. INDEX TERMS Vehicle suspension, inerter, ADD positive real network, sliding mode control, bench test.

Study on adverse effect suppression of hub motor driven vehicles with inertial suspensions

“…Firstly, Quarter models of the inertial suspension, depicted in Figure 5, is established, and the dynamic motion are governed by the following equation. 36 Then, eight different inertial suspension structures with three components in different series and parallel modes are listed, as shown in Figure 6. It is obvious that these eight structures are theoretical realization methods.…”

Optimal Design and Dynamic Performance Analysis of Vehicle Suspension Employing an Eccentric Inerter

“…In [24], a new hydraulically interconnected inerter-spring-damper suspension (HIISDS) has been developed to compensate for traditional passive suspension limitations, such as the imbalance of ride performance and handling stability, and the effectiveness of HIISDS has been verified by simulation results. Yang [25] combines the concepts of using an acceleration-drivendamping (ADD) approach and an ISD passive network to isolate a wider frequency of vibrations in a vehicle suspension system, and the results demonstrate that the controllable ISD suspension system based on the ADD positive real network can enhance the vibration suppression of medium-high frequency bands based on the ISD suspension and thus comprehensively improve suspension performance.…”

Research on predictive coordinated control of ride comfort and road friendliness for heavy vehicle ISD suspension based on the hybrid-hook damping strategy

“…In the field of automobile suspension, the inerter (Inerter-Spring-Damper suspension, ISD suspension) also shows its excellent vibration isolation performance. [19][20][21][22][23] In terms of improving the ride comfort and road friendliness of heavy vehicles, Yang et al 24 studied the dynamic inertia effect of inerter-spring-damper suspension for heavy vehicle on ride comfort and road friendliness. The paper 25 investigated the potential for reduction in road damage by incorporating the inerter element into truck suspension systems.…”