Optimal Skyhook and Groundhook Control for Semiactive Suspension: A Comprehensive Methodology

Abstract

This manuscript establishes a methodology that guides the designers to develop an optimal controller for a semiactive suspension system. The methodology’s processes are generally explained and straightforwardly, so a designer can extrapolate the methodology to a specific problem. Furthermore, this research presents an optimal control strategy for a semiactive control applied to a quarter vehicle model as an example of using the methodology. A particular interest is made in the advantages of such a simple synthesis and in the compromises that must be done in skyhook and groundhook control law applications. This manuscript exposes a logical and straightforward approach for choosing the controllers’ design parameters; also, efforts must be made to express precise performance specifications and constraints in the control design. The herein methodology could be relevant in the process design for intelligent suspensions, from one-quarter toward the entire vehicle.

Development of a Dynamic Hitch Lift Controller using a Hybrid Control Strategy in A Heavy Combination Vehicle

“…Skyhook moment, 𝑀 𝑆𝑘𝑦 , was introduced to virtually assist the DHIL moment to create the moment balance equation. The Skyhook method has been used by many researchers [22] - [25], [33], [34] to stabilize similar vehicles. The application of the Skyhook moment in this study was to act as an extension to the classical Skyhook, which would mainly be used in a vehicle suspension system.…”

A Review of Electromagnetic Energy Regenerative Suspension System & Key Technologies

“…The control principle of groundhook control is the same as that of skyhook control [163]. Kopylov et al [164] proposed an acceleration-based groundhook control method for electromagnetic energy regenerative suspensions to improve the energy regenerative capability under random road surfaces.…”

Two-Layer Parallel Fuzzy Logic Controller Design for Semiactive Suspension System with a Full Car Model

“…In order to evaluate the efectiveness of the fuzzy logic controller for the semiactive suspension system, the author investigates the excitation frequency up to 100 rad/s when comparing the fuzzy-controlled semiactive suspension system (solid line) with the four cases of the passive suspension system which have diferent damping coefcients (700, 1400, 3000, and 5000 Ns/m) [35,36]. Te simulation results in the frequency domain are characterized by the amplitude-frequency transfer function: the vertical displacement of the sprung mass (Figure 7), the vertical acceleration of the sprung mass (Figure 8), and the acceleration of the pitch angle (Figure 9).…”