Control performance of suspension system of cars with PID control based on 3D dynamic model

Abstract

To evaluate the control performance of the PID controller for the cars, a 3D car dynamic model with 8-DOF which can fully reflect the pitch and roll of the car body is proposed in this study. The PID controller is then researched and applied to control the active suspension system of the cars under the different excitations of the road surface and the various car speeds. The control performance for improving the ride comfort of the driver is evaluated via the root-mean-square (RMS) of acceleration responses of the vertical driver's seat, pitching and rolling car body angles. The research results show that the PID controller for the car suspension system have an obvious impact on reducing the vibration and controlling the car body shaking in comparison with the passive suspension system.

Controlling isolation system of initial combustion engines

“…Based on the research result in Refs. [13][14][15][16], the vertical force response of the HM is written as follows:…”

“…To control the vehicle suspension system, some control methods are applied, such as fuzzy logic control, PID control, 𝐻 control, combined control methods [7,15,16]. However, the PID control not only has a high performance but also is a simple structure.…”

“…However, the PID control not only has a high performance but also is a simple structure. The equation of the PID control is described as follows [15]:…”

“…To solve these problems, a dynamic model of the inline 4-cylinder engine is considered to determine the excitation force of the engine on the engine isolation system. By the combination of the random excitation of the vehicle floor affecting the engine isolation system, three types of the engine isolation systems including the TRM, HM, and HM controlled by the PID control [15][16] are then proposed and studied for the efficiency of them on isolating the engine vibration and improving the vehicle's ride comfort. Both the root mean square (RMS) values of the engine acceleration response (𝑎 ) and isolation force (𝐹 ) of engine isolation systems are given to evaluate the efficiency of three types of isolation systems.…”

A Novel Sliding Mode Control Algorithm for an Active Suspension System Considering with the Hydraulic Actuator

“…To evaluate the oscillation, several parameters are considered, such as displacement of the sprung mass, acceleration of the sprung mass, roll angle, etc. These parameters are evaluated based on the maximum value and the average value which is calculated according to the Root Mean Square (RMS) (Tian and Nguyen, 2020). In addition, the oscillation frequency should also be considered.…”