Research on Active Control of Driver’s Seat Suspension System

2011 ◽  
Vol 105-107 ◽  
pp. 701-704
Author(s):  
Gong Yu Pan ◽  
Xue Ling Hao
Keyword(s):  
Active Control ◽  
Vertical Vibration ◽  
Suspension System ◽  
Matlab Simulation ◽  
Air Spring ◽  
The Road ◽  
Seat Suspension ◽  
Spring Suspension ◽  
Road Excitation ◽  
On The Road

In order to improve the driver confortness, the 5-DOF analysis mathematical car model with the active seat air-spring suspension system was built. Based on the linear stochastic optimal control theory (LQG), the signal of road’s input as excitation source was used to design the optimal law of this seat active control system. MATLAB simulation programming language was applicated for the response simulation. The results show that the control strategy on the road excitation system has a good applicability on controlling the vibration of the driver’s seat and active seat suspension can more effectively reduce the driver’s vertical vibration acceleration than passive seat suspension.

scholarly journals State Estimation Based on Sigma Point Kalman Filter for Suspension System in Presence of Road Excitation Influenced by Velocity of the Car

2019 ◽  
Vol 2019 ◽  
pp. 1-16 ◽  
Author(s):  
Chi Nguyen Van
Keyword(s):  
Kalman Filter ◽  
State Estimation ◽  
Ride Comfort ◽  
Suspension System ◽  
Wheel Load ◽  
The Road ◽  
Sigma Point ◽  
Road Excitation ◽  
On The Road ◽  
Unsprung Mass

The states of the suspension system including the road excitation depend on the road quality, the velocity of the car, and the sprung mass. Those states play a very important role in the control problem of stability, ride comfort, ride safety, and dynamic wheel load of the suspension systems. The velocities and deflections of the sprung mass and unsprung mass would not be measured fully in the practice. Therefore, it must be estimated by other measured quantities from the system such as acceleration and deflection of sprung mass and unsprung mass. To control the active suspension system, its states need to be estimated accurately and guaranteed the response time. This paper presents the method using the sigma point Kalman filter to estimate the suspension system’s states including the road excitation, the deflections, and the velocities of the sprung mass and unsprung mass. The mathematical model of the suspension system is rewritten for the state estimation problem, and the stochastic load profile is supposed the main noise input. The stochastic characteristic of the road excitation depending on the car’s velocity is taken into account in the model used for suspension system state estimation. The results calculated based on the practical experiment data for specific road profile with some particular velocities of the car show that the suspension system states are estimated quite accurately in comparison with the practice states.

scholarly journals Neuro-Fuzzy Volume Control for Quarter Car Air-Spring Suspension System

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Mohamed Essam Shalabi ◽  
Ahmed M. R. Fath Elbab ◽  
Haitham El-Hussieny ◽  
A. A. Abouelsoud
Keyword(s):  
Suspension System ◽  
Volume Control ◽  
Air Spring ◽  
Neuro Fuzzy ◽  
Spring Suspension ◽  
Quarter Car

scholarly journals Effect of Road Profile on Suspension System of Heavy Truck

2019 ◽  
Vol 12 (2) ◽  
pp. 71-75
Author(s):  
Salem F. Salman
Keyword(s):  
Steering System ◽  
Suspension System ◽  
The Road ◽  
Road Profile ◽  
Road Roughness ◽  
Road Type ◽  
Heavy Truck ◽  
Main Factors ◽  
On The Road ◽  
The Stability

All vehicles are affected by the type of the road they are moving on it.  Therefore the stability depends mainly on the amount of vibrations and steering system, which in turn depend on two main factors: the first is on the road type, which specifies the amount of vibrations arising from the movement of the wheels above it, and the second on is the type of the used suspension system, and how the parts connect with each other. As well as the damping factors, the tires type, and the used sprungs. In the current study, we will examine the effect of the road roughness on the performance coefficients (speed, displacement, and acceleration) of the joint points by using a BOGE device.

A Kind of Active Control Damping Shock Absorber

2014 ◽  
Vol 620 ◽  
pp. 511-515
Author(s):  
Han Song Yang ◽  
Peng Li ◽  
Li Zhi Gu ◽  
Hui Juan Guo
Keyword(s):  
Active Control ◽  
High Speed ◽  
Shock Absorber ◽  
Mechanical Energy ◽  
Control Variable ◽  
Suspension System ◽  
High Speed Train ◽  
Proportional Valve ◽  
The Road ◽  
Variable Damping

It is the main decrease press type used in high speed train of semi suspension system, as the parameter can not be regulated freely of the semi suspension system, to design a kind of damping shock absorber which with the sensitive and soft system are very important, this system which using of the Electro hydraulic proportional valve to regulation the safety valve, the guide valve and the damping force of shock absorber, get the recycle method of the hydraulic system from inner to outside, and also using the suspension active control variable damping shock absorber to detect the road, this device, in fact, by vibration, which let the valve move relation, turn the mechanical energy into hot and release outside, thus decrease the vibration. To design this variable damping shock absorber ,compared with the semi suspension system ,for it has the connect system and Electro hydraulic proportional valve, and with the road detectors, and various variable parameters, Which let the high speed train more stable and safety, overcome the short of parameter regulation for the semi-automatic suspension system.

B31 Active Control of Vertical Vibration of Pneumatic Air Spring For Rail Train using Acceleration, Velocity and Flow Rate Feedbacks

2009 ◽  
Vol 2009.11 (0) ◽  
pp. 470-473 ◽  
Author(s):  
Tomonori KATO ◽  
Daisuke SHINAGAWA ◽  
Kotaro TADANO ◽  
Kenji KAWASHIMA ◽  
Toshiharu KAGAWA
Keyword(s):  
Active Control ◽  
Flow Rate ◽  
Vertical Vibration ◽  
Air Spring

Modelling and Comparison of Semi-Active Control Logics for Suspension System of 8x8 Armoured Multi-Role Military Vehicle

2014 ◽  
Vol 592-594 ◽  
pp. 2165-2178 ◽  
Author(s):  
M.W. Trikande ◽  
Vinit V. Jagirdar ◽  
Muraleedharan Sujithkumar
Keyword(s):  
Active Control ◽  
Time Domain ◽  
Ride Comfort ◽  
Vertical Direction ◽  
Active Suspension ◽  
Suspension System ◽  
Road Surface ◽  
Vehicle Speed ◽  
The Road ◽  
Road Disturbance

Comparative performance of vehicle suspension system using passive, and semi-active control (on-off and continuous) has been carried out for a multi-axle vehicle under the source of road disturbance. Modelling and prediction for stochastic inputs from random road surface profiles has been carried out. The road surface is considered as a stationary stochastic process in time domain assuming constant vehicle speed. The road surface elevations as a function of time have been generated using IFFT. Semi active suspension gives better ride comfort with consumption of fraction of power required for active suspension. A mathematical model has been developed and control algorithm has been verified with the purpose/objective of reducing the unwanted sprung mass motions such as heave, pitch and roll. However, the cost and complexity of the system increases with implementation of semi-active control, especially in military domain. In addition to fully passive and fully semi-active a comparison has been made with partial semi-active control for a multi-axle vehicle to obviate the constraints. The time domain response of the suspension system using various control logics are obtained and compared. Simulations for different class of roads as defined in ISO: 8608 have been run and the ride comfort is evaluated and compared in terms of rms acceleration at CG in vertical direction (Z), which is the major contributor for ORV (Overall Ride Value) Measurement.

Modelling and simulation of a fore-and-aft driver's seat suspension system with road excitation

2008 ◽  
Vol 38 (5-6) ◽  
pp. 396-409 ◽  
Author(s):  
G.J. Stein ◽  
R. Zahoranský ◽  
T.P. Gunston ◽  
L. Burström ◽  
L. Meyer
Keyword(s):  
Suspension System ◽  
Modelling And Simulation ◽  
Seat Suspension ◽  
Road Excitation

scholarly journals Influence of the Load Distribution And Sizes on the Wheel Geometry in Passenger Cars

2020 ◽  
Vol 23 (1) ◽  
pp. B1-B12
Author(s):  
Jarosław Gonera ◽  
Jerzy Napiórkowski ◽  
Kamil Ciborowski
Keyword(s):  
Road Safety ◽  
Load Distribution ◽  
Rear Axle ◽  
Front Axle ◽  
Suspension System ◽  
Passenger Cars ◽  
The Road ◽  
On The Road ◽  
Load Size ◽  
System Designs

This paper discusses impact of changes in the load size and distribution in passenger cars on geometry of the suspension and steering systems. It was found to have a major impact on the road safety. The research was carried out with the four most popular suspension system designs used in modern passenger cars, i.e. multi-link suspension on both front and rear axles, only on the front axle, only on the rear axle and a simple suspension design for both front and rear axles. Eight load variants were used for the tests. Changes in the following wheel geometry parameters were identified: toe-in and camber angles of all the wheels and castors for the front wheels. The numerical relationships were determined between the load distribution and sizes and changes in suspension and steering systems in passenger cars. It was found that cars with multi-link suspension in both front and rear axles adapt best to changes in weight and load distribution.

Sign in / Sign up

Export Citation Format

Share Document