Combined control effects of brake and active suspension control on the global safety of a full-car nonlinear model

Tchamna, Rodrigue; Youn, Edward; Youn, Iljoong

doi:10.1080/00423114.2014.881511

Cited by 31 publications

(20 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Variation in the suspension actuator force has direct impact on the normal reaction force, which in turn causes the longitudinal/friction force F x to change as defined by Eq. (26). This change in F x causes change in the wheel angular acceleration (Eq.…”

Section: Active Suspension and Abs Integrated Controlmentioning

confidence: 96%

“…(26) are related by the friction coefficient μ. The road friction coefficient μ and the wheel slip ratio λ are related by an expression called Pacejka Magic Formula Tire Model and are given as:…”

Section: Wheel-road Interface Modelmentioning

confidence: 99%

“…An investigation to combine the active suspension and braking forces using four DoF half-car model is presented in [25]. Combined control effects of brake and active suspension for yaw control during cornering are developed in [26].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

NeuroFuzzy Adaptive Control for Full-Car Nonlinear Active Suspension with Onboard Antilock Braking System

Riaz

Khan

2015

Arab J Sci Eng

View full text Add to dashboard Cite

In this paper, the dynamic behavior of the nonlinear full-car model having active suspensions with nine degrees of freedom including driver, passenger seats and antilock braking system (ABS) is analyzed. The comfort analysis of a driver and passengers of the full car with active suspension model including all forms of nonlinearities is very rare in the literature. The literature also lacks the comfort analysis of the driver and passengers, while the car accelerates and decelerates during cornering. The nonlinearities in the proposed model include the dry friction nonlinearities of the suspension dampers and the geometric nonlinearities of the four corners of the car chassis. Modified adaptive NeuroFuzzy Takagi-Sugeno-Kang (NFTSK) control strategies are presented for the vehicle active suspension control to improve the ride quality, road holding capability and vehicle stability. Separate control strategy is used for ABS to avoid wheel locking and slipping for providing better roadwheel contact. The paper also investigates the coordination of active suspensions and ABS to further enhance the performance of the ABS control. To validate the performance of the proposed intelligent control strategies, the response of the vehicle nonlinear model due to road irregularities is evaluated using various performance indexes. The results are then compared with passive control to verify the performance of modified adaptive NFTSK control.

show abstract

Section: Active Suspension and Abs Integrated Controlmentioning

confidence: 96%

Section: Wheel-road Interface Modelmentioning

confidence: 99%

See 1 more Smart Citation

NeuroFuzzy Adaptive Control for Full-Car Nonlinear Active Suspension with Onboard Antilock Braking System

Riaz

Khan

2015

Arab J Sci Eng

View full text Add to dashboard Cite

show abstract

“…The longitudinal displacement along the x ‐axis, the lateral displacement along the y ‐axis and the yawing motion of the car chassis are ignored here because the main motion of interest is the attitude control of a vehicle in cornering. For a more complete vehicle model including the six vehicle body's motion, interested readers should refer to the author's previous paper and the references therein. The dynamics equations of the car body used in this paper are given as follows:

\begin{matrix} left \\ m_{s} {\overset{v}{true}}_{z} = F_{Z s 1} + F_{Z s 2} + F_{Z s 3} + F_{Z s 4} + F_{d_{1}} + F_{d_{2}} + F_{d_{3}} + F_{d_{4}} \\ \overset{true˙}{z} = v_{z} \\ J_{x x} {\overset{ω}{true}}_{x} = - t_{l} (F_{z s 1} + F_{z s 3} + F_{d_{1}} + F_{d_{3}}) + t_{r} (F_{z s 2} + F_{z s 4} + F_{d_{2}} + F_{d_{4}}) \\ \overset{true˙}{ϕ} = ω_{x} \\ J_{y y} {\overset{ω}{true}}_{y} = - l_{f} (F_{z s 1} + F_{z s 2} + F_{d_{1}} + F_{d_{2}}) + l_{r} (F_{z s 3} + F_{z s 4} + F_{d_{3}} + F_{d_{4}}) \\ \overset{true˙}{θ} = ω_{y} \end{matrix}

…”

Section: Vehicle Model and External Disturbancementioning

confidence: 99%

Attitude control of full vehicle using variable stiffness suspension control

Tchamna

Lee

Youn

2014

Optim. Control Appl. Meth.

Self Cite

View full text Add to dashboard Cite

Summary In this paper, the attitude of a ground vehicle travelling in cornering is controlled using a variable stiffness semi‐active suspension control. The main goal of the variable stiffness semi‐active suspension controller is to track as close as possible the performance of the full‐active suspension control. The work is subdivided into two main parts. At first, making use of optimal control theory, the full‐active suspension control of the full car is designed in various ways, depending on the choices of the state's variables. Afterwards, the variable stiffness control algorithm is derived based on the variable damping semi‐active control concept, except that the variable damping is now replaced by the variable stiffness mechanism. Simulation results using various types of manoeuvre show that, when external body forces are applied to the vehicle, the variable stiffness control tracks the performance of the full‐active control for high damping and stiffness coefficient, and for mild damping and stiffness coefficient, the performance of the variable stiffness control follows that of the skyhook controller. Copyright © 2014 John Wiley & Sons, Ltd.

show abstract

“…On such an automated vehicle, body motions, such as acceleration, deceleration and steering, are controlled by machines, not the driver. Unified brake service (UBS) aims to realize the target deceleration requested from the intelligent or automated driving systems [3][4][5][6][7] and becomes a base of many Advance Driver Assist Systems (ADAS) such as Lane Keeping Assist (LKA), Adaptive Cruiser Control (ACC), Automatic Emergency Brake (AEB) and Active Deceleration Control (ADC) [8][9][10][11]. Generally, many of these intelligent systems have the demand of putting the brakes on the wheels, which may result in conflicting objects of target wheel pressures and the repetitive design of the wheel pressures controller.…”

Section: Introductionmentioning

confidence: 99%

Unified Brake Service by a Hierarchical Controller for Active Deceleration Control in an Electric and Automated Vehicle

et al. 2017

View full text Add to dashboard Cite

Abstract:Unified brake service is a universal service for generating certain brake force to meet the demand deceleration and is essential for an automated driving system. However, it is rather difficult to control the pressure in the wheel cylinders to reach the target deceleration of the automated vehicle, which is the key issue of the active deceleration control system (ADC). This paper proposes a hierarchical control method to actively control vehicle deceleration with active-brake actuators. In the upper hierarchical, the target pressure of wheel cylinders is obtained by dynamic equations of a pure electric vehicle. In the lower hierarchical, the solenoid valve instructions and the pump speed of hydraulic control unit (HCU) are determined to satisfy the desired pressure with the feedback of measured wheel cylinder pressure by pressure sensors. Results of road experiments of a pure electric and automated vehicle indicate that the proposed method realizes the target deceleration accurately and efficiently.

show abstract

Combined control effects of brake and active suspension control on the global safety of a full-car nonlinear model

Cited by 31 publications

References 13 publications

NeuroFuzzy Adaptive Control for Full-Car Nonlinear Active Suspension with Onboard Antilock Braking System

NeuroFuzzy Adaptive Control for Full-Car Nonlinear Active Suspension with Onboard Antilock Braking System

Attitude control of full vehicle using variable stiffness suspension control

Unified Brake Service by a Hierarchical Controller for Active Deceleration Control in an Electric and Automated Vehicle

Contact Info

Product

Resources

About