Potential of low bandwidth active suspension control with continuously variable damper

Koch, Guido; Fritsch, Oliver; Lohmann, Boris

doi:10.1016/j.conengprac.2010.03.007

Cited by 33 publications

(15 citation statements)

References 22 publications

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“…In various research studies of varying complexity of models based on the intended application, quarter automobile models with two degrees of freedom that manage transverse movements of the vehicle have been used to manage perpendicular movements of the machine. Defined the velocity of vibration converted to passengers and limits of comfort [3][4][5][6]. Semi model automobile with four degrees of freedom [7][8][9] also a seven-degree-of-freedom complete orthogonal simulation of the automobile [10][11][12][13].…”

Section: Related Workmentioning

confidence: 99%

Modeling Analysis and Simulation of Wheel Suspension System's Response for Quarter Car Model by Using 20-sim Software for Honda Civic Lx 2019 Sedan

Hadwan

Mahdi

Hussein³

2021

Period. Polytech. Mech. Eng.

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This paper exhibits a study of car passive and active- suspension system to improving drive exhilarate to passengers while also enhancing vehicle stability by decreasing the effect of oscillation on the suspension. Modeling and simulation by using the bond diagram. They much concede a prime arrangement of the machine to the exterior surrounding: street quality, atmospherically circumstances, while guarantying driver as well as passengers, major safeness and more potentially exhilarate. Automotive aid it course manners. The result cleared this action plan at different set during the vehicle mean, but particularly in evolution level. It is also clear the proportion of suspension system's mass to the vehicle's mass. Also graphical representation of suspension system' parameters like vertical passenger displacement, potential energy of mass of suspension system and acceleration. To foretell the comportment of a car, it is necessary to make design, modeling, and simulation. Honda Civic Lx 2019 sedan car has used for modeling, and simulation.

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Section: Related Workmentioning

confidence: 99%

Modeling Analysis and Simulation of Wheel Suspension System's Response for Quarter Car Model by Using 20-sim Software for Honda Civic Lx 2019 Sedan

Hadwan

Mahdi

Hussein³

2021

Period. Polytech. Mech. Eng.

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“…where R f is a constant roughness factor, f is the excitation frequency and v is the vehicle velocity. In [9] the PSD of approximation road profiles (28) is compared with the measured highway road profile. It is reported that the approximation by the disturbance model reflects the characteristics of the real road over a wide frequency range.…”

Section: Proofmentioning

confidence: 99%

“…It is reported that the approximation by the disturbance model reflects the characteristics of the real road over a wide frequency range. When the parameter n = −2, PSD ground velocity is given by [9] Sż…”

Section: Proofmentioning

confidence: 99%

“…Studies on the actuator power consumption of active suspension is conducted in [8] where anti windup and override control strategies are used to deal with input and output constraints. Several studies on low bandwidth active suspension have also been conducted [9,10,11] where the linear quadratic regulator (LQR) design techniques is used. The result shows that LBAS has a huge performance improvement compared to passive suspension and a competitive performance compared to high bandwidth active suspension.…”

Section: Introductionmentioning

confidence: 99%

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Constrained ℋ∞ control for low bandwidth active suspensions

Wasiwitono¹,

Sutantra²

2017

AIP Conference Proceedings

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Low Bandwidth Active Suspension (LBAS) is shown to be more competitive to High Bandwidth Active Suspension (HBAS) when energy and cost aspects are taken into account. In this paper, the constrained H ∞ control scheme is applied for LBAS system. The H ∞ performance is used to measure ride comfort while the concept of reachable set in a state-space ellipsoid defined by a quadratic storage function is used to capture the time domain constraint that representing the requirements for road holding, suspension deflection limitation and actuator saturation. Then, the control problem is derived in the framework of Linear Matrix Inequality (LMI) optimization. The simulation is conducted considering the road disturbance as a stationary random process. The achievable performance of LBAS is analyzed for different values of bandwidth and damping ratio.

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“…However, these requirements are conflicting. The optimal body damping ratio regarding handling is approximately 0.40, while optimal comfort in contrast can be achieved with the body damping ratio around 0.16 (2) . Various approaches have been proposed to improve the performance and to manage the trade-off between conflicting performance requirements of the vehicle active suspension system, such as adaptive control (3) , nonlinear control (4) , constrained H ∞ control (5) , gain scheduling control (6) and multi-objective control (7) .…”

Section: Introductionmentioning

confidence: 98%

Fixed-Order Output Feedback Control and Anti-Windup Compensation for Active Suspension Systems

Wasiwitono

Saeki

2011

JSDD

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In this study, we apply an anti-windup scheme to the vehicle active suspension system. A fixed-order output feedback controller which does not explicitly take into account the actuator saturation constraint is first designed. Then, an anti-windup compensator is designed to handle the saturation constraint. Local control design technique based on the circle criterion and L 2 gain performance is used for the anti-windup compensator synthesis. A quarter car model is considered in this study and the effectiveness of the proposed approach is shown by a numerical example.The use of static-output feedback control for vehicle active suspension is proposed in Ref. (13) where genetic algorithm is utilized for the controller synthesis. In Ref. (14), the design of dynamic-output feedback controller for vehicle active suspension with the mixed H 2 /generalized H 2 based on LMI optimization (15) is presented. However, the controller's order is as high as the generalized plant. Recently, a fixed-order H ∞ control design using descent method in the controller gain space is presented in Ref. (16). This method treats the bilinear matrix inequality (BMI) that contains a Lyapunov matrix and the controller gain as variables directly. In addition, the effectiveness of the descent method compared with D-K iteration is shown in Ref. (17).In this study, we propose an alternative approach for the vehicle active suspension system. We perform some separation in the controller such that one part is devoted to achieve nominal performance and the other part is devoted to constraint handling. This is the approach taken in anti-windup compensation (18) . Anti-windup has been studied extensively over the past decades (see e.g., the survey in Refs. (18) -(20)). Originally, windup problems were encountered when using PI/PID controllers (19) where the integral states of the controller are wrongly updated. Later on, it is well known that windup not only occurs in integral controller, but whenever the controller contains badly damped or unstable modes. In addition, even in the absence of dynamic controller elements, saturation nonlinearities can also trigger undesired oscillations due to inappropriate plant state (21) . Therefore, by considering the behavior of the controller and plant states has potential for the performance improvement of the anti-windup compensated system (22), (23) . Furthermore, an attempt to use the anti-windup scheme for active vibration control is given in Refs. (24), (25) which shows the effectiveness of the anti-windup scheme for vibration isolation system. Because the improvement of the ride comfort can be seen as a vibration isolation problem, we aim to study the application of anti-windup scheme on the vehicle active suspension system.The anti-windup compensation involves a two-step design procedure. Namely, a controller is first synthesized for a nominal, usually linear system ignoring saturation. Then, the anti-windup compensator is designed such that, when saturation occurs, this compensator becomes active and leads t...

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Potential of low bandwidth active suspension control with continuously variable damper

Cited by 33 publications

References 22 publications

Modeling Analysis and Simulation of Wheel Suspension System's Response for Quarter Car Model by Using 20-sim Software for Honda Civic Lx 2019 Sedan

Modeling Analysis and Simulation of Wheel Suspension System's Response for Quarter Car Model by Using 20-sim Software for Honda Civic Lx 2019 Sedan

Constrained ℋ∞ control for low bandwidth active suspensions

Fixed-Order Output Feedback Control and Anti-Windup Compensation for Active Suspension Systems

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