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The paper presents a fuzzy logic model for a semi-active car suspension with preview control assisted by Image processing techniques and also emphasizing its benefits over passive suspension system. The proposed system determines and operates over the range of damping constant required for the acquired road profile. An Inertial Measurement Unit (IMU) sensor has been suggested to determine suspension...
This research focused on the control of vehicle suspension by means of magnetic resistant force coming from the generating process. As the suspension system vibrates the kinetic energy is transformed into the electrical energy through a designed transmission mechanism which converts the translational motion into the rotational motion combined with the claw pole generator. Both resistant force and...
Due to the search for improving vehicle safety, security and reliability, the challenges in the automotive sector have continued to increase in order to confront these requirements. In this context, we have implemented a vehicle Simulink blockset model. The proposed blockset corresponds to the Society of Automotive Engineers SAE benchmark model which is normally connected by the CAN bus we extended...
In this paper, for a quarter-car model, we derive covariance expressions for the MIRA spectrum and calculate the root-mean square outputs for the ISO 8608 classified roads. The derived results are compared with existing works in the literature. We carry out similar calculations for a line spectrum model. The linear and the piecewise-linear spectrum models are also contrasted with the spectrum models...
This paper assesses the use of optimal control for the suspension of an advanced high speed rail vehicle. The flexibility of the vehicle body is included, and strategies using both two and three actuators are investigated. The controller design minimises the combination of vehicle body accelerations, deflections across the secondary suspension, and the actuator force levels.
Safety restraint systems greatly reduce the potential injury risk during vehicle accidents. One major type of accident still remains without adequate occupant protection: Vehicle Rollover. Safety restraint systems for rollover require the prediction of rollover accidents. In this paper, different approaches to detect and predict rollover are investigated. The focus is put on boundaries, requiring...
This paper deals with a new approach to analyse the influence of suspension on dynamic behaviour of vehicle and to synthesise the force-displacement transmittance of suspension. From a half-car model with four degrees of freedom, it is shown how the design of suspension, which is a vibration isolation problem, can be transformed into a synthesis of a robust control law of a multivariable uncertain...
In this paper the problem of lateral dynamics control of a railway car is addressed. A full dynamic model, including car, bogies and wheelsets dynamics is considered, leading to a 34-th order linear system. Two different sensor/actuator configurations are considered and corresponding performances are critically compared. The control strategy is based on a MIMO high order sliding manifold approach,...
The main contribution of this paper is the stabilization of bilinear systems by state feedback control. An extension of nonlinear feedback control based on the NonLinear Pole Placement technique (NLPP) is proposed. Then a polynomial feedback control approach is developed based on Linear Matrix Inequality resolution technique (LMI). Those approaches are applied on the two common classes of bilinear...
Truck suspension system could reduce cab vibration as well as road damage. A number of methods are engaged to promote truck performance, such active and semi active control. With the purpose of reducing dynamic tire force, this paper presents a simulation analysis of a semi active suspension control for light-heavy duty truck, the controller scheme known as Ground Semi Active Damping Force Estimator...
The conflict in the design of automobile suspension systems between ride-comfort, safe driveability in the sense of low dynamic wheel loads and limited suspension deflection can be eased by active suspensions. The versatility and performance of an active suspension system is further increased if its controller parametrization is adapted to the current driving state. This can be achieved by interpreting...
This paper deals with the design of active suspension systems the disturbance attenuation with respect to the road disturbance when some parameters of the suspension model are uncertain, A two-degree-of-freedom quarter-car model is used to implement an LMI-based H2/H∞ approach with polytopic description of the suspension mode.
This paper presents the application of Linear Parameter Varying (LPV) methods in the design of integrated vehicle control systems, in which active components are used in co-operation. In the control design besides performance specifications and uncertainties, it is possible to take fault information into consideration. By monitoring suitable scheduling parameters in the LPV control, the reconfiguration...
An accurate estimation of the vehicle velocity is one of the greatest challenges in modern vehicle systems. The velocity is needed for the Antilock Braking System (ABS) and Traction Control System (TCS) as well as for the Electronic Stability Program (ESP) and cannot be measured directly. Using at least two fist sensors, which measure the vertical frequency component of a front wheel and the related...
Suppression of unnecessary vibration is an important aspect in control system design. Passive, semi active, and active suspension systems are used in vehicles to suppress vibrations and theoretically active suspension systems provide superior performance than the prior two types. This paper proposes a novel method to suppress vibrations using internal motor sensing method. The proposed active vibration...
The aim of the project is to provide an alternative to short distance transport and in turn reduce the ever increasing pollution and demand on fuel resources. Our objective is the development of a solar powered electric recumbent trike which will cater to the present day transport needs without being a burden on the environment and also does not compromise on matters like stability and comfort.
This paper describes the design and implementation of the Adaptive Neuro Fuzzy Inference System (ANFIS) and the conventional Proportional, Integral and Derivative (PID) controller for an experimental Active Suspension System (ASS) in order to improve the travelling comfort of the passengers. Effective control of ride quality and handling performance are challenges for active vehicle suspension systems,...
This paper considers the problem of vehicle suspension control from the perspective of a Vehicle-to-Cloud-to-Vehicle (V2C2V) distributed implementation. A simplified variant of the problem is examined based on the linear quarter-car model of semi-active suspension dynamics. Road disturbance is modeled as a combination of a known road profile, an unmeasured stochastic road profile and potholes. Suspension...
In the paper an idea to apply evolutionary computation method with dedicated fitness function in dynamic system simulation and positioning is presented. Dedicated evolutionary system's efficiency in simulation, optimization and positioning of examined object is discussed. Presented experiments show common duty as well as extensive, overloading and dangerous situations at work. Research results are...
An Active Suspension System has the capacity to introduce, accumulate, and disperse energy to the system. Depending on the functional circumstances, the system may vary its parameters. This paper seeks to explain the designing of an Active Suspension System for heavy vehicles in the form of a case study and is focused on three methodological approaches: Proportional Integral Derivative control, Linear...
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