Abstract
The purpose of this paper is to enhance a passive suspension system with an electro-mechanical device in order to improve performance in terms of comfort, handling, and safety. The main goal is to develop a variable geometry suspension system of simple construction, small in size, which requires reduced energy for its implementation, and that is installable without substantial changes to the original passive suspension system through retrofitting operations. The device will be applied to a vehicle whose geometry is inspired by an open-wheel racing vehicle provided with a push-rod suspension. By means of a kinematic analysis, we evaluated geometry and kinematic properties of the suspension system, followed by CAD modeling and subsequent dynamic analysis. The kinematics of the system is analyzed by using the Lotus Suspension Analysis (LSA) software, while the multibody mechanical model is realized in the SimMechanics MATLAB Environment. Numerical simulations show the effectiveness of the proposed method.
Highlights
In industrial applications, the design process of complex mechanical systems, such as for example a threedimensional multi-body system, requires nonconventional methods for the analysis of the approximation present in a general design solution [110]
We present for comparison the response of the multibody system for fixed angular position for the left and right crank with the response of the system under feedforward control law (FFW), and feedback control law (FB) for the rotating cranks under the same input signal reported in (3)
The research conducted by the authors is focused on the development of new methodologies for performing accurate analytic modelling [42,43,44,45], numerical parameter identification based on experimental data [4648], and optimal control optimisation for the dynamic models of rigid-flexible multi-body mechanical systems by using the interdependencies between multi-body dynamics, system identification, and control theory [4952]
Summary
The purpose of this paper is to enhance a passive suspension system with an electro-mechanical device in order to improve performance in terms of comfort, handling, and safety. The main goal is to develop a variable geometry suspension system of simple construction, small in size, which requires reduced energy for its implementation, and that is installable without substantial changes to the original passive suspension system through retrofitting operations. The device will be applied to a vehicle whose geometry is inspired by an open-wheel racing vehicle provided with a push-rod suspension. By means of a kinematic analysis, we evaluated geometry and kinematic properties of the suspension system, followed by CAD modeling and subsequent dynamic analysis. The kinematics of the system is analyzed by using the Lotus Suspension Analysis (LSA) software, while the multibody mechanical model is realized in the SimMechanics MATLAB Environment.
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