Over three hundred four-second / 40hz time series datasets (from simulated emergency braking manoeuvres at English fatal accident sites and field trials) (see Fig 1) were classified using key characteristics of the braking sequences extracted for each event. These characteristics were then tested for significant difference between road surface types and braking system types. One key marker, ave...

This study investigated the degrees of consistencies in driving behavior when operating a real system (real car), a virtual system (high fidelity driving simulator), and a laboratory system (computer driving game). The same tendency of behavioral consistencies was confirmed among the three systems: i.e., the steering operation demonstrated the highest behavioral consistencies, followed by the a...

The desirability and challenge of developing a completely autonomous vehicle and the rising need for more efficient use of energy by automobiles motivate the search for an optimum solution to computer control of energy efficient vehicles. The purpose of this paper is to compare three control methods mechanical, hydraulic and electric that have been used to convert an experimental all terrain ve...

Generally, during the accelerating process of construction machinery large inertia hydraulic swing system, a lot kinetic energy is accumulated, and it will be eventually dissipated through relief valve orifice decelerating process, which results in serious waste overflow loss. In order to solve this problem, new dual source motor with non-uniform flow distribution proposed, can drive high-frequ...

During the early deployment phase of autonomous vehicles, autonomous vehicles will share roads with conventional manually driven vehicles. They will be required to adjust their driving dynamically taking into account not only preceding but also following conventional manually driven vehicles. This paper addresses the challenges of adaptive braking to avoid front-end and rear-end collisions, whe...

The friction forces generated during braking between brake pads and discs produce high thermal gradients on the rubbing surfaces. These thermal gradients may cause braking problems such as brake fade, premature wear or hot spotting and the associated hot judder phenomenon in the frequency range below 100 Hz. Further consequences are comfort reductions, a defective braking process, inhomogeneous...

Anti-lock braking system is designed to optimize braking procedure while maintaining automobile steerability through controlling wheels slip. However, due to nonlinearity and uncertainty of ABS structure, designing the controller for wheel slip encounters so many problems which necessitate a robust control system. In this paper, a hybrid controller is proposed for ABS to address this issue. The...

The Anti-lock braking system (ABS) is an active safety device in road vehicles, which during hard braking maximizes the braking force between the tyre and the road irrespective of the road conditions. This is accomplished by regulating the wheel slip around its optimum value. Due to the high non-linearity of the tyre and road interaction, and uncertainties from vehicle dynamics, a standard PID ...