We developed a passive haptic technique, using the brake of a DC motor, to create a greater perception of impulse force. We found that when using the brake of a DC motor, delivering two short pulses immediately prior to the main brake significantly increases the operator’s perception of impulse force. This finding was verified during our empirical assessment. In the experiment, all five partici...

A Functional Virtual Prototyping full vehicle model for a tri-axial heavy-duty truck is built, and the nonlinearity of suspension dampers and tires is also considered. With the trajectory of full vehicle gravity center, longitudinal tire force of front wheel, longitudinal acceleration, lateral acceleration, yaw rate and pitch angle as the evaluation indexes of brake property, the influences of ...

We have previously demonstrated an abnormally delayed mean brake response time and an increased frequency of abnormally delayed brake responses in a group of neuropathic diabetic drivers compared with a control group of drivers with neither diabetes nor lower extremity neuropathy. The objective of the present case-control study was to compare the mean brake response time between neuropathic dia...

In this paper, a magnetorheological brake (MRB) model that supports van truck going downhill without interfering with the conventional braking system installed on vehicle is designed and simulated. The simulation demonstrates impact of key variables torque, including operation conditions, MRB tooth tilt angle, rotor thickness, count. As result, results show maximum torque value about 136.41 Nm ...

In-wheel motors for new energy vehicles are close to the brake, which results in a high ambient temperature. Thus, there is demand cooling systems. This paper designs an oil-spray-cooled system based on flat structural characteristics of in-wheel motor. A computational fluid dynamics method with two-phase volume-of-fluid model applied simulate transient process oil spraying from nozzles onto st...

In the paper a control of electrohydraulic drive made by human operator which uses a special haptic joystick is presented. On the basis of main equations describing electrohydraulic drive, its simulation model is proposed. To this model a simplified model of human operator is added. The paper presents the system stability problem which can occur when in communication with operator, force feedba...

A theoretical/experimental activity has been carried out on a magnetorheological fluid brake prototype. A non-linear observer and an optimal control have been designed and tested on the physical device. Both the feedback control and the state observer are based on the state dependent Riccati equation technique. A first order non-linear dynamic model has been derived and adopted for the developm...

The measurement of brake squeal vibrations is a difficult problem, because the rotating disc does not allow any physical contact with the sample during measurement. The use of accelerometers is difficult and very time consuming. Non-contact scanning techniques (e.g. vibrometers) are widely used for these applications, and although they provide a very high temporal resolution is available, still...

In this paper, we present a system to perform automated mechanical diagnosis of a car's brake system. The diagnostic process is performed by using the Generic Tasks of Hierarchcial Classiication and Routine Recognition. A classiication hierarchy is used to represent the possible malfunctions of a car's brake system. The two Generic Tasks are used to traverse the malfunction hierarchy in an atte...