Dynamic braking

About: Dynamic braking is a research topic. Over the lifetime, 3472 publications have been published within this topic receiving 34897 citations. The topic is also known as: Rheostatic brake.

Regenerative braking controller for vehicle

Abstract: PROBLEM TO BE SOLVED: To provide a regenerative braking controller for vehicles that makes it possible to stabilize the behavior of a vehicle despite split μ road braking when the vehicle is in a state of steering intended for straight running and regenerative braking is applied only to either the front wheels or the rear wheels. SOLUTION: A vehicle is so constructed that a generator is coupled with the left and right wheels of only either the front wheels or the rear wheels. The vehicle is provided with a regenerative braking controlling means that actuates the generator based on deceleration requesting operation and thereby carries out regenerative braking. When the vehicle is in a state of steering intended for straight running and regenerative braking is applied only to either the front wheels or the rear wheels, the regenerative braking controlling means limits the amount of regenerative braking, when a situation in which a difference in regenerative braking is produced between the left and right wheels coupled with the generator and the road surface is detected. COPYRIGHT: (C)2006,JPO&NCIPI

Brake system having pump to start by forecast of braking

Abstract: In a brake system of a vehicle adapted to be operated automatically, the brake system includes a forecasting mechanism for forecasting a need of automatic braking, and a pump to provide a source of a pressurized working fluid for the automatic braking is started when a need of an automatic braking is forecast. By such a need forecast starting of the pump, the brake system can automatically apply an effective braking to a vehicle wheel or wheels, with no accumulator for storing the pressurized working fluid. The pump need forecasting may depend upon an estimation of a turn behavior of the vehicle and/or a detection of an obstacle in front of the vehicle.

Aerodynamic braking device for high-speed trains: Design, simulation, and experiment

Abstract: This paper proposes the design of an aerodynamic braking device for a high-speed train. The design is based on the parameters of the high-speed train and the working principles of airplane wings. T...

Integrated control of electromechanical braking and regenerative braking in plug-in hybrid electric vehicles

Abstract: This paper proposes the use of Electromechanical Brakes (EMB) in combination with regenerative braking in PHEV so braking force can be distributed to front and rear axles according to an optimal curve instead of a linear line. Therefore, more braking force will be distributed to front axle, which will offer more kinetic energy for regenerative braking. Fuzzy logic control is used to allocate braking force between regenerative braking and electromechanical braking. The paper also studies antilock braking control of EMB to maintain safety and stability of a vehicle using sliding-mode control with switching gain fuzzy adjusting.

Enhanced human-machine interface in braking

Abstract: Antilock brake system (ABS) technology with powerful electronic components has shown superior braking performance to conventional vehicles on test tracks. On real highways, however, the performance of the ABS-equipped car has been disappointing. The poor braking performance with ABS has resulted from the questionable design of the human-machine interface for the brake system. The goal of this study is to design brake systems that provide more intuitive brake control and proper braking-performance information for the driver. In this study automotive brake systems are modeled as a type of master-slave telemanipulator. Human force-displacement interaction at the brake pedal has a strong effect on braking performance. As a preliminary study in brake-system design, the characteristics of human leg motion and its underlying motor-control scheme are studied through experiments and simulations, and a model of braking motion by the driver's leg is developed. This paper proposes novel brake systems based on two new aspects. First, the mechanical impedance characteristics of the leg action of the driver are taken into consideration in designing the brake systems. Second, the brake systems provide the driver with kinesthetic feedback of braking conditions or performance. The effectiveness of the proposed designs in a combined driver-vehicle system is investigated using driving simulation.