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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.


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Patent
23 Jan 1998
TL;DR: In this article, the authors used a two-axle chassis dynamometer to check the magnitude of the regenerative braking force in an electric vehicle with front and rear wheels hydraulically braking.
Abstract: In an electric vehicle having front wheels braked by regenerative braking and hydraulic braking and rear wheels hydraulically braked, it is possible to check the magnitude of the regenerative braking force easily and accurately, by using a two-axle chassis dynamometer. Assuming that the front wheel braking force F 2 ' detected by the chassis dynamometer is the total braking force C 2 ' of the front and rear wheels, the total braking force C2' is broken down into component forces according to braking force distribution ratio data previously stored in a memory, to calculate a reference regenerative braking force A 2 'D 2 '. Based on the actually detected pedal depressing force A 2 and the distribution ratio data, an imaginary pedal depressing force A 2 ' is calculated that is required to produce a total braking force of the driven wheels and follower wheels equal to the braking force F 2 ', generated by the driven wheels in the actual pedal depressing force A 2 . Based on the imaginary pedal depressing force A 2 ' and the distribution ratio data, the imaginary regenerative braking force A 2 'D 2 ' that is produced by the driven wheels in the imaginary pedal depressing force A 2 ', is calculated and then compared with the reference regenerative braking force A 2 'D 2 '.

25 citations

Patent
22 Nov 1996
TL;DR: A trailer braking control system for incorporation into the braking equipment of a towing vehicle for providing a trailer braking command signal which is also regulated as to balance the braking between the vehicle and the trailer through the assessment of forces (Fv, Fh) in the coupling between the two vehicles as mentioned in this paper.
Abstract: A trailer braking control system for incorporation into the braking equipment of a towing vehicle for providing a trailer braking command signal which is also regulated as to balance the braking between the towing vehicle and the trailer through the assessment of forces (Fv, Fh) in the coupling between the two vehicles. The assessment is made indirectly and is calculated from forces measured in the suspension components of at least two axles of the towing vehicle (Ff, Fr) and the changes occurring therein during braking (dFf, dFr).

25 citations

Patent
22 Dec 1986
TL;DR: In this paper, a dynamic brake control circuit provides dynamic braking for slowing and stopping an associated tape reel and motor system in the event of a power failure, and the electrical energy stored in a capacitor supplies electrical energy to enable the control circuit, which in turn supplies a controlled conductive path for the flow of a dynamic braking current due to the back electromotive force signal generated by the motor.
Abstract: In a tape drive system, a dynamic brake control circuit provides dynamic braking for slowing and stopping an associated tape reel and motor system in the event of a power failure. Upon sensing a power failure, the electrical energy stored in a capacitor supplies electrical energy to enable the control circuit, which in turn supplies a controlled conductive path for the flow of a dynamic braking current due to the back electromotive force signal generated by the motor, to effect the controlled dynamic braking of the drive motor to a stop.

25 citations

Journal ArticleDOI
TL;DR: In this article, a mathematical model for the in-plane dynamic analysis of motorcycles is presented and the performance during an emergency braking manoeuvre is analyzed and the effects of braking torque amplitude and time constant are discussed and the problems of lockup and loss of contact of the rear wheel are highlighted.
Abstract: A mathematical model for the in-plane dynamic analysis of motorcycles is presented and the performance during an emergency braking manoeuvre is analysed. The effects of braking torque amplitude and time constant are discussed and the problems of lock-up and loss of contact of the rear wheel are highlighted. The suspensions' vibrations during braking are analysed by means of modal analysis. An optimisation method is developed in order to find the braking torque and the suspension parameters that minimise the stopping distance. The method takes the complete dynamic behaviour of the vehicle during braking into account and is based on a non-derivative minimisation algorithm. Several results are presented that show the possibility of shortening the stopping distance by optimum design of one or both of the suspensions.

25 citations

Patent
10 Jul 2014
TL;DR: In this paper, a self-learning regenerative control system that adapts to the user's driving style was proposed, where the system receives as input a signal that is indicative of the friction brake usage and adapts the degree of regenerative braking accordingly.
Abstract: The invention relates to a self-learning regenerative control system that adapts to the user's driving style. The system receives as input a signal that is indicative of the friction brake usage and adapts the degree of regenerative braking accordingly. When the friction brake usage is high, the system will make the regenerative braking more aggressive such that when the user lifts-off the foot from the accelerator pedal, the degree of regenerative braking will be higher, thus reducing the need to use friction brakes. The system continuously adapts the regenerative braking intensity based on driving style, road conditions, etc.

24 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202376
2022156
20216
202018
201925
201834