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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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Journal Article
TL;DR: In this paper, the authors employed a dynamic neural network to predict the influence of brake operation conditions on the generation of stick-slip phenomena during a braking cycle, and the model of influences of the disc brake operation condition on contact phenomena generation and 'nature' of braking torque change.
Abstract: An interaction between a brake disc and friction material of automotive brake is characterized by a number of braking phenomena. These phenomena are influenced by brake operation conditions (applied pressure, speed, and brake interface temperature) and material characteristics of a friction couple. The dynamic and highly non-linear changes occurred in the contact of the friction pair, provokes hard-to-predict change of braking torque as the most important brake's output performance. Complex disc brake contact situation is causing sudden change of braking torque and could not be easily modeled and predicted using classical mathematical methods. That is why, the possibilities for development of the method for prediction of influence of braking regimes on generation of the stick-slip phenomena during a braking cycle has been investigated in this paper. Dynamic neural networks have been employed for development of the model of influences of the disc brake operation conditions on contact phenomena generation and 'nature' of braking torque change.

15 citations

Patent
28 May 1992
TL;DR: In this paper, a power wheelchair (10) includes wheels (12a and 12b) that are reversibly driven by electric motors (24a and 24b) included in respective ones of electric motor drives (170).
Abstract: A power wheelchair (10) includes wheels (12a and 12b) that are reversibly driven by electric motors (24a and 24b) included in respective ones of electric motor drives (170). The electric motor drives (170) provide driving voltage pulses (142) of a pulse-width-modulated driving voltage (144) to respective ones of the motors 24a and 24b), and the electric motor drives (170) provide dynamic braking pulses (150) that are interposed intermediate of respective ones of the driving voltage pulses (142). The maximum width (146) of the driving voltage pulses (142) is selectively adjusted by a removable speed control knob (46) that is connected to a pair of ganged maximum speed potentiometers (48), thereby adjustably determining the maximum speed of the conveyance (10). The maximum torque of the power wheelchair (10) is selectively adjusted by a removable torque control knob (50) that is connected to a pair of ganged torque enhancement controls (52). Torque enhancement is achieved by sampling torque of each of the motors (24a and 24b) during a selected portion (190) of constant time periods (148) of the pulse-width-modulated driving voltage (144). Sampling of motor torque is done subsequent to a dynamic braking pulse (150) and prior to a driving voltage pulse (142) in a delay (164) for a portion (190) of a constant time period (148).

15 citations

Patent
28 Jan 1974
TL;DR: In this article, a dynamic motor brake circuit for alternating current induction motor is presented, in which the rotor for the motor is braked through the application of half-wave rectified AC power through a silicon controlled rectifier which is controllably energized to conduct over portions of the respective half cycles to vary the braking current to the stator field windings.
Abstract: A dynamic motor brake circuit for alternating current induction motor in which the rotor for the motor is braked through the application of half-wave rectified AC power through a silicon controlled rectifier which is controllably energized to conduct over portions of the respective half cycles to vary the braking current to the stator field windings. The braking contactors and the rectifying means are controlled through a sequenced time control circuit means which limits and sequences the application of rectified power to the motor in accord with the adjustment of the time control means. The improved dynamic braking control includes means of coupling the stator windings to the control circuit to indicate a condition of application of AC power to the stator field windings for the purpose of conditioning the brake control circuit for operation.

15 citations

Journal ArticleDOI
TL;DR: An anti-skid control algorithm is presented that achieves a very similar closed-loop behaviour to that experimentally experienced, and the performance of the controller are quantitatively analysed according to cost functions that are standards in the aeronautic braking systems evaluation.

15 citations

Patent
11 Feb 1988
TL;DR: In this article, an additional braking device is attached to a bicycle for retarding a bicycle having a braking system, which is adapted to be locked in a cable traction position, and a force limiting device is positioned between the brake and the additional brake for adjusting the additional braking devices.
Abstract: A device for retarding a bicycle having a braking system, the device incls an additional braking device independent of the braking system of the bicycle. A brake is associated with the additional braking device and a traction lever is provided for controlling the additional braking device which is adapted to be locked in a cable traction position. Transmission control cable is connected between the traction lever and the brake for controlling the additional braking device, and a force limiting device is positioned between the lever the additional brake for adjusting the additional braking device.

15 citations


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