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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
05 Sep 1989
TL;DR: In this paper, a load-dependent braking regulations (ALB) process was proposed, which utilizes components, signal paths and transmitters of an existing anti-lock braking system (ABS) to perform an automatically loaddependent braking function which takes effect well below the locking limit.
Abstract: A process for load dependent braking regulations (ALB) utilizing components, signal paths and transmitters of an existing anti-lock braking system (ABS) to perform an automatically load-dependent braking function which takes effect well below the locking limit. The brake pressure and consequently the brake distribution are controlled by processing only wheel-speed differences as actual values of an electronic brake-pressure controller instead of absolute wheel slips. To compensate for changing load situations and roadway properties, the precontrollable brake-force distribution and the brake-pressure level control triggerable at the pedal are corrected in a self-learning and adaptive manner. The device for carrying out the ALB process consists essentially of a computer and software program using input from the ABS systems. The process according to the invention makes axle-load sensors superfluous.

16 citations

Patent
Jochen Wagner1, Rychlak Stefan1
29 May 2001
TL;DR: In this article, a method of ensuring the braking effect of brake actuators in a vehicle is described, each brake actuator having first and second components for producing braking effect, where films on the first components which would interfere with the deployment of braking effect are removed.
Abstract: A method of ensuring the braking effect of brake actuators in a vehicle is described, each brake actuator having first and second components for producing the braking effect, where films on the first components which would interfere with the deployment of the braking effect are removed. In this method, when an activation condition is met, the brake actuators are activated to remove the films so that the second components are applied to the first components, thereby setting the vehicle deceleration so that little or no deceleration is perceived by the driver. In checking on whether the activation condition is met, a quantity describing operation of the accelerator pedal is taken into account.

16 citations

Patent
28 Nov 1995
TL;DR: In this article, a braking control device for an electric car that runs by driving wheels by an electric motor for controlling the braking of the car through the regenerative braking by the motor is presented.
Abstract: A braking control device for an electric car that runs by driving wheels by an electric motor for controlling the braking of the car through the regenerative braking by the motor in which mechanical braking by a mechanical braking device (11) and regenerative braking by a running motor (2) can be effected in parallel when brakes are applied, the braking control device being characterized in that when the failure of the mechanical braking device (11) is detected by a failure detection means (22), the regenerative braking of the motor (2) is controlled by a regenerative braking control means (12) such that a larger regenerative braking force is applied than when the mechanical braking device (11) is detected as being normal, whereby while the energy loss by the regenerative braking when the mechanical braking device is in a normal condition can be avoided or restrained, it is possible to securely stop the car by properly utilizing the regenerative braking when the mechanical braking device fails.

16 citations

Patent
10 Mar 1999
TL;DR: In this article, a control circuit performs regenerative co-operative control during regenerative braking so that a total braking force does not vary before and after regeneration, and gradually increases fluid pressure to the wheel cylinders of the wheels for which antilock brake control is not carried out.
Abstract: A control circuit performs regenerative co-operative control during regenerative braking so that a total braking force does not vary before and after regenerative braking. If antilock brake control is started on one of the wheels, the control circuit stops regenerative co-operative control, and gradually increases fluid pressure to the wheel cylinders of the wheels for which antilock brake control is not carried out.

16 citations

Patent
19 Jun 1975
TL;DR: In this article, a method and apparatus are disclosed for reducing effective inductance and providing balanced line-to-line voltages in induction machine dynamic braking circuits which utilize braking resistors to substantially increase the full torque braking range of the machine.
Abstract: A method and apparatus are disclosed for reducing effective inductance and providing balanced line-to-line voltages in induction machine dynamic braking circuits which utilize braking resistors to substantially increase the full torque braking range of the machine. The current phase lag caused by the inductive property of conventional braking resistors, is substantially reduced by rectifying the current provided to the braking resistor through a three-phase rectifier bridge. This reduction of the current phase lag permits a reduction in the capacitance required to compensate for the effective inductance in the dynamic braking circuit. Furthermore, because the braking currents flow through a common braking resistor, the line-to-line stator motor voltages are inherently balanced. If the prior art braking impedance control is also employed, the rectifier bridge need carry current only if dynamic braking is required when motor voltage is greater than the maximum voltage of the inverter supplying the machine. Where the braking resistor may be varied in a step-wise manner, the amount of dynamic braking capacitance needed for inductive compensation is reduced below the substantial reduction realized for a non-variable resistor. Depending upon the required degree of performance and the allowable complexity of the braking circuit, the prior art braking impedance control may be eliminated and the effective impedance of the common braking resistor may be varied in either a continuous or a step-wise manner.

16 citations


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