Brake booster and method for its operation

摘要

A regulatable brake booster and to a method and a control unit for operating same. Using the method for operating the brake booster, as well as the embodiment of the brake booster, a reaction on a driver may be avoided or reduced by an offset of the brake pedal or by a changed operating force in response to a change in the supporting force. The change in the supporting force is particularly an adjustment of the braking effect of an hydraulic braking system to the braking effect of a regenerative braking system.

主权项

1. A method for operating a regulatable brake booster of a hydraulic braking system, the method comprising:
applying, using the brake booster, a supporting force to an output element of the brake booster to achieve a desired output force for a given input force applied to an input element; and when the desired output force changes for the given input force from a first output force to a second output force, deriving a revised supporting force to be applied as a function of (i) a first piece of information describing an elasticity of at least one elastic element, which is located between the input element of the brake booster and the output element, (ii) a second piece of information regarding a pressure-volume characteristics curve of the hydraulic braking system, and (iii) the given input force applied by the driver, which is applied to the input element, wherein the revised supporting force is derived so that a response of the input element to the driver's input force remains unchanged when the applied supporting force is set to the revised supporting force; and setting the applied supporting force to the revised supporting force.