US 5,496,097 A · Process for the adjustment of a braking value to a desired braking value

Abstract

A process and system for attaining a desired braking value is disclosed. The actual braking value is adjusted until the desired braking value is attained. Conventionally the braking hysteresis worsens the response of a brake and, thereby, worsens the quality of the regulation of a braking system with regulated braking value. Known processes reduce the brake application energy in steps if the actual braking value is too great until the braking hysteresis has been overcome and the desired braking value has been attained. Whereas, the present invention decreases the brake application energy ZS by a value (HyS+W) consisting of the braking hysteresis HyS associated with the desired braking value and a effect drop-off W. This decrease occurs in the case of excessive actual braking value BI. The process accelerates the attainment of the desired braking value BS. The preferred area of application for the invention are braking systems in the automotive industry.

Claims13

Dependent claims

A process for adjusting a braking value B to a desired braking value BS in a braking system having at least one brake (12, 13), wherein said braking value B evolves as functions of brake application energy Z for brake actuation and for brake release, and a difference between said brake actuation function V and said brake release function T is a hysteresis Hy of the braking system for a given braking value B, comprising

feeding brake application energy Z to said at least one brake,
producing an actual braking value BI by said braking system as said brake application energy Z is fed to said brake (12, 13), and
decreasing existing brake application energy ZS by a value HyS+W, which comprises hysteresis HyS associated with said desired braking value BS and an effect drop-off W, when the actual braking value BI deviates from the desired braking value BS in the direction of higher braking values B after a rise in said brake application energy Z.

A braking system for adjusting an actual braking value B to a desired braking value BS, comprising

at least one brake (12, 13),
a braking value indicator (2) for emitting an electrical desired-braking value signal,
a braking value sensor (1) for emitting an electrical actual braking value signal,
an electrically controlled energy distributor (11) having a control system (14) and an output connected to said brake (12, 13), and
regulating electronics (4) having a first input connected to said braking value indicator (2) and a second input connected to said braking value sensor (1) and an output connected to said control system (14) of the energy distributor (11), wherein said regulating electronics
compare the actual braking value signal to the desired braking value signal to determine a brake application energy signal,
transmit said brake application energy signal to the control system (14) of the energy distributor (11),
store a hysteresis Hy as a function of the braking value B, and
reduce said brake application energy signal by a value resulting in reduction of existing brake application energy ZS by a value HyS+W, which value comprises hysteresis HyS associated with the desired braking value BS and an effect drop-off W, when a deviation of the actual braking value BI from the desired braking value BS in direction of higher braking values B is detected following a rise in the brake application energy signal.

6 more elements

Dependencies are inferred from the claim text.

Process for the adjustment of a braking value to a desired braking value

Life of this patent

Process for the adjustment of a braking value to a desired braking value

Life of this patent

Abstract

Claims13