Testing arrangement for antilocking control system with two identical antilocking control units

US4085979A · kind A · utility

Assignee

• Teldix GmbH · DE

Inventors

• Heinz Leiber · Oberriexingen, DE
• Jürgen GERSTENMEIER · Johannisberg, DE
• Hermann Klotz · Schwetzingen, DE

Key dates

• Filing date: Apr 1, 1977
• Grant date: Apr 25, 1978
• Expiry date: Apr 1, 1997

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60T2270/406
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

An antilocking control system for the wheel brakes of a vehicle, which system includes two identically designed control units for various wheels of the vehicle and with each control unit comprising at least one wheel speed sensor, an evaluation circuit for evaluating the output signals from the sensors and for producing control signals and a brake pressure control unit responsive to the control signals from the evaluation circuit, as well as a device for testing the operability of the antilocking control system at desired time intervals. The testing device, upon receipt of a start instruction, simultaneously feeds at least one identical test signal to each of the two control units, and then compares the effect of the test signal on the two control units by comparing output signals from the two control units at given corresponding points in the two control units for at least approximate coincidence with respect to the timely occurrence and/or the magnitude of the signals and generates a control signal, e.g., to switch-off the antilock control system and/or actuate a warning device, if there is a deviation between the two signals being compared which is greater than a given value.