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Fault detection, isolation and reconfiguration systems and methods for controlling electrohydraulic systems used in construction equipment

  • US 9,163,387 B2
  • Filed: 03/05/2012
  • Issued: 10/20/2015
  • Est. Priority Date: 03/03/2011
  • Status: Active Grant
First Claim
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1. A control system for controlling a hydraulic actuation system of a construction vehicle, the control system comprising:

  • a supervisory controller adapted to interface with a main controller of the construction vehicle, the supervisory controller being at a supervisory control level of the hydraulic actuation system;

    a plurality of control nodes that interface with the supervisory controller, the control nodes including pressure and position sensors, the plurality of control nodes including;

    a first actuator control node for controlling operation of a first hydraulic actuator;

    a second actuator control node for controlling operation of a second hydraulic actuator;

    a pump control node; and

    wherein the control system has a fault detection architecture in which faults are detected within the control nodes at;

    a) a sensor level;

    b) a component level; and

    c) a subsystem level.

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