Invention Grant
- Patent Title: Electrohydraulic pressure control arrangement and method for pressure control
- Patent Title (中): 电液压力控制装置及压力控制方法
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Application No.: US13040683Application Date: 2011-03-04
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Publication No.: US08634967B2Publication Date: 2014-01-21
- Inventor: Georg Schoppel , Roland Gerhart
- Applicant: Georg Schoppel , Roland Gerhart
- Applicant Address: DE Stuttgart
- Assignee: Robert Bosch GmbH
- Current Assignee: Robert Bosch GmbH
- Current Assignee Address: DE Stuttgart
- Agency: Maginot, Moore & Beck
- Priority: DE102010010506 20100306
- Main IPC: G05D16/00
- IPC: G05D16/00

Abstract:
An electrohydraulic pressure control arrangement comprises a proportional pressure valve and a control loop structure. The control loop structure has a control path through which an actuating variable is fed to an actuating input of the proportional pressure valve starting from a setpoint pressure value. A pressure sensor detects an actual pressure value at a connection of the proportional pressure valve. A system model of a pressure valve assigns an estimated pressure value to the setpoint pressure value, and a subtraction element determines a control error as the difference between the estimated pressure value and the actual pressure value. A weighting element subjects the control error to a weighting operation and thus determines a weighted control error. The weighting element is designed such that relatively large control errors are attenuated to a greater extent than relatively small control errors.
Public/Granted literature
- US20120022704A1 Electrohydraulic pressure control arrangement and method for pressure control Public/Granted day:2012-01-26
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