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Method for providing corrected pressure reference value for servo-controlled proportional valve, involves generating corrected pressure reference value using pressure reference value and correction value for given pressure reference value

A technology of pilot pressure and pilot valve, applied in the direction of fluid pressure actuation device, valve operation/release device, valve device, etc., can solve problems such as residual adjustment deviation and increase

Active Publication Date: 2012-07-11
ROBERT BOSCH GMBH
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Problems solved by technology

However, the limit pressure set by the pressure rating will increase with the increase of the main volume flow rate, so the pilot pressure valves that can adjust the back pressure of the main piston have "residual regulation deviation" in the isobaric characteristic curve, which is mainly are caused by flow dynamics, and ultimately (if this is the case) can only be intervened in a structurally altered manner

Method used

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  • Method for providing corrected pressure reference value for servo-controlled proportional valve, involves generating corrected pressure reference value using pressure reference value and correction value for given pressure reference value
  • Method for providing corrected pressure reference value for servo-controlled proportional valve, involves generating corrected pressure reference value using pressure reference value and correction value for given pressure reference value
  • Method for providing corrected pressure reference value for servo-controlled proportional valve, involves generating corrected pressure reference value using pressure reference value and correction value for given pressure reference value

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Embodiment Construction

[0126] The same or similar reference numerals denote the same or similar elements in the figures described below. The figures, their descriptions, and the dependent claims also contain numerous features in combination. It is obvious to a person skilled in the art that these features can also be observed individually or they can also be combined into other combinations not explicitly described here. In addition, different dimensions and dimensions are used to explain the present invention in the following description, but the present invention should not be understood as being limited to these dimensions and dimensions. Furthermore, it is also possible to perform the method steps described in the present invention repeatedly and in a sequence different from that described. If a certain embodiment includes an "and / or" relationship between the first feature / step and the second feature / step, it can be understood that the embodiment described in one of the implementation modes not...

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Abstract

The method involves detecting the pilot pressure actual value (pX) of the pilot pressure and determining the electrical input signal (UD) using the pilot pressure actual value and the corrected pressure reference value. The correction value for given pressure reference value is determined using the electrical input signal and the pilot pressure actual value. The corrected pressure reference value is generated using the given pressure reference value and the correction value. Independent claims are included for the following: (1) device for providing corrected pressure reference value for servo-controlled proportional valve; and (2) computer program product for providing corrected pressure reference value for servo-controlled proportional valve.

Description

technical field [0001] The present invention relates to a method of providing a corrected pressure rating for a pilot-operated proportional valve, a method of controlling a pilot-operated proportional valve, an apparatus for providing a corrected pressure rating for a pilot-operated proportional valve, and A corresponding computer program product. Background technique [0002] A common pilot-operated proportional valve has a pilot valve and a main valve, and the pilot valve is connected to the main valve through a pressure line. Pilot valves control the pressure in a pressure line in response to an electrical input signal. The input signal to the pilot valve is generated by adjusting the pressure setpoint using the measured pressure in the pressure line, which linearizes the ratio of pilot pressure to main volumetric flow through the main valve. However, the limit pressure set by the pressure rating will increase with the increase of the main volume flow rate, so the pilot...

Claims

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Application Information

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IPC IPC(8): F16K31/122
CPCF15B2211/528G05D16/2013G05D16/2093F15B2211/50536F15B2211/5753F15B19/002G05D16/2097
Inventor G·肖佩尔W·福尔珀特
Owner ROBERT BOSCH GMBH
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