公开(公告)号：US20240028023A1

公开(公告)日：2024-01-25

申请号：US18042277

申请日：2021-08-13

Applicant: Samson Aktiengesellschaft

Inventor： Christian FIEBIGER ,  David WAGNER-STÜRZ

IPC: G05B23/02

CPC classification number: G05B23/0275

Abstract: In a method for diagnosing control system of a process engineering plant having a plurality of actuating units for setting a process fluid and a central unit, at least one actuating-unit-specific control raw datum, such as a setpoint value, an actual value, a setpoint-actual difference value, or a control value, is detected; a particularly local diagnosis code is generated by one of the plurality of actuating units based on the at least one detected control raw datum; the diagnosis code is transmitted from the actuating unit to a central unit; a local diagnosis code, is transformed into a global diagnosis codes; a logical condition for a diagnosis deduction logic is defined such that when the logical condition is applied to at least one diagnosis code, the diagnosis deduction logic determines a predetermined deduction result; and a deduction result is determined based on the at least one diagnosis code.

公开(公告)号：US20230279966A1

公开(公告)日：2023-09-07

申请号：US18040400

申请日：2021-07-27

Applicant: SAMSON AKTIENGESELLSCHAFT

Inventor： David WAGNER-STÜRZ

IPC: F16K37/00 ,  F16K31/126

CPC classification number: F16K37/0083 ,  F16K31/1262 ,  F16K37/0041

Abstract: The invention relates to a method for detecting a spring breakage in a preloaded drive of a control valve. The method is based on the fact that the pressure which must be applied to achieve a certain valve member position falls significantly after the breakage or failure of the spring. The breakage of a spring in a preloaded drive can thus be detected reliably using the sensor system already present in the control valve, moreover without having to disrupt or interrupt operation.