发明名称 |
SYSTEM AND METHOD FOR HEATLH MONITORING OF SERVO-HYDRAULIC ACTUATORS |
摘要 |
A method of health monitoring of a hydraulic actuator includes sensing a first hydraulic fluid pressure at a first chamber of a hydraulic cylinder, the first chamber defined by a piston disposed in the cylinder and a first cylinder wall. The method further includes sensing a second hydraulic fluid pressure at a second chamber of the hydraulic cylinder, the second chamber defined by the piston and a second cylinder wall opposite the first cylinder wall. The pressures are summed to derive a pressure sum leakage estimate. An actual piston position in the hydraulic cylinder is determined and compared to an intended piston position to determine a positional error of the piston. A command-response error leakage estimate is derived from the positional error. The pressure sum leakage estimate and the command-response error leakage estimate are fused to determine an internal hydraulic fluid leakage in the hydraulic cylinder. |
申请公布号 |
WO2015153727(A3) |
申请公布日期 |
2015.11.26 |
申请号 |
WO2015US23819 |
申请日期 |
2015.04.01 |
申请人 |
SIKORSKY AIRCRAFT CORPORATION |
发明人 |
SMITH, MATTHEW J.;KLODA, JARED;FRIEL, JASON;HETTLER, ERIC |
分类号 |
G05B23/02 |
主分类号 |
G05B23/02 |
代理机构 |
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代理人 |
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地址 |
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