4 results about "Parameter dependent" patented technology

A table workflow checking method, device, medium, equipment and program product, relating to the technical field of computer, can realize small range checking of the workflow in the database table, and improve the checking efficiency of the workflow. The table workflow checking method comprises: in response to a node configuration operation of the workflow, determining a configured first node, the workflow being an automated process created in the table, and the node of the workflow being used for processing data of the table; determining a second node having a dependency relationship with an output parameter of the first node according to node dependency information of the workflow, wherein the node dependency information represents the dependency relationship between the input parameters and the output parameters of different nodes in the workflow; and checking the second node according to the node dependency information to obtain a first checking result, wherein the first checking result represents whether the output parameter dependent on the input parameter of the second node is consistent with the node dependency information.

A method of monitoring the torsion of a rotating shaft on an aircraft turbine engine, based on measurements from at least three sensors distributed along the rotating shaft, the at least three sensors dividing the shaft into at least two shaft sections, the method comprising: - for each sensor, a step of measuring a parameter dependent on the rotation of the shaft, - for each pair of achievable sensors, a step of calculating a parameter related to the torsion of the shaft, - a step of comparing the different calculated parameters related to the torsion of the shaft with a reference, - at the end of the comparison step, a step of detecting a damage on a shaft section, and - a step of indicating the positioning of the damage on the shaft from the shaft section for which a damage has been detected.

This invention relates to the field of product reliability analysis technology, specifically to a reliability assessment method for a non-fixed shape parameter dependent competing failure model. The method includes the following steps: constructing a dependent competing failure model, designing an adaptive stepwise type II hybrid truncated constant-load life test, estimating parameter points based on test data, establishing an acceleration equation, calculating product reliability under normal stress, and performing interval estimation. This invention constructs a MOBG distribution description that assumes fixed shape parameters and does not consider the dependencies between unknown failure mechanisms and causes. It designs an adaptive stepwise type II hybrid truncated constant-load life test to obtain data, solves for parameters based on maximum likelihood estimation and Bayesian estimation, and combines the acceleration equation to obtain parameter estimates under normal stress. This leads to the calculation of product reliability and interval estimation, improving the accuracy and applicability of reliability assessment. It is suitable for reliability analysis of various products with multiple failure mechanisms and potentially unknown causes.

The application discloses a reliability evaluation method for a nonlinear random effect parameter related degradation process, obtains sample data; according to the sample data, calculates parameter estimation values of sample distribution; establishes distribution models of various parameters; utilizes the parameter estimation values of the sample distribution and maximum likelihood estimation to calculate various parameters in the distribution models; utilizes a total probability formula to calculate a degradation amount distribution density; after linear change of the degradation amount, T distribution is obtained. According to the T distribution, a confidence interval of the degradation amount is calculated; a failure threshold of degradation is set, and reliability of a product is calculated. The application considers the correlation between parameters in distribution, obtains simple form degradation amount distribution, and reduces reliability evaluation calculation difficulty.