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7903 results about "Failure rate" patented technology

Failure rate is the frequency with which an engineered system or component fails, expressed in failures per unit of time. It is usually denoted by the Greek letter λ (lambda) and is often used in reliability engineering.

Extensible bayesian network editor with inferencing capabilities

A system for the representation, editing, evaluation, and inference of graphical models is disclosed which can be used to construct and evaluate a graphical model or graphical network and to calculate inference values. An efficient method of updating graphical models is demonstrated, and provides the basis for an improved system for manipulation and evaluation of probabilistic models. The graphical network editor is useful in the construction of graphical modes such as Bayesian Networks. The graphical network and network graphical user interface (GUI) are used in conjunction with each other to model a system wherein failure probabilities and the current state of components are taken into account to monitor the health and progress of a system for an engineer or engineering software to evaluate and monitor. The evaluation is useful in the monitoring of assets and other real systems having multiple, dependent, and independently operating components such as a pump, a manufacturing plant, a production line, an assembly line, where asset health and quality control is a concern. The asset components each influencing some overall outcome of a system or situation. Success or failure or probability of success, probability of failure and health of the system can be monitored and manipulated by altering the values of prior probability and posterior probability values. Failure correlation between components can be evaluated wherein failure rates of asset is unknown. Production and quality can be monitored and altered.

Master-slave integrated mechanical arm for assisting minimally invasive surgery

The invention discloses a master-slave integrated mechanical arm for assisting minimally invasive surgery. A master operating end of the mechanical arm comprises a master hand joint I seat provided with a rotatable master hand joint I shaft; the output end of the master hand joint I shaft is connected with a master hand joint II seat; the master hand joint II seat is internally provided with a rotatable master hand joint II shaft which is fixed with a telescopic frame; an upper telescopic seat is connected with a lower telescopic seat by a linear mechanism; a slave operating end comprises a base part connected with the master operating end, a driving mechanical arm part connected with the base part and a telescopic part installed on the driving mechanical arm. A tool clamping end comprises a surgical instrument seat installed on a slide block of a slave hand telescopic part; the upper surface and the lower surface of the surgical instrument seat are respectively fixedly connected with two ends of a transmission screw and can move in a straight line along the guide rail of the slave hand telescopic seat under the traction of the transmission screw. By utilizing the device, the system structure is simplified and the system volume and the failure rate are reduced.

Method for assessing lightning flashover risks of regional power grid lines

ActiveCN102854415AComprehensive and detailed evaluation resultsElectrical testingFailure rateLightning strike
The invention discloses a method for assessing the lightning flashover risks of regional power grid lines, which comprises the following steps that: through calculating the lightning-resistant level of each base rod tower and combining with a probability distribution function of lightning current amplitudes of a region, the lightning trip-out rate of each rod tower is obtained, and the average lightning trip-out rate of a line is calculated; then, through combining with an automatic reclosing failure rate and a failure rate of manual forced energization, a permanent failure rate of the line is obtained; and through considering the weight coefficient of the line in a power grid structure, the permanent failure load loss coefficient of the line at the specific time of a power grid and in an specific operation mode of the power grid, and the risk occurrence probability of other influencing factors, a lightning flashover risk assessment model of a regional power transmission grid is established. According to the invention, the shortcoming that the absolute numerical value of the lightning trip-out rate can not really reflect the lightning disaster risk level of each line is overcome, and the lightning flashover risk level of each rod tower of lines is assessed through comprehensively considering the differences among the lightning motions, topographical features, line structures, insulation configuration, lightning protection measures and the like of each line corridor in the power grid, so that more comprehensive and thorough assessment results are obtained.

Quick internet payment method and system

InactiveCN102880959AMeet fast and convenient payment needsSolve the high failure rate of paymentPayment protocolsThird partyFailure rate
The invention provides a quick internet payment method and system. The quick internet payment method comprises the following steps: correcting the necessary transaction parameters included in a payment request after receiving the payment request of the user by a quick internet payment platform; ending the payment process if the necessary transaction parameters are not sufficient; sending the short message with the dynamic authentication password to the user by the quick internet payment platform, authenticating whether the user submits the right dynamic authentication password in the preset time or not, and ending the payment process if the user does not submit the right dynamic authentication password in the preset time; sending the payment request to an internet bank platform through a bank gateway interface, and returning the bank payment result to the user. On the basis of the scheme of the invention, the user does not need to additionally register the account of the payment company of the third party and finishes the payment process by inputting the dynamic authentication password of the short message without logging in after binding the bank card. The problems of more payment links, high paying failure rate due to complex process and poor user experience in the prior art are solved.
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