374 results about "Residual value" patented technology

A system for empirically diagnosing a condition of a monitored system. Estimates of monitored parameters from a model of the system provide residual values that can be analyzed for failure mode signature recognition. Residual values can also be tested for alert (non-zero) conditions, and patterns of alerts thus generated are analyzed for failure mode signature patterns. The system employs a similarity operator for signature recognition and also for parameter estimation. Failure modes are empirically determined, and precursor data is automatically analyzed to determine differentiable signatures for failure modes.

A method and apparatus are provided for diagnosing faults in a monitored system that is monitored by sensors. An empirical model is generated for a targeted component of the monitored system. The empirical model is trained with an historical data source that contains example observations of the sensors. Substantially real-time estimates are generated based on instrumented data corresponding to the targeted component. The substantially real-time estimates are compared and differenced with instrumented readings from the sensors to provide residual values. The residual values are analyzed to detect the faults and determine a location of the faults in the monitored system.

Crop yield may be assessed and predicted using a piecewise linear regression method with break point and various weather and agricultural parameters, such as NDVI, surface parameters (soil moisture and surface temperature) and rainfall data. These parameters may help aid in estimating and predicting crop conditions. The overall crop production environment can include inherent sources of heterogeneity and their nonlinear behavior. A non-linear multivariate optimization method may be used to derive an empirical crop yield prediction equation. Quasi-Newton method may be used in optimization for minimizing inconsistencies and errors in yield prediction. Minimization of least square loss function through iterative convergence of pre-defined empirical equation can be based on piecewise linear regression method with break point. This non-linear method can achieve acceptable lower residual values with predicted values very close to the observed values. The present invention can be modified and tailored for different crops worldwide.

An article residual value predicting device for accurately predicting the residual value of an article such as a used car. The device, for example, updates a set of basic records including the names of cars, used car prices, new car prices, and the years and months of the used car prices (S2), reads the used car prices and the new car prices, calculates the car residual value ratio actual values as their ratios (S6), performs regression analysis on the basis of the quantification theory type-I by using the car residual value ratio actual values as the response variables and the names of cars and the years and months of the used car prices as the explanatory variables, calculates the category scores (S9), and calculates the car residual value ratio predicted value to be predicted at a future time point as the scores-by-car name + scores-by-year + scores-by-month + constant from the category scores (S13). Prior to the regression analysis, the device carries out weighting processing (S4 to S8), copies the records according to the weights based on the then number of new cars sold, the number of car colors, and the number of records corresponding to them.

An analogue to digital converter (ADC) of the recirculating type is described. In one embodiment, the ADC is composed of three storage and residual determination units, which, in cooperation with an operational amplifier, and suitable comparator means, are operable to re-present residual signals for analogue to digital conversion. To enhance settling at the beginning of a cycle, the first storage and residual determination unit is used once, with remaining recirculation being conducted between the other two storage and residual determination units.Another embodiment presents a recirculating ADC stage which comprises a plurality of capacitor banks operable to be switched into and out of connection with other components of the ADC stage, in order to recirculate residual values for calculation of further bits of a digital output. Each bank comprises a plurality of capacitors, and cooperating switching means for connecting each bank in turn with the other components. The switching means are controlled by timing signals, wherein the switching means for each capacitor in each capacitor bank interpose the same number of switches between that capacitor and fed-back signals to that capacitor as to other capacitors of that bank.