filter factor


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filter factor

[′fil·tər ‚fak·tər]
(optics)
The number of times the exposure must be increased when a filter is used on a camera, because the filter absorbs some of the light.
References in periodicals archive ?
The dirty filter factor multiplier is based on the manufacturer recommendation to replace the air filters at three times the initial pressure drop.
where [i.sub.q.sup.*] is the current given the quadrature axis, [z.sub.11] is the tracking signal for [i.sub.q.sup.*], [r.sub.0] is the velocity factor, [h.sub.0] is the filter factor, and [r.sub.0] and [h.sub.0] are used to arrange the speed of the transient process.
Component of Parameter name Symbol Numerical improved ADRC value TD Velocity factor [r.sub.0] 10 Filter factor [h.sub.0] 0.02 Traditional ESO Nonlinear factor [[alpha].sub.0] 1 Nonlinear factor [[alpha].sub.1] 0.5 Linear interval width [[delta].sub.1] 0.01 Gain coefficient [[beta].sub.1] 60 Gain coefficient [[beta].sub.2] 1200 Traditional NLSEF Nonlinear factor [[alpha].sub.2] 0.5 Filter factor [[delta].sub.2] 0.01 Gain coefficient [[beta].sub.3] 75 DCD Compensation [b.sub.0] 1 coefficient Table 3: Parameters of the improved ADRC.
To regularize the problem, we then filter out the contributions to the solution corresponding to the smallest singular values by using the filter factor [phi].
To emphasize the role of the regularization parameter [alpha] in the calibration procedure, we introduce in this section the concept of filter factors through the use of the Singular Value Decomposition [15].
where [z.sub.1] is the tracking signal of y; [z.sub.2] is the estimation value of disturbance; [[alpha].sub.1], [[alpha].sub.2] are nonlinear factors; [delta] is filter factor; [[beta].sub.01], [[beta].sub.02] are the parameters; and fal (e, [alpha], [delta]) is nonlinear function:
where [[delta].sub.1] is filter factor and [[alpha].sub.3] is nonlinear factor.
Let M(x) denote the number of data units which contain x and then the filter factor is denoted by ff(x) = 1 - M(x)/N, where N means the total number of data units.
In Section 2 we define the filter factor of the classical Landweber method, while Section 3 contains a concise description of the TL method (a prototype of the multigrid-type regularizing methods in [5]) and the derivation of its filter factor.
A filter factor of 1 was used, meaning that the base data acquisition time of 8 ms per data point is used for all measurements.
and those who look at you quizzically when you even say the words 'social networking.'" He recounts how they addressed issues such as The Filter Factor and The Fear Factor with some degree of success, in part by shifting the conversation to focus on academic networking.
Henderson-Betkus and MacLeod (2004) found the relationship between job satisfaction, community satisfaction, and the decision to leave or stay is interrupted by a number of "filter factors".