Method for detecting internal temperature of heat apparatus

Method for detecting internal temperature of heat apparatus

  • CN 101,660,951 A
  • Filed: 09/21/2009
  • Published: 03/03/2010
  • Est. Priority Date: 09/21/2009
  • Status: Active Application
First Claim
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1. method that detects internal temperature of heat apparatus, this method comprises carries out initialization process to internal temperature of heat apparatus detection problem, pass through initialization process, the initial value of setting refutation process iterations sign k is k=0, but position according to hot equipment temperature range to be detected and detected temperatures interval, that determines heat transfer problem finds the solution zone (Ω

  • ) and border thereof, and this border specifically comprises the first border (Γ

    of given boundary condition 1) and the second border (Γ

    2), this find the solution the zone border (Γ

    to be detected 3), but and this find the solution the Measured Boundary (Γ

    of temperature in zone 4), set up the steady heat conduction process model that this finds the solution the zone, given border (Γ

    to be detected 3) on temperature to be detected Initial guess But with Measured Boundary (Γ

    4) go up the actual measured value (t of the temperature at each measuring point j place j) step ();

    According to known temperature to be detected The k time conjecture value Construct border (Γ

    to be detected 3) boundary condition, adopt numerical solution to find the solution the direct problem of thermal conduction study, but obtain Measured Boundary (Γ

    4) result of calculation (t of temperature ckj) step (two);

    Wherein;

    j=1,2 ..., n;

    I=1,2 ..., n;

    But n is Measured Boundary (Γ

    4) the last temperature point number that is provided with;

    It is characterized in that, on the basis of step () and step (two), also comprise the steps;

    (3) but the Measured Boundary (Γ

    that utilize to obtain 4) result of calculation (t of temperature ckj), but produce Measured Boundary (Γ

    4) go up the temperature error (e at each measuring point j place j), if this temperature error (e j) satisfying the iteration stopping condition, then inverting iterative process finishes, and with aforesaid temperature to be detected The k time conjecture value Testing result as internal temperature of heat apparatus;

    Otherwise, then enter step (four);

    Described iteration stopping condition is Wherein, ε

    is predetermined temperature error threshold value, and ε



    0;

    (4) but for Measured Boundary (Γ

    4) on each measuring point j, be provided with and temperature error (e j) corresponding temperature adjustment component (Δ

    u j), by selection fuzzy subset, fuzzy subset'"'"'s membership function (μ

    ) and fuzzy inference rule, but to Measured Boundary (Γ

    4) go up the temperature error (e at each measuring point j place j) and corresponding temperature adjustment component (Δ

    u j) carry out Fuzzy processing respectively, but set up and Measured Boundary (Γ

    4) go up the one dimension fuzzy reasoning unit group (FR of each measuring point j correspondence 1, FR 2..., FR n), but produce and Measured Boundary (Γ

    through fuzzy reasoning 4) temperature that goes up each measuring point j correspondence adjusts component (Δ

    u j) value;

    (5) determine temperature adjustment component (Δ

    u j) for each measuring point i to be checked place amount of temperature compensation Weights (w Ij), by to this one dimension fuzzy reasoning unit group (FR 1, FR 2..., FR n) temperature of output adjusts component (Δ

    u j) be weighted comprehensively, obtain the amount of temperature compensation of each measuring point i to be checked And utilize this amount of temperature compensation Treat detected temperatures The k time conjecture value Revise, produce temperature to be detected The k+1 time conjecture value (6) temperature to be detected to produce The k+1 time conjecture value Substitute temperature to be detected The k time conjecture value And as finding the solution zone (Ω

    ) border (Γ

    to be detected 3) boundary condition, simultaneously iterations sign k is upgraded, change step (two) over to.

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