METHOD AND DEVICE FOR MONITORING INDUCED PROPERTIES OF A MIXTURE OF COMPONENTS, IN PARTICULAR EMISSION PROPERTIES

摘要

A method for monitoring properties of a mixture M of n components is provided. The mixture has properties x(B, u), where u is a recipe vector, B is a matrix of the properties of the n components, and x(u) is a vector of the k properties of the mixture M. The mixture also has at least one emission property representative of a product emitted by the mixture during the use thereof. The method includes monitoring the recipe u such that the resulting mixture M complies with specifications for each emission property. The monitoring includes estimating an emission property of mixture M of properties determined beforehand.

主权项

1. A method for monitoring the properties of a mixture M of n solid, liquid or gaseous constituents, said mixture exhibiting:
properties x(B, u) where x(u)=[x1, . . . xk] is a vector of k properties of the mixture M, k a non-zero positive integer, u=[u1, . . . un] is a recipe vector and ui, i=1, . . . , n, indicates the proportion of the ith constituent in the mixture M, B=[B1, . . . , Bn] is a matrix of the properties of the n constituents,
at least one property R(u)=R(y(x(u)), z(x(u))) induced by the properties x(B, u), where z(x(u))=y(x(u))−x(u) y(x(u)) is a vector of properties of the mixtureand where y(x(u)) and z(x(u)) are such that they comply with disjunctive conditions which, for each property xk, allocate to yk at least one value chosen from among xk, mk, Mk, as a function of one or more inequalities between said value xk and at least one value mk, Mk, where mk, Mk are predefined constants and xk is the value of the property k for a recipe u,characterized in that said method comprises the following steps:(A) the properties x(u) of the mixture M are determined,(B) the at least one induced property R(u) of the mixture M is estimated, R(u) being dependent:
on a set of predetermined properties x(u) of the mixture on the functions y(x(u)) and z(x(u)) associated with these predetermined properties, said functions being formulated so that, for each property xk considered, y(xk) and z(xk) are functions of S(xk, r) where:S(xk,r)=0.5·(1+sign(xk-r))(1)sign(xk-r)={-1xk≤r1xk>r(2)r being equal to mk or Mk,(C) a recipe u is determined so that at least one previously estimated induced property Rj, j=1, . . . , q (with q a non-zero positive integer) of said mixture M obtained complies with specifications Rj≦Rj(u) and/or Rj(u)≦Rj, Rj, Rj being minimum and maximum admissible values, respectively, of said induced property Rj,(D) at least one signal for control of means for distributing the constituents of the mixture M is generated as a function of the determined recipe u,(E) said at least one control signal is transmitted to the means for distributing the constituents so as to obtain a mixture M.