Browsing Research Articles (Electrical, Electronic and Computer Engineering) by Subject "Observability"

Browsing Research Articles (Electrical, Electronic and Computer Engineering) by Subject "Observability"

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  • An EKF observer to estimate semi-autogenous grinding mill hold-ups 
    Le Roux, Johan Derik; Steinboeck, A.; Kugi, A.; Craig, Ian Keith (Elsevier, 2017-03)
    A non-linear observer model of a semi-autogenous grinding mill is developed. The observer model distinguishes between the volumetric hold-up of water, solids, and the grinding media in the mill. Solids refer to all ore ...
  • Observable dynamic models of reagent effects for model based froth flotation control 
    Venter, Jaco-Louis; Le Roux, Johan Derik; Craig, Ian Keith (Elsevier, 2022)
    This article demonstrates the feasibility of including simple reagent addition models in an existing observable dynamic model of a froth flotation circuit. The existing model has full state observability and parameter ...
  • Requirements for estimating the volume of rocks and balls in a grinding mill 
    Le Roux, Johan Derik; Craig, Ian Keith (Elsevier, 2017-07)
    This study aims to indicate which measurements are required in order to estimate the volume of rocks and balls in a semi-autogenous grinding mill as two separate states. The nonlinear observer model used here includes the ...
  • Semi-global finite-time observers for nonlinear systems 
    Shen, Yanjun; Xia, Xiaohua (Elsevier, 2008-12)
    It is well known that high gain observers exist for single output nonlinear systems that are uniformly observable and globally Lipschitzian. Under the same conditions, we show that these systems admit semi-global and ...