METHOD AND APPARATUS FOR ROBUST TUNING OF MODEL-BASED PROCESS CONTROLLERS USED WITH UNCERTAIN MULTIPLE-INPUT, MULTIPLE-OUTPUT (MIMO) PROCESSES
    1.
    发明申请
    METHOD AND APPARATUS FOR ROBUST TUNING OF MODEL-BASED PROCESS CONTROLLERS USED WITH UNCERTAIN MULTIPLE-INPUT, MULTIPLE-OUTPUT (MIMO) PROCESSES 审中-公开
    用于不确定多输入多输出(MIMO)过程的基于模型的过程控制器的鲁棒调谐的方法和装置

    公开(公告)号:WO2016191849A1

    公开(公告)日:2016-12-08

    申请号:PCT/CA2016/000153

    申请日:2016-05-18

    CPC classification number: G05B13/048 G05B2219/2646

    Abstract: A method includes obtaining information identifying (i) uncertainties associated with multiple time-domain parameters of a model (202) and (ii) time- domain performance specifications for a model-based industrial process controller (104, 204). The model mathematically represents a MIMO industrial process (210). The method also includes generating multiple tuning parameters for the controller based on the uncertainties and the time-domain performance specifications. The tuning parameters include vectors of tuning parameters associated with the controller, and each vector includes values associated with different outputs of the industrial process. The time-domain parameters could include a process gain, a time constant, and a time delay for each input-output pair of the model. The time-domain performance specifications could include requirements related to worst-case overshoots, settling times, and total variations. The uncertainties could be specified as intervals in which the time-domain parameters lie.

    Abstract translation: 一种方法包括获得识别(i)与模型(202)的多个时域参数相关联的不确定性的信息和(ii)基于模型的工业过程控制器(104,204)的时域性能规范。 该模型在数学上表示MIMO工业过程(210)。 该方法还包括基于不确定性和时域性能规范为控制器生成多个调谐参数。 调谐参数包括与控制器相关联的调谐参数的向量,并且每个向量包括与工业过程的不同输出相关联的值。 时域参数可以包括模型的每个输入 - 输出对的过程增益,时间常数和时间延迟。 时域性能规格可能包括与最坏情况超调,建立时间和总体变化有关的要求。 不确定性可以被指定为时域参数所在的时间间隔。

    METHOD AND APPARATUS FOR DESIGNING MODEL-BASED CONTROL HAVING TEMPORALLY ROBUST STABILITY AND PERFORMANCE FOR MULTIPLE-ARRAY CROSS-DIRECTION (CD) WEB MANUFACTURING OR PROCESSING SYSTEMS OR OTHER SYSTEMS

    公开(公告)号:WO2018161148A1

    公开(公告)日:2018-09-13

    申请号:PCT/CA2018/000046

    申请日:2018-03-02

    Abstract: A method includes obtaining (902) a model (304) associated with a model-based controller (104, 306) in an industrial process (100, 302) having multiple actuator arrays (114, 116, 118, 120) and performing (914) temporal tuning of the controller. The temporal tuning includes adjusting one or more parameters of a multivariable filter (308) used to smooth reference trajectories of actuator profiles of the actuator arrays. The temporal tuning could also include obtaining (904) one or more uncertainty specifications for one or more temporal parameters of the model, obtaining (916) one or more overshoot limits for the actuator profiles, identifying (918) a minimum bound for profile trajectory tuning parameters, and identifying (920) one or more of the profile trajectory tuning parameters that minimize one or more measurement settling times without exceeding the one or more overshoot limits. The controller could be configured to use the adjusted parameter(s) during control of the industrial process such that the adjusting of the parameter(s) alters operation of the controller and the industrial process.

    METHOD AND APPARATUS FOR DESIGNING MODEL-BASED CONTROL HAVING SPATIAL ROBUSTNESS FOR MULTIPLE-ARRAY CROSS- DIRECTION (CD) WEB MANUFACTURING OR PROCESSING SYSTEMS OR OTHER SYSTEMS

    公开(公告)号:WO2018161147A1

    公开(公告)日:2018-09-13

    申请号:PCT/CA2018/000045

    申请日:2018-03-02

    Abstract: A method includes obtaining (902) one or more models (304) associated with a model-based controller (104, 306) in an industrial process (100, 302) having multiple actuator arrays (114, 116, 118, 120) and performing (906) spatial tuning of the controller. The spatial tuning includes identifying weighting matrices that suppress one or more frequency components in actuator profiles of the actuator arrays. The spatial tuning could also include finding (908) a worst-case cutoff frequency over all output channels for each process input, designing (910) the weighting matrices to penalize higher-frequency actuator variability based on the model(s) and the cutoff frequencies, and finding (912) a multiplier for a spatial frequency weighted actuator variability term in a function that guarantees robust spatial stability. The controller could be configured to use a function during control of the industrial process, where a change to one or more terms of the function alters operation of the controller and the industrial process and at least one term is based on the weighting matrices.

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