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    • 8. 发明申请
    • Apparatus and Methods for Non-Invasive Closed Loop Step Testing Using a Tunable Trade-Off Factor
    • 使用可调整折衷因子进行非侵入性闭环步进测试的装置和方法
    • US20130204403A1
    • 2013-08-08
    • US13760949
    • 2013-02-06
    • Aspen Technology, Inc.
    • Qingsheng Quinn ZhengMagiel J. Harmse
    • G05B13/02
    • G05B13/022G05B13/048
    • An integrated multivariable predictive controller (MPC) and tester is disclosed. The invention system provides optimal control and step testing of a multivariable dynamic process using a small amplitude step for model identification purposes, without moving too far from optimal control targets. A tunable parameter specifies the trade-off between optimal process operation and minimum movement of process variables, establishing a middle ground between running a MPC on the Minimum Cost setting and the Minimum Move setting. Exploiting this middle ground, embodiments carry out low amplitude step testing near the optimal steady state solution, such that the data is suitable for modeling purposes. The new system decides when the MPC should run in optimization mode and when it can run in constrained step testing mode. The invention system determines when and how big the superimposed step testing signals can be, such that the temporary optimization give-away is constrained to an acceptable range.
    • 公开了一种综合多变量预测控制器(MPC)和测试仪。 本发明系统提供了用于模型识别目的的小幅度步长的多变量动态过程的最佳控制和步长测试,而不会偏离最佳控制目标。 可调参数指定了最佳过程操作与过程变量的最小移动之间的权衡,建立了在最小成本设置上运行MPC和最小移动设置之间的中间位置。 利用这个中间点,实施例在最优稳态解决方案附近进行低幅度步长测试,使得数据适合建模目的。 新系统决定MPC何时运行在优化模式下,以及何时可以在受限步骤测试模式下运行。 本发明系统确定叠加的步骤测试信号的何时以及可能有多大,使得临时优化赠送被限制在可接受的范围内。
    • 9. 发明授权
    • Perturbation test method for measuring output responses to controlled process inputs
    • 用于测量对控制过程输入的输出响应的扰动测试方法
    • US07499763B2
    • 2009-03-03
    • US11458522
    • 2006-07-19
    • Simon P. HansonMurray F. Abbott
    • Simon P. HansonMurray F. Abbott
    • G05B13/02G01D3/00G01M19/00G01M17/00G01R35/00G06F19/00
    • G05B13/022
    • The present invention is a method for determining the optimum operating practice for an industrial process. The methodology includes a combination of process control steps and data analysis techniques to investigate responses to controlled “black box” process inputs, e.g., coal and air feeds for coal-fired furnaces in the case studies above. A unique time-dependent perturbation is applied to individual process feed streams to give a signature in the data that permits the filtering and detection of various measured responses, e.g., continuous emission monitor readings for NOx, SO2, CO2, CO, and opacity for regulated electric utility furnaces. The perturbation is implemented using the plant control system. Individual control signal set points are perturbed for each piece of equipment supplying process inputs of interest. As a result, complex commercial processes can be evaluated for optimization without changing the normal configuration of the system.
    • 本发明是用于确定工业过程的最佳操作实践的方法。 该方法包括过程控制步骤和数据分析技术的组合,以调查对受控的“黑箱”过程输入的反应,例如在上述案例研究中的燃煤炉的煤和空气进料。 独特的时间依赖扰动被应用于个别的过程进料流,以便在允许过滤和检测各种测量响应的数据中进行签名,例如用于NO x,SO 2,CO 2,CO和不透明度的连续排放监测器读数用于调节 电力炉。 扰动是使用工厂控制系统实现的。 对于提供感兴趣的过程输入的每个设备的设备,扰动个别控制信号设定点。 因此,可以对复杂的商业流程进行评估,而不改变系统的正常配置。
    • 10. 发明公开
    • CONTROL SYSTEM THAT BEST FOLLOWS PERIODICAL SETPOINT VALUE
    • REGELUNGSSYSTEM,DAS AM BESTEN EINEM PERIODISCHEN SOLLWERT FOLGT。
    • EP0333870A1
    • 1989-09-27
    • EP88907821.8
    • 1988-09-06
    • KABUSHIKI KAISHA YASKAWA DENKI SEISAKUSHO
    • NAKAMURA, Hiroshi K.K. Yaskawa Denki SeisakushoFUTAMI, Shigeru K.K. Yaskawa Denki Seisakusho
    • G05B13/00
    • G05B13/026G05B13/022G05B13/0225G05B21/02
    • A control system employing an algorithm in which the control quantity is so determined as to best follow a periodi­cal setpoint value that repeats the same pattern possessed by a control object (13) relying only upon the arithmetic opera­tion by correcting the amount for each of the sampling using deviations of one period before and subsequent M samplings, using the present deviation, past increments of a number of N-1, operation quantity of one period before, and a predeter­mined quantity, or employing an algorithm in which the control quantity best follows a setpoint value wherein the control input for each sampling time is so determined that the sum of weighted squares of estimated values of future control devia­tions will become a minimum by using control deviations of each of the present and past periods, past increment, data (in­dicial response) related to dynamic characteristics of the control object, control input of one period before, and related da­ta.
    • 控制量被确定为最好地遵循周期性设定点值,该周期性设定点值重复仅依赖于算术运算的控制对象(13)拥有的相同模式,通过使用在之前和之后的一个周期的偏差来校正每个采样的量 使用当前偏差的M个采样,N-1个数的过去增量,一个周期的操作量和预定量。 或者,采用一种算法,其中控制量最好地遵循设定点值,其中每个采样时间的控制输入被如此确定,即通过使用每个采样时间的控制偏差,将来控制偏差的估计值的加权平方和将变为最小值 当前和过去期间的过去增量,与控制对象的动态特性相关的数据(指标响应),前一个时期的控制输入以及相关数据。