Predictive PID

Miller, Randy; Shah, Sirish L.; Wood, R. K.; Kwok, Ezra

doi:10.1016/s0019-0578(98)90041-6

Cited by 42 publications

(16 citation statements)

References 9 publications

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“…To compensate time delay and to achieve tuning of the predictive PID, the performance of which is equivalent to the simplified GPC, we introduced the internal model G MP . G MP is a multistep long-range predictor presented by Miller et al [4,5]. Fig.…”

Section: The Multistep Long Range Predictor G Mpmentioning

confidence: 99%

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A new predictive PID controller for the processes with time delay

Lee

Yeo

2009

Korean J. Chem. Eng.

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A new proportional-integral-derivative (PID) controller is proposed based upon a simplified generalized predictive control (GPC) control law. The tuning parameters of the proposed predictive PID controller are obtained from the simplified GPC control law for the 1 st -order and 2 nd -order processes with time delays of integer and non-integer multiples of the sampling time. The internal model technique is employed to compensate the effect of time delay of the target process. The predictive PID controller is equivalent to the PI controller when the target process is 1 st -order and to the PID controller when the target process is an integrating process. The performance of the proposed predictive PID controller is almost the same as that of the simplified GPC. The main advantage of the proposed control scheme over other control methods is the ease of tuning and operation. INTRORUCTIONNumerous advanced control techniques are developed and utilized in various control areas. But proportional-integral-derivative (PID) controllers are still the choice of most industrial companies because of the many advantages such as simplicity of implementation, robustness, wide applicability and familiarity of plant engineers [1]. It is obvious that the parameters of PID controllers should be tuned according to the process dynamics in order to maintain acceptable control performance. But most PID controllers implemented in many industries are tuned by experienced engineers using the trial-and-error method. This tuning method requires considerable time and cost. In particular, for the control of a process with time delay or showing nonminimum phase behavior, the PID controller should be retuned adaptively to maintain the stability of the control system. Therefore a tuning method is required which determines on-line optimal PID parameters based on the input and output operation data. Clarke et al. [2,3] presented the generalized predictive control (GPC) scheme which predicts the process outputs over the time range greater than the maximum time delay of the process. The GPC method, also known as a self-tuning controller, has the capability of controlling nonminimum phase or unstable processes by employing analytical solution procedures. But the large amount of cost and time as well as the non-familiarity of the process engineers to the complicated control method limit the application of the GPC scheme.To overcome these difficulties and maintain typical advantageous characteristics of PID and GPC methods, many design methods for PID controllers by using the GPC strategy have been proposed so far. Miller et al. [4,5] presented a predictive PID controller based on the GPC with steady state weighting. Kwok et al. [6] suggested the use of the augmented PID control scheme with multiple PID blocks to apply the GPC method. Moradi et al.[7] defined a PIDtype control structure which predicts the process outputs and recalculates new future set points. This type of the predictive PID controller maintains the basic structure of the PID scheme famil...

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Section: The Multistep Long Range Predictor G Mpmentioning

confidence: 99%

“…Miller et al [4,5] presented a predictive PID controller based on the GPC with steady state weighting. Kwok et al [6] suggested the use of the augmented PID control scheme with multiple PID blocks to apply the GPC method.…”

Section: Introructionmentioning

confidence: 99%

A new predictive PID controller for the processes with time delay

Lee

Yeo

2009

Korean J. Chem. Eng.

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“…There are some studies related to hybrid MPCs. For example, to overcome stochastic disturbances and time delays, an internal model PID controller based on the Generalized Predictive Control (GPC) was developed in [22]. Afterwards, a different PID type controller which can be used for systems of any order based on the GPC was introduced [23].…”

Section: Introductionmentioning

confidence: 99%

A novel auto-tuning PID control mechanism for nonlinear systems

Çetin

İplikçi

2015

ISA Transactions

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“…Amongst these are the predictive tuning methods such as [6,9,10,12,14,15], to name a few. However, these tunings are tailored to specific PID structures and are hard to generalize, reducing its practicality in situations where embedded control is desired, i.e.…”

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confidence: 99%

Pseudo Predictive Tuning Methods for PLC Embedded PID Controllers

Jeronymo¹,

Araújo²,

Suárez³

et al. 2016

Proceeding Series of the Brazilian Society of Computational and Applied Mathematics

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Abstract. In this paper novel tuning settings for Proportional-Integral-Derivative (PID) controllers are proposed. These tunings are based on approximations of the generalized predictive controller (GPC) resulting in pseudo predictive PID controllers. It is possible in this way to embed industrial PID controllers as predictive controllers without hardware changes being necessary. In order to obtain this pseudo predictive tuning the PID structure is matched to the GPC structure and approximations are taken in the cases where the structures are not equivalent. A first order model implies in a PI while a second order model in a PID controller designs, respectively. Depending on which tuning is used, either set-point tracking or closed-loop characteristics is favored. Future work will include results and comparisons of the proposed tuning with other methods from literature.

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Predictive PID

Cited by 42 publications

References 9 publications

A new predictive PID controller for the processes with time delay

A new predictive PID controller for the processes with time delay

A novel auto-tuning PID control mechanism for nonlinear systems

Pseudo Predictive Tuning Methods for PLC Embedded PID Controllers

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