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PID or Not PID? That Is the Question.
Adolescent medicine (Philadelphia, Pa.)A 14-year-old female was seen for acute abdominal, back, and flank pain, accompanied with dysuria, increased frequency of urination, nausea, and decreased appetite. After an initial diagnosis of pyelonephritis, a presumptive diagnosis of pelvic inflammatory disease (PID) was made. The cervical culture was positive for Chlamydia trachomatis and a pelvic
, Levine, , Alvear, , Scarsella, , Rudy
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IFAC Proceedings Volumes, 1982
Abstract The appearance in the market of the first PID self-tuning (PID/ST) controller (see Cont. Eng. Oct. 1981) reflects the necessity of the industry to satisfy increasingly stringent control objectives which can only be attained with adaptive algorithms. The newer trends of the relatively mature adaptive control theory i.e.
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Abstract The appearance in the market of the first PID self-tuning (PID/ST) controller (see Cont. Eng. Oct. 1981) reflects the necessity of the industry to satisfy increasingly stringent control objectives which can only be attained with adaptive algorithms. The newer trends of the relatively mature adaptive control theory i.e.
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Conservative Management of PID
Annals of the New York Academy of Sciences, 2000Abstract: The goals in the management of pelvic inflammatory disease (PID) are not only treatment of the infection and prevention of immediate complications, but also prevention of its long‐term consequences. There are criteria for hospitalization, but patients who do not meet them can be safely treated as outpatients.
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On a Modification of the PID Controller
Dynamics and Control, 1997The paper considers the controlled system \[ x^{(n)}+ a_nx^{(n-1)}+ \cdots + a_2x' +a_1x =u(t) \] and the finite-memory controller \[ u= -c_1 \bigl(x(t) -x_d(t)\bigr)-c_2 \bigl(x'(t) -x_d'(t) \bigr)- c_3\int^t_{t- \sigma} \bigl(x (\tau)- x_d(\tau) \bigr)d \tau \] \(x_d(t)\) being the reference signal. This controller is shown to have several advantages
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2005
This chapter looks at predictive PID ...
Johnson, M.A., Moradi, M., Katebi, M.R.
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This chapter looks at predictive PID ...
Johnson, M.A., Moradi, M., Katebi, M.R.
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Development and Analysis of a PID Controller and a Fuzzy PID
2019This document presents the development of a Proportional Integral Derivative (PID) and a Fuzzy-PID, for the control of the level of the MPS PA plant, which is constituted by industrial sensors and actuators. The mathematical model and the parameters of the system were obtained using the software the MATLAB environment using a STM32F4 card.
Morelva Saeteros +3 more
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Simple PID Tuning and PID Closed-Loop Simulation
1983 American Control Conference, 1983This work presents simple tuning relationships for PID controllers, both continuous (analog or microprocessor) and discrete (computer), that have proven effective for processes with significant dead time. A dynamic simulator package that has been used effectively for PID controller tuning experimentation, verification, and engineer training is ...
D. M. Bain, G. D. Martin
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ISA Transactions, 2007
In this paper, an index for measuring fragility of proportional integral derivative (PID) controllers is proposed. This index relates the losses of robustness of the control loop when controller parameters change, to the nominal robustness of the control loop. Furthermore, it defines when a PID controller is fragile, nonfragile or resilient.
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In this paper, an index for measuring fragility of proportional integral derivative (PID) controllers is proposed. This index relates the losses of robustness of the control loop when controller parameters change, to the nominal robustness of the control loop. Furthermore, it defines when a PID controller is fragile, nonfragile or resilient.
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A Reconfigurable PID Controller
2018We survey the Proportional-Integral-Derivative (PID) controller variants and we switch them in runtime via reconfiguration, as the control requirements change. Depending on the PID variant, e.g. P, I, PI, PD, PID, PI-PD, the involved computations to produce the control output are different.
Sikandar Khan +3 more
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CSTR Control Using IMC-PID, PSO-PID, and Hybrid BBO-FF-PID Controller
2018A hybrid control approach (BBO-FF) based PID is used for optimal control of a non linear system, i.e., CSTR and this hybrid approach is compared with conventional Z-N tuned PID, IMC-PID, and another optimal control method PSO-PID. The aim of this study is to find an optimal controller for nonlinear process control systems and to achieve best desired ...
Neha Khanduja, Bharat Bhushan
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