1,721,352 research outputs found
PID control education for computer engineering students: A step to bridge a cultural gap
No full textAn MSc-level course on ICT for Control Systems Engineering
No full textThe paper presents a course titled “ICT for Control Systems Engineering”, started this year at the Politecnico di Milano and based on preliminary experiences described in previous works. The main goal of this newly designed course is to fill a gap between methodological control education and the typical content of control technology courses. After a discussion about the said gap, the mentioned preliminary experience and the reasons why the result of the above was the presented course, its pedagogical objectives and contents are illustrated. Software support for the course is also described in its present state, that is expected to evolve along future editions
AUTOMATIC TUNING OF PID REGULATORS IN PRESENCE OF MODEL PERTURBATIONS NEAR THE DESIRED CLOSED-LOOP CUTOFF
No full textA method for the automatic tuning of PID regulators is presented. The proposed technique relies on the closed-loop identification of two points of the plant Nyquist diagram, and is specifically aimed at improving robustness against model perturbations with significant effects near the desired cutoff frequency. This is achieved by means of convenient tuning formulae, which allow one to impose some control on the direction along which the open-loop Nyquist diagram will cross the unit circle. Also, attention is paid so as to achieve low computational effort and moderate tuning time
Autotuning Process Controller with Improved Load Disturbance Rejection
No full textThis paper presents an autotuning process controller aimed at providing efficient rejection of load disturbances in a class of situations that are quite typical in process control, and not easy to treat with most standard autotuning controllers, especially when not only the duration of the load disturbance response, but also the peak deviation of the controlled variable is an issue. The regulator structure is not fixed a priori; this is a peculiarity with respect to the main research stream on autotuning regulators, that refers essentially to fixed-structure (PID) regulators. Both simulation and laboratory examples are reported, to show the advantages of the proposed autotuning controller
A Hands-on Experimental Laboratory for Undergraduate Courses in Automatic Control
No full textAn experimental laboratory for undergraduate courses in automatic control has been created at the Politecnico di Milano, Milano, Italy, to provide students with an environment where theoretical concepts can be applied, and the "look and feel" of a real-world problem, though small and simple, can be experienced. The laboratory is meant both for the basic course, titled Fundamentals of Automatic Control, and for advanced ones. Peculiar to the setup is the large number of students involved, with 72 experimental workstations being managed simultaneously. This paper describes the design, implementation, and use of the laboratory until now, dealing with the present experimental setup and the integration of laboratory assignments and lectures
Performance and Robustness Improvement in the IMC-PID Tuning Method
No full textThis manuscript presents an extension of the IMC-PID tuning method. A higher-order structure is adopted for the process model than in the original method, where a FOPDT (First-order Plus Dead Time) model is used. Then, the general IMC procedure is applied, and the so obtained regulator is approximated with a (real) PID. Simulations and experimental results indicate that abandoning the FOPDT structure in the IMC approach is beneficial both in terms of performance and robustness
A PID Auto-tuning Method Improving Robustness against Model Perturbations near the Cutoff Frequency
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