| 1. |
- Demaziere, Christophe, 1973, et al.
(författare)
-
Open self-paced introductory course in nuclear engineering – How to guarantee student learning
- 2024
-
Ingår i: Nuclear Engineering and Design. - 0029-5493. ; 417
-
Tidskriftsartikel (refereegranskat)abstract
- Ease of access to various free educational resources on the internet has often the disadvantage of resulting in scattered and fragmented knowledge and skills. Students “pick and choose” what they believe to be relevant for their learning but lack the necessary overview of the field to select those resources adequately and properly. This also applies to nuclear engineering, for which educational materials can be found on the web. Although some Massive Open Online Courses exist in this area, access to those often requires registration, or those courses are given during limited times. Following the Open Educational Resources initiative, there was thus a need to develop educational materials that are truly open and freely accessible to all, while guaranteeing student learning. This paper reports on efforts along those lines, which resulted in the planning, development, implementation and offering of three self-paced open course modules in nuclear engineering. Through a careful course design and use of the various features of a specific educator-to-educator Learning Management System, the students are guided through highly structured course materials capitalizing on a diversity of activities proposed to the students. Through self-assessment competence tests, the students can measure their mastery of the field, ultimately resulting in the delivery of a certificate of successful completion of the modules. This paper also presents, from a teacher’s perspective, some lessons learnt that could benefit other teachers interested in embarking on similar endeavours.
|
|
| 2. |
|
|
| 3. |
|
|
| 4. |
|
|
| 5. |
- Fransson, Carl-Magnus, 1976, et al.
(författare)
-
Non-conservative robust control: Optimized and constrained sensitivity functions
- 2009
-
Ingår i: IEEE Transactions on Control Systems Technology. - 1063-6536 .- 1558-0865. ; 17:2, s. 298-308
-
Tidskriftsartikel (refereegranskat)abstract
- An automated procedure for optimization of proportional–integral–derivative (PID)-type controller parametersfor single-input, single-output (SISO) plants with explicit modeluncertainty is presented. Robustness to the uncertainties is guaranteedby the use of Horowitz–Sidi bounds, which are used asconstraints when low-frequency performance is optimized in anonconvex but smooth optimization problem. In the optimization(and hence the parameter tuning), separate criteria are formulatedfor low-, mid-, and high-frequency (HF) closed-loop properties.The tradeoff between stability margins, control signals, HF robustness,and low-frequency performance is clarified, and the finalparameter choice is facilitated. We use a combination of globaland local optimization algorithms in the TOMLAB optimizationenvironment and obtain robust convergence without relying ongood initial estimates for the controller parameters. The methodis applied to a controller structure comparison for a plant with anuncertain mechanical resonance and a plant with uncertain timedelay and time constants. For a given control activity, stabilitymargin, and HF robustness, it is shown that a PID controller witha second-order filter and an controller based on loop-shapingachieve approximately the same low-frequency performance.
|
|
| 6. |
|
|
| 7. |
|
|
| 8. |
|
|
