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Dades generals

Curs acadèmic:
2021
Descripció:
Mecanismes: Creativitat i síntesi de solucions. Geometria. Moviment. Transmissió de forces.
Crèdits ECTS:
5

Grups

Competències

  • CT15 Utilitzar la llengua anglesa
  • CE22 Coneixement i capacitats per al càlcul, disseny i assaig de màquines.

Continguts

1. Mechanism synthesis.

2. Introduction to spherical and spatial mechanisms.

3. Mechanism balancing.

4. Cam design.

5. Robotics.

Activitats

Tipus d’activitat Hores amb professor Hores sense professor Hores virtuals amb professor Total
Elaboració individual de treballs 0 34,00 0 34,00
Prova d'avaluació 2,00 8,00 0 10,00
Sessió participativa 18,00 20,00 22,00 60,00
Sessió pràctica 4,00 10,00 6,00 20,00
Total 24,00 72,00 28,00 124

Bibliografia

  • Attaway, Stormy (2012). MATLAB: a practical introduction to programming and problem. . Recuperat , a http://cataleg.udg.edu/record=b1316377 Catàleg
  • Blanding, Douglass L (1999 ). Exact constraint : machine design using kinematic principles . New York: ASME. Catàleg
  • Eckhardt, Homer D (1998 ). Kinematic design of machines and mechanisms . New York [etc.]: McGraw-Hill. Catàleg
  • Erdman, Arthur G (1991- ). Mechanism design : analysis and synthesis (2nd ed.). Englewood Cliffs: Prentice Hall. Catàleg
  • Erdman, Arthur G (1998 ). Diseño de mecanismos : análisis y síntesis . México, D. F. [etc.]: Prentice Hall. Catàleg
  • Howell, Larry L (cop. 2001 ). Compliant mechanisms . New York [etc.]: John Wiley & sons. Catàleg
  • Lent, Deane (1974 ). Análisis y proyecto de mecanismos . Barcelona: Reverté. Catàleg
  • Norton, Robert L (cop. 2002 ). Cam design and manufacturing handbook . New York: Industrial Press. Catàleg
  • Russell, Kevin. (2014). Mechanism design :. Boca Raton, FL: CRC Press Taylor & Francis Group LLC CRC Press is an imprint of Taylor & Francis Group an Informa business. Catàleg
  • Waldron, Kenneth J (cop. 1999 ). Kinematics, dynamics, and design of machinery . New York [etc.]: John Wiley & Sons. Catàleg

Avaluació i qualificació

Activitats d'avaluació:

Descripció de l'activitat Avaluació de l'activitat % Recuperable
Mechanism model building. Some mechanism model will be built individually by the students. The model must be dimensioned according to the techniques presented in the course, must correctly perform the task and have a nice appearance. 30 No
Exercise discussion and solving. The capability of the students to solve problems and exercises will be evaluated individually with proposed problems and exercises to be delivered using the Moodle interface. 20 No
Laboratory and computer room sessions. Session reports will be presented in groups to show that the concepts and skills experienced and practiced in the lab sessions have been correctly understood and learned. 20 No
Individual final exam. Exercises solved individually. 30 No

Qualificació

As this is a presential course, the student is advised to regularly attend the sessions. Attendance controls will be carried out during the theory, exercises and lab sessions.

The grading of each activity will be done as follows:

1) Model building (MBU):
Each model will be evaluated according to the correct use of the theory, the accuracy of the model in accomplishing the proposed task and the appearance of the model. The average grade of the model will be called MBU.

2) Exercise solving (CAE):
Some exercises will be asked to do along the sessions of the course. The average grade will be called CAE. The students will work individually. The exercices must be submitted by the student using Moodle tasks (reports must be submitted in pdf format) before a specific deadline. Peer assessment will be mainly used, although the professor can assume grading of any task as required.

3) Lab/computer sessions continuous assessment (LCR):
Reports on each of the lab/computer sessions will be delivered by the students' teams. The grade is shared by the group but, if idle members are detected, they will be excluded from the group mark.

4) Final exam (FE):
A final exam with exercises and questions similar to the ones practiced during the course will give a specific individual grade to every student.

Every task of the 1,2 or 3 type will have a delivery deadline after which they will not be accepted.

The final grade will be:

FG = 0.25*MBU+0.25*CAE+0.2*LCR+0.30*FE

Criteris específics de la nota «No Presentat»:
The student will get a "No Presentat (NP)" grade if he/she doesn't sit at the final exam and does not participate in any of the continuous assessment activities (LCR and/or CAE) or abandons them before the seventh week of the course.

Avaluació única:
If the student applies to be graded in a single activity, he/she will have to come in the date scheduled for the final exam and take an exam that will basicaly be the same of the other students, although it can also include some questions covering the contents of the LCR and CAE activities.

Requisits mínims per aprovar:
To pass the course you need a minimum grade of FG = 5.0.

Tutoria

There will be specified weekly time frames for on-line tutorships on-demand (via GoogleMeet or any other platform approved by UdG). Electronic mail can be also used to solve questions or doubts and set tutorship appointments out of the specified time frames.

Comunicacio i interacció amb l'estudiantat

Communication with students will be via e-mail and the News forum of the course’s Moodle. Individual on-line meetings will be possible for a personalised monitoring.

Observacions

Lab/Computer room sessions:
Four of the sessions will be done in a computer room using MATLAB/SIMULINK, WORKING MODEL 2D or SOLIDWORKS.

Language: The Moodle site of this course will contain enough information for the student to follow the contents and do the programmed activities. This documentation will be in English. Teaching, however, will be done in Catalan.

If possible, the models to be built will be actuated using simple drives and the Arduino platform.

Although the students are not supposed to master programming in MATLAB, some exercises will require the modification of MATLAB scripts to fulfill some calculation or simulation.

Assignatures recomanades

  • Càlcul de mecanismes
  • Teoria de màquines

Modificació del disseny

Modificació de les activitats:
If the evolution of the pandemic results in a more restricted scenario, if possible, computer on-line activities will substitute the on-site Lab sessions. Also, the exercise on-site sessions will move to on-line sessions or tutorials. The model building activity will be cancelled.

Modificació de l'avaluació:
In case of a more restricted scenario, the model building activity will be cancelled and the grading weights and formula will be changed to:

1) Exercise solving (CAE):
Some exercises will be asked to do along the sessions of the course. The average grade will be called CAE.

2) Lab/computer sessions continuous assessment (LCR):
Reports on each of the lab/computer sessions will be delivered by the students' teams. The grade is shared by the group but, if idle members are detected, they will be excluded from the group mark.

3) Final exam (FE):
A final exam with exercises and questions similar to the ones practiced during the course will give a specific individual grade to every student.

Every task of the 1,2 or 3 type will have a delivery deadline after which they will not be accepted.

The final grade will be:

FG = 0.35*CAE+0.30*LCR+0.35*FE

Tutoria i comunicació:
If the evolution of the pandemic results in a more restricted scenario, the course will become totally on-line but with the same terms and conditions.

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