​​ Faculty of Computing, Engineering and the Built Environment Coursework Assessment Brief Academic Year 2015-16 Module: ENG 7034 Control PG Assessment Title: Control Coursework Assessment Identifier: CWRK001 Weighting: Weighting 50 % School: Engineering, Design and Manufacturing Systems Module Co-ordinator: Dr M S Srai Assessment Details and Deadlines: See YourCourse ( iCity.bcu.ac.uk/yourcourse ) Assessment Summary Modelling, Simulation and Control of a Transmission System IMPORTANT STATEMENTS Cheating and Plagiarism Both cheating and plagiarism are totally unacceptable and the University maintains a strict policy against them. It is YOUR responsibility to be aware of this policy and to act accordingly. Please refer to the Academic Registry Guidance at https://icity.bcu.ac.uk/Academic-Registry/Information-for-Students/Assessment/Avoiding-Allegations-of-Cheating The basic principles are: • Don't pass off anyone else's work as your own, including work from "essay banks". This is plagiarism and is viewed extremely seriously by the University. • Don't submit a piece of work in whole or in part that has already been submitted for assessment elsewhere. This is called duplication and, like plagiarism, is viewed extremely seriously by the University. • Always acknowledge all of the sources that you have used in your coursework assignment or project. • If you are using the exact words of another person, always put them in quotation marks. • Check that you know whether the coursework is to be produced individually or whether you can work with others. • If you are doing group work, be sure about what you are supposed to do on your own. • Never make up or falsify data to prove your point. • Never allow others to copy your work. • Never lend disks, memory sticks or copies of your coursework to any other student in the University; this may lead you being accused of collusion. By submitting coursework, either physically or electronically, you are confirming that it is your own work (or, in the case of a group submission, that it is the result of joint work undertaken by members of the group that you represent) and that you have read and understand the University's guidance on plagiarism and cheating. Students should be aware that, at the discretion of the module co-ordinator, coursework may be submitted to an electronic detection system in order to help ascertain if any plagiarised material is present. Electronic Submission of Work Students should also be aware that it is their responsibility to ensure that work submitted in electronic format can be opened on a faculty computer and to check that any electronic submissions have been successfully uploaded. If it cannot be opened it will not be marked. Any required file formats will be specified in the assignment brief and failure to comply with these submission requirements will result in work not being marked. Students must retain a copy of all electronic work they have submitted and resubmit if requested. Learning Outcomes to be Assessed: 1 Critically appraise classical and modern control strategies and techniques based upon the principles of linear systems design in terms of their impact on design and implementation 2. Design advanced control algorithms and implement these in software/hardware and use computer tools to verify and/or model performance of the controlled system. Assessment Details: See below Assessment Criteria: Enter a description of the assessment criteria Table of Assessment Criteria and Associated Grading Criteria Assessment Criteria  1. 2. 3. 4. Weighting: 25% 25% 25% 25% Grading Criteria 0 – 29% No serious attempt No serious attempt No serious attempt No serious attempt 30 – 39% Application of Newton II Parameters estimated Only 1 control strategy offered Only 1 strategy appraisal 40 – 49% Conversion to state form Iteration of parameters Rudimentary strategies only Rudimentary appraisals 50 – 59% Justification of state variables Parameters justified Methodologies also presented Comparison of stability criteria 60 – 69% Correct derivation Validation via simulation Relative Stability Criteria achieved Comparison of control effort 70 – 79% Statement of assumptions Discussion of plausibility Iterations presented Discussion of implementation 80 – 100% Discussion of Limitations Parameter value obtained Gearshift/uncon-strained solution Appropriate referencing Checklist (i) (ii) (iii) (iv) Submission Details: Too be submitted via Moodle Workload: up to 4000 words/40 hours Feedback: Marks and Feedback on your work will normally be provided within 20 working days of the submission deadline. Assessment Details: Transmission Control A schematic diagram of a transmission system is shown below in Fig. 1: Figure 1: Multivariable Sliding Mode Response Defining states:- x1 = - driveshaft torsion angle (rad) x2 = - engine rotational speed (rad/sec) x3 = - wheel rotational speed (rad/sec) (i) Show that a state space model of the system can be formulated as below from application of Newton s 2nd Law for engine and wheel motions, under input engine torque u, and road disturbance torque l, where: A = B = H = and where the simplified model parameters are defined as follows i = overall driveline gear ratio J1 = Mass moment of inertia on the engine side of the transmission J2 = Mass moment of inertia on the wheel side of the transmission d = Driveshaft damping coefficient d1 = Transmission viscous damping coefficient d2 = Final drive viscous damping coefficient k = Driveshaft stiffness (ii) Estimate or obtain the parameters defined above and simulate the system under typical driving conditions of your choice that demonstrate the plausibility of the model formulated. (iii) From a transmission control perspective, formulate a control strategy to achieve stated transient and steady-state performance requirements. (iv) Demonstrate and appraise the performance of the controller