c<nt> <red> and y<nT> (green) versus time <S>. Synchronous command +9.00E+02 +6.00E+02- +3.00E+02-- +0.00E+00- -3.00E+02- -6.00E+02 -9.00E+02+ +0.00E+00 u<T> versus time <S>. 10E+03 +1.40E+03- +7.00E+02- +0.00E+00- -7.00E+02- -1.40E+03- +1.60E+00 +3.20E+00 T.80E+00 +6.40E+00 +8.00E+00 +4.80E+00 Input filter:DISABLED IA UCNT): 9.4823E+04 +6.40E+00 Anti-windup: +8.00E+00 DISABLED ISE: 1.4498E+05 IAE: 2.7856E+04 -2.10E+03+ +0.00E+00 Sampling time : Kp: 4.20000 +1.60E+00 +3.20E+00 0.009920 S de<nT) e<nT>-e<[n-1]> Ki: 0.00000 Kd0.05790 Rectangular integration CLEVERTOUCH <<nT> <red) and y<nT) (green) versus time (S). Synchronous command +9.00E+02 +6.00E+02- +3.00E+02- +0.00E+00- -3.00E+02- -6.00E+02- <-9.00E+02+ +0.00E+00 u<T> versus time <S>. 10E+037 +1.40E+03 +7.00E+02 +0.00E+00 -7.00E+02- -1.40E+03-- +1.60E+00 +3.20E+00 +4.80E+00 +6.40E+00 +8.00E+00 4.80E+00 +6.40E+00 +8.00E+00 Input filter:DISABLED IA u<nT): 7.7403E+04 Anti-windup: DISABLED ISE: 1.2919E+05 IAE: 2.3225E+04 -2.10E+03+ +0.00E+00 Sampling time: 0.009920 Kp 4.20000 +1.60E+00 S +3.20E+00 Ki: 0.00000 Kd: 0.05790 de<T> e<nT)-e<[n-1]T) Rectangular integration CLEVERTONCE HEVAL <<nt> <red) and y<nT> <green) versus time (S). Synchronous command +9.00E+02¬ +6.00E+02- +3.00E+02- +0.00E+00- -3.00E+02- -6.00E+02- -9.00E+02+ +0.00E+00 u<T> versus time (S). 10E+03 +1.40E+03--- +7.00E+02- +0.00E+00 -7.00E+02- -1.40E+03- +1.60E+00 +3.20E+00 44.80E+00 +6.40E+00 +8.00E+00 +8.00E+00 4.80E+00 Input filter:DISABLED IA u<T>: 8.2809E+05 +6.40E+00 Anti-windup: DISABLED ISE: 1.3086E+07 IAE: 2.5275E+05 -2.10E+03+ +0.00E+00 Sampling time : Kp: 3.68000 +1.60E+00 0.100000 S Ki: 0.00000 Kd: 0.15140 Rectangular integration +3.20E+00 de<T>=e<nT>-e<[n-1]T> CLEVERTOUCH CEEUCLM <<nT> <red) and y<T> <green> versus time <S>. Synchronous command +9.00E+02 +6.00E+02- +3.00E+02- +0.00E+00 -3.00E+02- -6.00E+02- -9.00E+02+ +0.00E+00 u<T> versus time <S>. 10E+03- +1.40E+03- +1.60E+00 +3.20E+00 +4.80E+00 +6.40E+00 +8.00E+00 +7.00E+02- +0.00E+00- -7.00E+02 -1.40E+03- -2.10E+03+ +0.00E+00 +1.60E+00 Sampling time: 1.000000 S Kp: 0.18000 Rectangular integration Ki: 0.00000 Kd: 0.00000 de<T>=e<nT>-e<[n-1]) CLEVERTOUCH CEL +3.20E+00 +4.80E+00 +6.40E+00 +8.00E+00 Input filter:DISABLED Anti-windup: DISABLED <<nt) (red) and y(nT> <green) versus time (S). +9.00E+02 Synchronous command +6.00E+02- +3.00E+02 +0.00E+00- -3.00E+02- -6.00E+02- -9.00E+02+ +0.00E+00 u<T> versus time <S>. 10E+037 +1.40E+03- +7.00E+02- +0.00E+00 -7.00E+02- -1.40E+03- -2.10E+03+ +1.60E+00 +3.20E+00 +1.80E+00 +6.40E+00 +8.00E+00 +8.00E+00 14.80E+00 Input filter:DISABLED IA u<nT): 3.1234E+06 +6.40E+00 Anti-windup: DISABLED ISE: 7.1533E+09 IAE: 1.6488E+07 +0.00E+00 +1.60E+00 Sampling time : 1.000000 S Kp 0.18000 +3.20E+00 Ki: 0.00000 Kd: 0.00000 de<nT> e<nT>-e([n-1]> Rectangular integration CLEVERTOUCH CLM/n/n Assessment task details and instructions You will carry out ONE (1) practical laboratory and a hands-on MATLAB/Simulink exercise in Trimester 2, and submit a report on each activity for this assessment. The activities are: Activity 1: Digital Control Design Laboratory Control systems implemented on a digital computer are called digital control systems Digital control systems differ from their analogue counterparts. A fundamental aspect of digital control systems is that they operate in discrete time, not continuous time. Changes to the control output occur at discrete instants in time. These instants are usually regular periodic times, separated by the sampling period Ts [sec]. In this laboratory you will: • use MATLAB for root locus design of three types of controllers for a DC Servo model, namely: proportional controllers, proportional-plus-derivative controllers, and proportional controllers with velocity feedback, . use Simulink to produce step response simulation of each discrete-time system design, and implement each digital controller design on the DC servo. Activity 2: Altitude Hold Autopilot Design Exercise Altitude hold is one of the important pilot-relief modes required in automatic flight control systems for transport aircraft. It allows the aircraft to be held at a fixed altitude in an air corridor, to meet air traffic control requirements. In this hands-on design exercise, you will: . • derive the dynamics model of the elements of an altitude hold autopilot, using given the longitudinal stability and control derivatives data for an aircraft, use MATLAB and the root locus method for a two-stage design of an altitude hold autopilot for the aircraft model use Simulink for pulse and step response simulations of the altitude hold system. Details of equipment for the laboratories, tasks to be completed, and experimental procedures are provided in individual laboratory sheets issued for the three laboratories. The laboratory sheets are on Blackboard. How to submit You should submit your assessment in the Flight Systems E3 Assessment portals in Blackboard Assessed intended learning outcomes On successful completion of this assessment, you will be able to: Knowledge and Understanding Assessment Brief Form 1 A. Digital Control Design Laboratory 1. Use of open-loop Process Trainer response data to develop discrete-time transfer function models for different values of sampling period 2. Use of the root locus to design a DC servo control system with . a Proportional-plus-Derivative controller a Proportional controller with velocity feedback 3. Use of Simulink to conduct step response simulation of a DC servo control system 4. Comparison of real and simulation results for the designed DC servo control systems B. Altitude Hold Autopilot Design Exercise 1. Derivation of the dynamics models of elements of an altitude hold autopilot, using given the longitudinal stability and control derivatives data for an aircraft, 2. Use of MATLAB and the root locus method for a two-stage design of an altitude hold autopilot for the aircraft model 3. Use of Simulink for pulse and step response simulations of the altitude hold system. Transferable Skills and other Attributes 1.MATLAB and Simulink coding 2.General Control system design issues 3. Report writing Module Aims 1. 2. To teach basic principles and theory associated with the Nyquist stability theorem To teach basic principles and theory of flight control as related to gain margin Word count/ duration (if applicable) Your assessment should be 2000 to 2500 words Feedback arrangements You can expect to receive feedback five weeks having completed the laboratory unless otherwise informed. Good Academic Conduct and Academic Misconduct Students are expected to learn and demonstrate skills associated with good academic conduct (academic integrity). Good academic conduct includes the use of clear and correct referencing Assessment Brief Form 2 Assessment Criteria Marks for your assessment will be allocated based on having a section on each of the following: Mini Report Digital Control Design Laboratory (Pass/Fail) 1. Objectives 2. Results of: All discrete-time open-loop Process Trainer transfer function models • All root locus designs for the DC servo control system • Simulink step response simulations of the DC servo control system 3. Discussion of: • The main results of the Digital Control Design laboratory Main Report: Altitude Hold Autopilot Design Section A: Introduction (3% of assignment mark) This should be a general Introduction on: • The importance of autopilots in aircraft Section B: Altitude Hold Autopilot Design Exercise (20% of assignment mark) 1. Objectives & Theory 2. Results of: • Modelling of the altitude hold autopilot system Assessment Brief Form 3 Design of the inner loop pitch attitude control system • • Design of the outer loop altitude hold system Simulink pulse and step response simulations of the pitch attitude and altitude hold systems 3. Discussion of all the main results. Section C: Conclusions (7% of assignment mark) Conclusions on the outcomes of the two Laboratories and MATLAB/Simulink Exercise. Marking Marks will be awarded based on the following levels of performance: 80-100 Excellent/Outstanding 70-79 Very Good 60-69 Good 50-59 Fair 40-49 Adequate 30-39 Marginal fail 20-29 Poor 0-19 Very Poor The pass mark for this assignment is 40%. In Year Retrieval Scheme Your assessment is/is not (please delete as appropriate) eligible for in year retrieval. If you are eligible for this scheme, you will be contacted shortly after the feedback deadline. [Note for staff: this scheme would usually apply to all level 3 and 4 assessments with a submission date of end March 2019). Reassessment If you fail your assessment, and are eligible for reassessment, you will need to resubmit on or before the august hand in deadline. For students with accepted personal mitigating circumstances, this will be your replacement assessment attempt. Students should be aware that there is no late submission period at reassessment (this includes those students who have an accepted PMC request from a previous attempt). Reassessement will be the same as the original report. August resit deadline. Assessment Brief Form 4