Mechatronics System

TASK CRITERIALearning Outcomes To achieve each outcome a learner must demonstrate the ability to: Task No FeedbackLO1 Understand the applications of a range of mechatronicsystems and products1.1 identify mechatronic systems by their discipline integration1ATask 1A (LO 1: 1.1)Describe the conceptual design, which combines mechanical and electrical systems to build the “Magnetic Levitation System “described inthe block diagram below.Identify the functions and capabilities, which cannot be effectively implemented by the mechanical and electrical system with correctreasonsThe frequency of the AC current passing through the coil will control the magnetic polarity changing speed around the soft steel boltand that will be directly effecting on the levitation stability of the object with the permanent magnet.Figure 1: Assembled Magnetic Levitation System (Thorat, 2015)Identify the functions and capabilities, which cannot be effectively implemented by the mechanical and electrical system with correctreasons.TASK CRITERIALearning Outcomes To achieve each outcome a learner must demonstrate the ability to: Task No Assessor FeedbackLO1 Understand the applications of a range of mechatronicsystems and products1.2 explain the need for system development in an integrated wayDescribe given examplesUse it to justify your answer of task 1BIdentify and apply strategies to find appropriate solutionsEffective judgments have been madeTask 1B (LO 1: 1.2, M1)Briefly explain the need for” Magnetic Levitation System “development in a way of integrated mechatronics system.TASK CRITERIALearning OutcomesTo achieve each outcome a learner must demonstrate the ability to: Task No FeedbackLO1,Understand the applications of a range of mechatronicsystems and products1.3 investigate mechatronic applications in consumer products and industrial processes1CTask 1C (LO 1: 1.3).Provide an integrated mechatronics system to “Magnetic Levitation System “.(Student can use an appropriate diagram to explain the system).TASK CRITERIALearning OutcomesTo achieve each outcome a learner must demonstrate the ability to: Task No FeedbackLO2 Understand electromechanical models and components in mechatronic systems and products2.2 analyze analogies between the models of physically different systems2BPhysical differences not yet achieve.Task2B (LO 2: 2.2)Explain analogies between the transfer functions of above mechanical system(Task1A-(a)) and electrical system (Task1A-(b))Solution.The analogies between the transfer functions of mechanical systems have distance, velocity or acceleration, as parameters, and outputare force or such forms.Whereas, the electrical system has a parameters like Resistance, Capacitors, Inductors, current and voltages as output or input.Mainly we have two types of mechanical system, which are the Rotational mechanicalsystemandLiner mechanical system.The Rotational mechanical system is arranged on the below Table: 2Three variables Which is Represented byAngular velocityTorqueAngular displacement ωTθTwo Parameters Which is Represented byCoefficient of viscous frictionMoment of inertia BJTable: 2And for the Liner mechanical system is also arrange in the below Table: 3Three variables Which is Represented byLinear displacementVelocityForce XVFThree Parameters Which is Represented bySpring constantMasCoefficient of viscous friction KMBTable: 3In the below table: 4. We can see Analogies between the transfer functions Electrical system.Three variables Which is Represented byCurrentVoltageCharge IVQThree parameters Which is Represented byCapacitanceResistanceInductance CRLThere are two types of analogies and they are written below:1. Force Current Analogy:In order to understand this type of analogy, Lets take an example of a circuit, which has a parallelcombination of resistor, inductor and capacitor as shown in the below diagram.The voltage E is connected in parallel with these elements as shown in the circuit diagram. Now from the circuit diagram and with thehelp of KCL equation we write the expression for current in terms of flux, resistance, capacitor and inductor as,I=C dt^2/(d^2 ψ)+1/R dt/dψ+ψ/LAfter comparing the above with that we have derived for the mechanical system we find that,a. Force is analogous to current I.b. Mass (M) is analogous to Capacitor (C).c. Coefficient of friction (B) is analogous to resistance 1/ Rd. Spring constant K is analogous to inverse of the inductor (L).e. Displacement (x) is analogous to flux (ψ).This analogy is known as force Current analogy2. Force Voltage Analogy: In order to understand this type of analogy, For example we havea circuit, which consists of series combination of an inductor, capacitor and resistor as shownin the below diagram.The V voltage is connected in series with theseelements as shown in the above circuit diagram. Now from the circuit diagram and with the help ofKVL equation we write the expression for voltage in terms of charge,resistance, capacitor and inductor as,V=L dt^2/(d^2 q)+Rdt/dq+q/CBy Comparing this with what we have derived for the mechanical system is shown as.a. Mass (M) is analogous to inductance (L).b. Force is analogous to voltage V.c. Displacement (x) is analogous to charge (Q).d. Coefficient of friction (B) is analogous to resistance R ande. Spring constant is analogous to inverse of the capacitor (C).This analogy is known as force Voltage analogyTASK CRITERIALearning OutcomesTo achieve each outcome a learner must demonstrate the ability to: Task No FeedbackLO2, Understand electromechanical models and components in mechatronic systems and products2.3 describe typical sensors and actuators for mechatronic systems and products2CTask 2C (LO 2: 2.3)Describe 2 typical sensors which can be used and how to detect a levitation high .Select the most suitable sensor and justify yourselection. (Accept the concept of the sensor used to detect the proximity instead of giving the technical name of the sensor.)TASK CRITERIALearning OutcomesTo achieve each outcome a learner must demonstrate the ability to: Task No FeedbackLO3 Be able to produce aspecification for amechatronic system or mechatronic product3.1 produce a specification for a mechatronic system to meet current British Standards3ATask 3A (LO 3:3.1)Produce complete specifications to provide the new functions and capabilities to identified mechanical and electrical systems inintegrated mechatronics system. (Students must provide the specification based on British Standards).TASK CRITERIALearning OutcomesTo achieve each outcome a learner must demonstrate the ability to: Task No FeedbackLO3 Be able to produce aspecification for amechatronic system or mechatronic product3.2 select suitable sensor and actuator technologies for a mechatronic system3BTask 3B (LO 3:3.2)Describe 2 typical actuators can be used to control the levitation high. Select the most suitable actuator/actuator system and justifyyour selection.(Accept the concept of the actuator used to control the variable resistor position that control the frequency of the AC voltagesupplied to the coil instead of giving the technical name of the actuator.)Task 3C (LO 3:3.3,).Figure shows a simplified elevator system used to transport parts in an elevator cage between the ground level and the first floor in amaintenance workshop.TASK CRITERIALearning OutcomesIndicative characteristics Contextualized Evidence Feedbacka)Demonstrate convergent/lateral/creative thinkingideas have been generated and decisions takenWrite any two controllers for this systemSelect any of them for thus system using knowledge about controller. Explain itCreative thinking not yet achieveSuggest two type of controller to control this system. Decide and explain which one is most suitable.Solution:The controllers, which can be used for this system, are:Micro Controller (M.C.)Programmable Logic Controller system (PLCs).Comparing the both systems controller.Programmable Logic Controller (PLC) Micro controller (M.C.)Simple ladder diagrams Complex coding’sEase of expansion Expansion needs more new coding’sEase of identifying cage positions Need to go through each section to detect positionSimple hard ware and wiring systems Wiring is a bit complexLess development and installing time More development time neededMost suitable controller:When selecting one of those mentions system, the most suitable one will be the Programmable Logic Controller system (PLCs). For thePLCs, controls the system efficiently.Task 4A.Figure shows a simplified schematic diagram of an automated packing station. The station packs six wine glasses individually into apreassembled wine glass boxThe system is fully automated once started. A continuous supply of glasses and boxes is provided by the glass Feeder system and theEntry conveyor respectively. There is a problem with damaged glasses being packaged by the automated packing station. Any damaged glassis to be automatically deposited in a waste bin.TASK CRITERIA.Learning OutcomesTo achieve each outcome a learner must demonstrate the ability to: Contextualized Evidence Feedbacka)Present and communicate appropriate findingsCoherent, logical development of principles/concepts for the intended audienceWrite operationWrite effects of those operations.Write solution, if you see any fault of those operation Fault not Explained effort not enoughExplain the operations, which are continuously monitoring after starting this system.Solution.The operations, which are continuously monitoring after starting this system, are:The exit conveyor is continuously workingSensor ‘A’ monitors the box-locating jig till empty boxes arrive.Then it sends signals to the PLC to move the shutter gate up and to stop the entry conveyor.After that six glasses are loaded in to the box by the robot ‘1’.Then it returns to its initial point and sends a signal to the PLC to lower the shutter gate and to start the entry conveyor.Then the box, which is packed exits through the exit conveyor while Sensor ‘A’, is once again monitoring for an empty box. Thisprocess continues simultaneously.TASK CRITERIA.Learning OutcomesTo achieve each outcome a learner must demonstrate the ability to: Contextualized Evidence Feedbackb)Use critical reflection to evaluate own work and justify valid conclusions.the validity of results has been evaluated usingdefined criteriaFind correct answer using appropriate equation. Justification not explainedAn optical incremental encoder can be used to measure linear displacement of conveyor. An encoder disk has 1024 equally spacedslots and is rotated through 3turns. Calculate the count that would be accumulated in a counter if the initial count was zero.Solution:The count that would be accumulated in the counter would be:1024 x 3 = 3072Thus, this number of boxes can be measured, before counter need to be resetIt takes 1•5 seconds to accumulate the count. The speed of the encoder in rpm speed of the encoder is 120 rpm. Using thesedetails justify your answer in (a).Solution:Displacement = (120 / 60) x 1.5 = 3.And this was the number for number of turns in the previous question. Hence, justified.TASK CRITERIA.Learning OutcomesTo achieve each outcome a learner must demonstrate the ability to: Contextualized Evidence FeedbackTakeresponsibility for managing and organizing activitiesSubstantial activities, projects or investigations havebeen planned, managed and organizedDescribe input and output of the system.Plan programmed for this system.Managing and organizing activity not coveredTask 4B.Consider following system. When a part is placed on the conveyor at position1 , it automatically moves to position 2, it stop andstamp, after stamping , it automatically move to position 3. It stops at 3, where the part is removed manually from the conveyor.Assume that only one part is on the conveyor at a time.Solution.