Lecture1 and 2 MTE 242 (2).pdf

Lecture 1 Design of mechatronic systems MTE 242 Week 1  Course Specification Cspc-MTE-242-Oct23.pptx  Assessment method Assessment Method Mark Week Exam Time Final Exam (written) 40 15th 90 min. Midterm wri...

Lecture 1 Design of mechatronic systems MTE 242 Week 1  Course Specification Cspc-MTE-242-Oct23.pptx  Assessment method Assessment Method Mark Week Exam Time Final Exam (written) 40 15th 90 min. Midterm written 20 8th 60 min. Exam (Term Work) End of term - 15th Committee laboratory exam (Lab) End of term Oral - 15th Committee exam Tutorial and report 20 weekly --- assessment (Term Work) Quizzes/reports 20 According --- /presentation to (Term Work) schedule Total Mark 100 Main Topics  Main topics  The project should include: Technological solutions to confront economic challenges and support the country’s efforts to deepen local industrialization Project proposal: Choose a project and a)- write a proposal containing the following The proposal must contain: 1) a title page with title, group number, group member names, and date. 2) An abstract (Objectives – Methods – Expected results) 3) a concise overview of what your proposed device is and how it will work. Include well-labeled figure(s) to illustrate your device concept (what it will look like, how it works, what it does). Be sure to label key components in your figures (with concise text and arrows). 4) a functional diagram showing all major components and their connections. 5) a list of the proposed components , detailed Parts of Titl Methodology Resul ts Proposal e Significance/I Table of Review of mplicatio Contents Literature ns Purpose/Ai Abstr Resear ms/ Referen act ch ces Questi ons Introducti Statement Appen Backgro on/ of the dix und Problem  Team organizat ion mechani electro program assem Writt cal ing bly en nics wor k nam nam nam nam nam es es es es es  Scheduling level +time planning Gantt chart  Lecture 2 Design of mechatronic systems MTE 242 Week 2  Mechatronics Field consists of the integration of three distinct traditional engineering fields for system level design processes. These three fields are: 1. mechanical engineering where the word “mecha” is taken from, 2. electrical or electronics engineering, where “tronics” is taken from, 3. computer science. Fields of work for Mechatronics Engineer: (See the peripheral of outside circle) 1Automotive 2Aeospace 3 Medical 4 Defense System. 5 Consumer Products 6 Manufacturing 7 Material processing.  Multidisciplinary Design Versus Mechatronics :- The difference is not in the constituents, but rather the order in which they are designed Multidisciplinary: Design and build the mechanical system. Then bring the painter to paint it and the control system engineers to install the controls. – What are the drawbacks of this approach.? Concurrent : instead of sequential approach to discipline design, Concurrent approach (Mechatronics design approach); Resulting in products with more synergy. What are the advantages.? A Mechatronics system is not an electromechanical system and it is more than a control system. Smart Machines Designing of  Components of the mechatronic Plant systems Controller Actuator Feedback device  Typical Mechatronic Systems examples of mechatronic systems: Home appliances (e.g. washing machines): Many of the home appliances that are in use today are mechatronic systems. They are manufactured in large numbers in masse and typically require small controllers to be “embedded” within them. the four components of the mechatronic systems: 1.The washing machine as an example of a mechatronic system. Let us take one of the systems within the washing machine such as the water heating system. Plant: The water within the washing machine Controller: Embedded controller on an integrated circuit Actuator: Heating element Feedback device: thermal sensing element such as a bimetallic strip or a resistance temperature detector (RTD)  ABS (anti-lock braking system) and many areas in automotive engineering: An anti-lock braking system on a vehicle is a system that prevents the wheels from ceasing up or stopping to rotate when the brakes are suddenly pressed. Another good example of a mechatronic system from automotive engineering is the engine control unit (ECU). In an anti-lock braking system, it is important to prevent the locking of the braking system when the road surface is slippery. Plant: The wheels and the braking system Controller: ABS control module embedded within a microcontroller Actuator: Solenoid valve controlling the hydraulic fluid Feedback device: Wheel speed sensors Elevators: speed control system in an elevator is comprised of the following: Plant: elevator cabin Controller: elevator speed controller system Actuator: induction motor, drive system Feedback device: shaft encoder 8. Tank fluid level systems: Plant: tank and contained fluid Controller: microcontroller Actuator: pump Feedback device: float device or ultrasonic sensor 9. Temperature control system in an industrial oven: Plant: oven and product within Controller: microcontroller or programmable logic controller Actuator: heating coil Feedback device: bimetallic strip 10. Heat seeking missiles: Plant: the missile body and any payload Controller: microcontroller embedded within the missile Actuator: jet engine Feedback device: temperature sensors fitted to the body of the missile  11. Packing Machines: Plant: Item to be packed and conveyor carrying it. Controller: PLC (programmable logic controller). Actuator: Hydraulic cylinder. Feedback device: the feedback devices for such a system are usually of three types: a) image processing b) laser range sensors c) ultrasonic sensors 12. Painting robot: Plant: item to be painted (e.g. car frame) Controller: microcontroller Actuator: servo-motors controlling the robot parts Feedback device: camera with image processing software 13. Coordinate measuring machine (manipulator arm): Plant: CMM arms and object to be scanned Controller: PC with dedicated software Actuator: Human operator (i.e. not automated!) Feedback device: absolute shaft encoders on the CMM