ME457: Mechatronic System Modeling and Simulation - PowerPoint PPT Presentation
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ME457: Mechatronic System Modeling and Simulation
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... Mechanical energy in translation and rotation Electrical and magnetic energy in circuits Fluid power in hydraulics and acoustics ... hydraulic ram Electrical ... – PowerPoint PPT presentation
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Title: ME457: Mechatronic System Modeling and Simulation
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ME457 Mechatronic System Modeling and Simulation
Prof. R. C. Rosenberg
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Math-based Engineering
- Math-based engineering (MBE) is becoming
increasingly important in industry. - What are the drivers for this trend?
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Some key questions
- Why is math-based modeling important to industry?
- What does math-based modeling mean?
- What does simulation mean?
- What are mechatronic systems?
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Why is math-based modeling important to industry?
- Increased complexity of components and systems
- Need for higher reliability means need for more
testing - Need for faster design of new products
- Better integration can be achieved between design
and manufacturing planning
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What does math-based modeling mean?
- Precise description of components and their
interconnections (preferably in a form that is
computable) - Schematics and idealized elements
- Mathematical graphs
- Equations
- Tables of performance data
- Computer programs
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What does simulation mean in a mbe environment?
- Exercising a math model by computing its behavior
(not necessarily its formal solution) - Software is involved (e.g., MATLAB).
- Models are constrained by software
characteristics. - Software predictions are constrained by
implementation of algorithms and by their
application. - Validation is still required at some level.
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What are mechatronic systems?
- Mechatronics combination of mechanical and
electronic subsystems (Japan, late 1960s) - Has evolved to mean inclusion of intelligence to
get smart products - Major components to be integrated
- Mechanical stuff (solids and fluids)
- Electrical/electronic stuff (circuits, sensors
and actuators) - Control stuff (feedback action)
- Computer stuff (intelligent decision-making)
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What are mechatronic systems? (cont.)
- Systems involve structural ideas
- Inputs and outputs
- Connections among model components
- Hierarchical arrangement (subassemblies)
- Various internal models possible as long as I/O
description is maintained
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Mechatronics modeling
- Energy is a guiding principle for getting physics
into mathematical form. - Energy has various forms
- Time-rate of energy transfer is power
- Signals denote transfer at very low energy levels
(called information transfer) - Individual components have ports for interacting
(power and/or signal types) - Components are connected between pairs of ports
by power bonds or signals - Transducer devices convert between energy forms
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Mechatronics modeling (cont.)
- Some energy types commonly used in engineering
- Mechanical energy in translation and rotation
- Electrical and magnetic energy in circuits
- Fluid power in hydraulics and acoustics
- Thermal energy and heat transfer
- Chemical energy in reactions
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Mechatronics modeling (cont.)
- Some transducers commonly used in engineering
- Mechanical energy translation/rotation rack and
pinion - Electrical/mechanical rotation dc motor
- Fluid power/mechanical translation hydraulic ram
- Electrical/thermal energy resistance heater
- Chemical energy/thermal a match
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