Modeling And Simulation Flashcards
1
Q
Goals of modeling
A
- Formal specification
- Model aided development
- Verify specification
- Systematic validation
2
Q
Model Theory
A
- Representation (One view on the reality/original)
- Reduction (Only relevant attributes considered)
- Pragmatic (Created for a specific purpose)
3
Q
Steps in white box modeling
A
- Structured model (SysML)
- Cause and effect model (Idealization)
- Qualitative model (Formalization)
- Quantitative model (Quantification)
- Simplified model (Reduction)
4
Q
Non-causal model
A
- Information flow direction not defined
- Based on conservation of energy
- For each domain there is a flow and effort quantity
5
Q
Causal model
A
- Direction of information flow is given
- Numerical simulators available
- Can be used for SW
6
Q
Transformer
A
Effort stays effort and flow stays flow
7
Q
Gyrator
A
Effort becomes flow and flow becomes effort
8
Q
Energy storing converter
A
- Storage of energy can not be decoupled from transformation
- Capacitive and Inductive converters
9
Q
Black box
A
- Lot of data needed
- Easy do build
- No physical insight
- Prediction only possible in measured range
10
Q
Linear
A
Function is linear combination of parameters (value can be nonlinear)
11
Q
Nonlinear
A
Function is not a linear combination of parameters
12
Q
Least Squared estimation
A
y = u^T*Theta+e Theta = [U^T*U]^-1*U^T*y
