Is transfer Function of a mathematical system unique?

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SUMMARY

The transfer function of a mass-spring-dashpot system is not unique due to the influence of varying physical parameters such as mass and spring characteristics. While substituting different values for these parameters alters the coefficients of the transfer function, the fundamental mathematical form remains consistent. This discussion clarifies that the uniqueness of a transfer function applies to its structure rather than its specific coefficients, which can vary based on the system's physical attributes.

PREREQUISITES
  • Understanding of transfer functions in control systems
  • Familiarity with mass-spring-dashpot system dynamics
  • Basic knowledge of mathematical modeling techniques
  • Concept of system parameters and their impact on system behavior
NEXT STEPS
  • Study the derivation of transfer functions in control theory
  • Explore the impact of parameter changes on system response
  • Learn about the mathematical modeling of mechanical systems
  • Investigate the role of coefficients in transfer functions
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Engineers, control system designers, and students studying mechanical systems who seek to understand the relationship between physical parameters and transfer functions in mathematical modeling.

auphi
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I have gone through a mathematical modelling of a mass spring dashpot system in which if substitute differently we get different transfer functions. How does this really happen as we say Transfer function of a system is unique.
 
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Need more info. Not sure what you mean by " which if substitute differently".

Changing any parameters will change the transfer function. Mass, spring characteristes, etc.
 
Changing any of the physical parameters of the system will change only the coefficients of the transfer function; the mathematical form of the transfer function will stay the same.
 

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