Resilience Engineering a new paradigm and technology

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Resilience Engineering a new paradigm and
technology
for systems
Dr. WJ (Chris) Zhang Professor, Mechanical
Engineering Professor and Chair, Biomedical
Engineering University of Saskatchewan Canada Gue
st Chair Professor, Engineering ECUST,
China Email chris.zhang_at_usask.ca
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University of Saskatchewan
- 1907 founded - Ranking 9 / 15 Medical Doctor
cat - 2 Nobel Prizes - Synchrotron facility
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Design, Manufacturing, and Management (DMM)
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• Agenda of Todays talk
• Resilience engineering
• 2. My past research

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Resilience engineering

• Design, manufacturing, and management (DMM) of
  systems, expecting
• Function cost, quality, time
• Reliable
• Robust
• Sustainable / Repairable / Recyclable

Resilient
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Resilience engineering

• Design, manufacturing, and management (DMM) of
  systems, expecting
• Function cost, quality, time
• Reliable
• Robust
• Sustainable / Repairable / Recyclable

Pleasure
Trade-off among these attributes
Comfort
Resilient
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Resilience engineering
Critical Systems
Dysfunction will cause significant threats to
human health and life
Reliability
Desire 1. always function gt never fail
2. If fails, recover
Resilience
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Resilience of a system
A possibility that the system recovers its basic
function after the system is damaged to such an
extent that either system is physically broken or
beyond its yield state
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Reliability of a system ?
A possibility that the system does not
dysfunction or fail
Life of components and systems and their
interfaces is as long as desired or within a
controlled period of time
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Resilience VS Robustness
Robustness keep the system functioning under
disturbances
Control robust control
Design robust design
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Resilience VS Repairing
Repairing Use external means, instead of system
own resource or energy, to heal the damaged
component to recover the function of the system
Resilience Stress on the utilization of a
systems own resource or energy to heal the
damaged component to recover the function of the
system
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Resilience VS Sustainability
Sustainability Exploration and utilization of
the resource of the system with the eye of
generation of the resource with the particular
goal of making it balanced utilization and
generation of the resource
Function to supply to meet the demand
Function to withstand demanded load
Dysfunction withstood ability is less than
demanded load
Dysfunction Supplied less than demanded
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Sustainability
Resource system
Self-adjusting, self-healing, self-recovery
Artifact system
Biological system
Resilience
Resilience
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Resilience Engineering of Artifact Systems -
Technology
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Resilience Engineering Technology
Engineering to build an artifact system
Analysis model and measure property of
structure Synthesis determine structure and
energy Manufacturing make the structure and
energy system Management use the structure and
energy system
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Resilience Engineering Technology
Resilience in the artifact system
For a purpose
Usefulness
Has a function
Redundancy
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Resilience Engineering Technology

• Resilience analysis degree of functional
  redundancy of a structure and energy system
• Resilience synthesis structure and energy to
  achieve the degree of functional redundancy
• Resilience manufacturing materials and ways of
  making the structure and energy system that has
  the degree of functional redundancy
• Resilience management operation and use of the
  structure and energy system to make the function
  attainable and perceivable

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Resilience Design Principles
Principle 1. Modular architecture
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Resilience Design Principles
Principle 2. Adjusting architecture (energy)
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Resilience Design Principles
Principle 2. Adjusting architecture (structure)
Expansion
Piezoelectric film
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Resilience Design Principles
Principle 3. Structure reconfiguration
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Principle 3. Structure reconfiguration
Hybrid machine
1. If one is broken but still can be taken as a a
regular motor. The other servo motor can be
reconfigured in software so that the whole system
can still function as originally desired.
2. If one is completely broken. We can use belt
transmission system to transfer the motion from
one servo motor to the rotational shaft on which
the motor is broken
Two servo motor machine
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Conclusion

• Resilience engineering is a promising research
  area
• There is a similarity between resilience in
  artifact and resilience in biological system and
  resource system
• There is a possibility to learn resilience in
  biological systems for artifact systems
• In artifact system, function redundancy is means
  to design resilient system

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Questions Comments?

Thank You!