How do Industries 1.0 to 4.0 differentiate?
Industry 1.0: Steam Engine
Industry 2.0: Mass production supported by Electrics (Ford)
Industry 3.0: Automation supported by Electronics (Mechatronics)
Industry 4.0: Internet of Things (IoT) —> Cyber Physical Systems (CPS)
What is understood under the abbreviation RUL?
The Remaining Useful Life tries to estimate the remaining usability of a product (or component)
This is understood in global terms and in maintanance terms —> Know two things:
How much money does the machine need to earn to pay off?
When is the next maintenance due?
What is understood under the term “Bathtup Curve“ in the context of RUL?
What is understood under the abbreviations MME and SME?
MME: Mechatronic Machine Elements
SME: Sensing Machine Elements
How are Sensing Machine Elements differentiated?
Sensor carrying machine elements (ScME)
Sensor integrating machine elements (SiME)
Sensory utilizable machine elements (SuME)
What is understood as a Sensing Machine Element
A Sensing Machine Element is a ME that has a sensor strapped to it, that measures a variable that´s independent of the ME, e.g.
Bolt with thermistor at the tip
What is understood as a Sensor integrating Machine Element?
A Sensor integrating ME is understood as a ME that integrates the Sensoric unit deep into it´s structure measuring the machine element itself. (In some cases also providing it with energy)
E.g.
Belt with integrated accelerometer (Belt load is measured)
Bolt with integrated strain gauge (Bolt load is measured)
Connecting element of claw cuppling with integrated strain gauge
What is understood as a Sensory utilizable Machine Element?
A Sensory utilizable ME is a standard ME that, by measuring indirect values, will give a clue about self related variables, e.g.
Dynamic Fluid bearing: State of friction can be measured by capacity of the bearing (between shaft and outer layer)
Roler bearing: Load can be measured by capacity of the bearing (Between shaft and outer ring —> balls with be pushed flat, therby creating a larger surface area and larger capacity)
Valve: Capacity between Housing and Closing body will indicate opening state
What is to be kept in mind regarding measuring concepts when developing sensing machine elements?
A robust concept is needed and concepts that show weaknesses should be discarded ASAP —> “Rule of ten” - For every development step taken, the cost for change increases by the factor of ten
Use simplified prototypes that focus on the concept of measuring —> e.g. regarding the opening of a valve, The mechanism of the closing is enough
Last changeda year ago
