mechatronics project
TRANSCRIPT
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Submitted To:Prof. Tilak Thakur
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Sensors and TransducersLVDT
Signal Conditioning devicesFilters
ActuatorsGears
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Transducers are devices that convert physical parameter change into either current or voltage changes.
Sensors convert some physical parameter change into some other physical parameter change
Sensor + transductor = transducer
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Capacitive transducer Inductive transducer (LVDT) Resistive transducer (strain gauge , potentiometric) Thermal transducer (thermocouples) Optical transducer
(photodiodes , photo resistors , phototransistors)
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LVDT (Linear variable differential transducer)
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The linear variable differential transducer(LVDT) (also called just a differential transducer) Electrical transducer Used for measuring linear displacement
(position). The LVDT converts a position or linear
displacement from a mechanical reference (zero, or null position) into a proportional electrical signal containing phase (for direction) and amplitude (for distance) information.
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The linear variable differential transformer has three solenoidal coils placed end-to-end around a tube.
BY : SHUBHAM AND SIMER
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The center coil is the primary, and the two outer coils are the top and bottom secondary's.
BY : SHUBHAM AND SIMER
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direction of winding of secondary coils are such that voltage induced in them are in opposite
direction/phase.
BY : SHUBHAM AND SIMER
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BY : SHUBHAM AND SIMER
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BY : SHUBHAM AND SIMER
A cylindrical ferromagnetic core, attached to the object whose position is to be measured, slides along the axis of the tube.
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BY : SHUBHAM AND SIMER
A cylindrical ferromagnetic core, attached to the object whose position is to be measured, slides along the axis of the tube.
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BY : SHUBHAM AND SIMER
A cylindrical ferromagnetic core, attached to the object whose position is to be measured, slides along the axis of the tube.
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BY : SHUBHAM AND SIMER
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SECONDARY COIL `S2’
SECONDARY COIL`S1’
CORE –APPLIED WEIGHT /FORCE /PRESSURE
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Let's study the working of LVDT by splitting the cases into 3 based on the iron core position inside the insulated former.
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BY : SHUBHAM AND SIMER
An alternating current drives the primary and causes a voltage to be induced in each secondary proportional to the length of the core linking to the secondary.
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BY : SHUBHAM AND SIMER
An alternating current drives the primary and causes a voltage to be induced in each secondary proportional to the length of the core linking to the secondary.
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BY : SHUBHAM AND SIMER
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BY : SHUBHAM AND SIMER
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Case 1: On applying an external force which is the displacement, if the core reminds in the null position itself without providing any movement then the voltage induced in both the secondary windings are equal which results in net output is equal to zero i.e., Esec1-Esec2=0
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Case 2: When an external force is applied and if the steel iron core moves in the right hand side direction then the emf induced in the secondary coil 2 is greater when compared to the emf voltage induced in the secondary coil1. Therefore the net output voltage will be Esec2-Esec1.
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BY : SHUBHAM AND SIMER
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BY : SHUBHAM AND SIMER
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BY : SHUBHAM AND SIMER
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BY : SHUBHAM AND SIMER
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BY : SHUBHAM AND SIMER
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BY : SHUBHAM AND SIMER
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Case 3: When an external force is applied and if the steel iron core tends to move in the left hand side direction then the emf voltage induced in the secondary coil is greater when compared to the emf induced in the secondary coil 2. Therefore the net output will be Esec1-Esec2
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BY : SHUBHAM AND SIMER
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BY : SHUBHAM AND SIMER
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BY : SHUBHAM AND SIMER
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BY : SHUBHAM AND SIMER
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BY : SHUBHAM AND SIMER
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Applications :
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Cartoon interpretation TUGOF
WAR
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If right side players exert more force than the left hand side players ,there
will be a net motion towards right side .thus right side will dominate
If left side players exert more force than the right hand side players ,there will be a net motion towards left side
.thus left side will dominate
If force exerted by both the sides is same then there will be no net
motion. No side dominates.
Motion of the rope can be compared to the motion of the conductor in LVDT. Dominating side tells whether the net voltage is in direction of secondary coil 1 or 2.
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DEFINITIONchanging shape ,size
and energy of the signal coming from
sensors and transducers is known
as input signal conditioning.
NEEDsignal is almost impure
it is analogueenergy level is less
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FILTERS: These are the devices that remove certain band of frequencies from a signal and permit others to be transmitted.
THERE ARE 3 TYPES OF FILTERS:A)LOW PASS FILTER- allows frequencies from 0 up to certain frequency to be
transmitted.B) HIGH PASS FILTERS- allows frequencies from a certain frequency up to infinity to
be transmitted.C)BAND-PASS FILTERS- allows all the frequencies within a certain band to be
transmitted.
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FILTER
FILTER
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Low pass filter
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HIGH pass filter
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BAND pass filter
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BAND STOP filter
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Cartoon interpretation Low pass filter :
Low and high frequency
Low pass filter
Low frequency
Wheat + bran sieve wheat
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Cartoon interpretation Band pass filter :
Band pass filterWilling for ride (Entry for people age b/w 5 to 80) (Frequencies willing to pass)
Eligible for ride(Frequencies in a particular range allowed)
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High pass filter
6.5 7.9
8.4
10
Cartoon interpretation Futures first(consultancy firm)Only those candidates can sit for the interview Whose CGPA is greater than 8.5
High pass filter :
Frequencies passing through the circuit
Frequencies above a certain frequency are allowed to pass
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THESE ARE FINAL DECSION
IMPLEMENTING DEVICES.
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ELECTRICAL ACTUATOR
MECHANICAL ACTUATORPNEUMATIC ACTUATORHYDRAULIC ACTUATOR
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It is a mechanical actuator It is used to transform and transfer a rotational
motion from one axis to another
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the counter shaft has
smaller gear on it in mesh
with the output shaft
gear
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the counter shaft has
smaller gear on it in mesh
with the output shaft
gear
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the counter shaft has
smaller gear on it in mesh
with the output shaft
gear
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The power is transferred
by the smaller gear
on input shaft to
larger gear
on the output along
counter shaft.
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The power is transferred
by the smaller gear
on input shaft to
larger gear
on the output along
counter shaft.
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The power is transferred
by the smaller gear
on input shaft to
larger gear
on the output along
counter shaft.
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The power is transferred
by the smaller gear
on input shaft to
larger gear
on the output along
counter shaft.
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The output turns in the same direction as input but in a ratio dependent upon the sizes of gears.
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The output turns in the same direction as input but in a ratio dependent upon the sizes of gears.
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Since two types of gears are used so their ratio is compounded together or multiplied together
The output turns in the same direction as input but in a ratio dependent upon the sizes of gears.
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Applications
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Applications
Differential gear
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Applications
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Crane is transporting car from one place to another
Crane can be considered as gear train Car can be considered as rotational motion
Place from where the car is carried from and going to can be regarded as axis
Cartoon interpretation
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CombinedSystem
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BY : SHUBHAM AND SIMER
V out FILTER
amplifier
As the man pushes core of sensor,
Electrical signal(A.C.) is generated. The
signal Is conditioned by filter ,then amplified
by Amplifier . So final current will get
Into motor and a part of door gets opened
and then by the use of gears we opened the
other part of door also.
motor
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