mechatronics presentation on electrical actuation & mechanical switches

7/25/2019 MECHATRONICS PRESENTATION ON ELECTRICAL ACTUATION & MECHANICAL SWITCHES

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MECHATRONICS PRESENTATION ONELECTRICAL ACTUATION & MECHANICAL

SWITCHES

By

SUBHOBROTO MALLIK

1MS12ME169Department of Mechanca! En"neern"

MSRIT


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Table Of Contents

# Intro$%cton

# Act%ator&

# E!ectrca! act%aton &y&tem

# S'tche&

# Mechanca! S'tche App!caton&

Ref( )%n$amenta!& of Sen&n"* Roc+'e!! A%tomaton , A!!en Bra$!ey


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Introduction

Moton & a common parameter n any of the

mechanca! &y&tem an$ n fact there & no !fe

'tho%t moton-

Mechanca! en"neer& are a!'ay& on the !oo+o%t

for "eneratn" moton a& ea&y a& po&&.!e 'th

$fferent metho$&an$ techn/%e&-

An e!ement n an en"neern" &y&tem 'hch ha&no moton an$ to 'hch moton can .e mparte$ &

ca!!e$ 0act%ator0-


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ia!ra""atic Re#resenatation


S"na! roce&&n"

Amp!fcaton

Mechan&m

E!ectrc Hy$ra%!c

ne%matc )na! Act%aton

E!ement

Act%ator

Sen&or

Lo"ca!

S"na!


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efinition

An act%ator & a mechanca! e!ement an$

act%atn" mean& mpartn" moton-

There are many metho$& of mpartn" moton to

an act%ator $epen$n" on the type of ener"y

&o%rce re/%re$-


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T$#es of Actuators

1- E!ectrca! act%ator&3 E!ectrc motor&

# D4 &er5omotor&

# A4 motor Stepper motor&

3 So!eno$&

2- Hy$ra%!c act%ator&3 U&e hy$ra%!c f!%$ to amp!fy the contro!!er

comman$ &"na!

- ne%matc act%ator&

3 U&e compre&&e$ ar a& the $r5n" force


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Ste##er "otor and Ser%o"otor


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Ser5oMotor


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asic Co"#onents

# Actuator' The porton of the &'tch that come& n

contact 'th the o.7ect .en" &en&e$-

# Head' It ho%&e& the mechan&m that tran&!ate&

act%ator mo5ement nto contact mo5ement- 8henthe act%ator & mo5e$ a& nten$e$* the mechan&m

operate& the &'tch contact&-

# Contact loc(' It ho%&e& the e!ectrca! contact

e!ement& of the &'tch- It typca!!y contan& ether

t'o or fo%r contact par&-


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asic Co"#onents )contd*+

# Ter"inal loc(' The termna! .!oc+ contan& the

&cre' termnaton&- Th& & 'here the e!ectrca!

're: connecton .et'een the &'tch an$ the re&t

of the contro! crc%t & ma$e-# S,itc- od$' The &'tch .o$y ho%&e& the contact

.!oc+ n a p!%";n &'tch- It an$ termna! .!oc+ n

the nonp!%";n &'tch-

# ase' The .a&e ho%&e& the termna! .!oc+ n a

p!%";n &'tch-


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Electrical S$ste"s

An e!ectrca! &y&tem & a "ro%p of e!ectrca!

$e5ce& or component& connecte$ n a ratona!

manner to ache5e an$ %t!=e the e!ectrca! ener"y

n an effcent an$ effect5e manner-

The .a&c e!ement& that con&tt%te an e!ectrca!

&y&tem are po'er &%pp!y*contro!!n" %nt* po'er

%t!=n" $e5ce& &%ch a& motor p%mp& an$ 'rn"-A!&o a$$tona! e!ement& &%ch a& tran&former may

.e nc!%$e$-


12/29Ref( )%n$amenta!& of Sen&n"* Roc+'e!! A%tomaton , A!!en Bra$!ey


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escri#tion and Classification

A "ro%p of e!ement& arran"e$ n a ratona!=e$

manner to carry o%t the act of act%aton of the

nten$e$ e!ement or e!ement& & an act%aton

&y&tem-

4!a&&fcaton of act%aton &y&tem&(

1: Mechanca! Act%aton Sy&tem

2: Ma"netc Act%aton Sy&tem

: Therma! Act%aton Sy&tem

>: Hy$ra%!c Act%aton Sy&tem

?: ne%matc Act%aton Sy&tem


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In mechanca! Sy&tem& mechanca! /%antte&

&%ch a& force*tor/%e etc are %&e$ for mpartn"

moton 'th a "ro%p of mechanca! e!ement&&%ch a& "ear&*.e!t&*p%!!ey&*cam&*re!ay& etc-


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Electrical Actuation S$ste"

An e!ectrca! act%aton &y&tem & one 'here

moton & mparte$ to the act%ator %&n" e!ectrca!

ener"y-

One of the man contro!!n" e!ement n any

e!ectrca! &y&tem & a &'tch-

E!ectrca! ener"y mpart& moton to a 5arety of

$e5ce& &%ch a& e!ectrca! motor&*&o!eno$&*re!ay&etc an$ hence they are ca!!e$ e!ectrca! act%aton

&y&tem&-


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Introduction To S,itc-es

# A &'tch & an e!ectromechanca! $e5ce thatcon&&t& of an act%ator mechanca!!y !n+e$to a &et of contact&-

# 8hen an o.7ect come& nto contact 'th theact%ator* the $e5ce operate& the contact& toma+e or .rea+ an e!ectrca! connecton-

# It can $etermne the pre&ence or a.&ence ofan o.7ect- It 'a& fr&t %&e$ to $efne the!mt of tra5e! of an o.7ect@ hence the nameLmt S'tch-


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efinition And Classification

A &'tch & a mechanca! $e5ce or an e!ectronc

$e5ce %&e$ to connect an$ $&connect &em

con$%ctor $e5ce: po'er &%pp!y-

4!a&&fcaton of S'tche& (

1: Mechanca! S'tche&

2: So!$ State S'tche&


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T$#es Of S,itc-es



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Mec-anical S,itc-es

Mechanca! &'tche& are tho&e 'here n

&'tchn" acton & $one .y the app!caton

of mechanca! /%antty -e force on &'tch-

D%rn" mechanca! acton the mechanca!e!ement& mo5e 'thn the &'tch-

The&e &'tche& con&&t& of one or more par

of contact& 'hch are mechanca!!y c!o&e$or open %&n" a mechan&m an$ n $on" &o

ma+e or .rea+ the "5en e!ectrca! crc%t-


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Wor(in! Of A .e$board

S,itc-



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ouncin!

8hen a mechanca! &'tch of on;off type &

operate$ to c!o&e the contact&* .eca%&e of

the e!a&tc nat%re of contact* the contact5.rate& or .o%nce& .efore fna! contact* th&

& ca!!e$ Bo%ncn"-enera!!y the .o%ncn"

tme & a.o%t 2C m!!&econ$&- Sm!ar effectcan occ%r 'hen the &'tch & opene$-



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ouncin! Period



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ebouncin!

Mt"atn" or pre5entn" the effect of &'tch

.o%nce & ca!!e$ De.o%ncn"- Mo&t common!y

%&e$ metho$& are(# Mechanca! So!n- e" mem.rane &'tche&*

to""!e &'tche&:

# Soft'are So!n- Mcroproce&&or:# E!ectronc Har$'are So!n D;f!p f!op crc%t*

Schmtt tr""er:



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Mec-anical Ad%anta!es of

Li"it S,itc-es

# Ea&e of %&e

# Smp!e 5&.!e operaton

# D%ra.!e ho%&n"# 8e!! &ea!e$ for re!a.!e operaton

# H"h re&&tance to $fferent am.ent con$ton&fo%n$ n n$%&try

# H"h repeata.!ty

# o&t5e openn" operaton of contact& &omemo$e!&:


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Electrical Ad%anta!es of Li"it

S,itc-es

# S%ta.!e for &'tchn" h"her po'er !oa$& than other&en&or techno!o"e& ?A at 2> D4 or 1CA at 12C A4typca! 5&- !e&& than 1A for promte& or photoe!ectrc&:

# Imm%nty to e!ectrca! no&e nterference

# Imm%nty to ra$o fre/%ency nterference 'a!+e;ta!+e&:

#


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isad%anta!es of Li"it

S,itc-es

# Shorter contact !fe than &o!$;&tate

techno!o"y

# Mo5n" mechanca! part& 'ear o%t

e5ent%a!!y

#


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T$#ical A##lications

# 4on5eyor &y&tem&

# Tran&fer machne&

# A%tomatc t%rret !athe&

# M!!n" an$ .orn" machne&

#Ra$a! $r!!&

# H"h &pee$ pro$%cton e/%pment


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Thank You.

mechatronics presentation on electrical actuation & mechanical switches

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