robotics

8/2/2019 Robotics ..

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ROBOT CONTROLLED MILITARY VEHICLEWHICH CAN TRAVEL IN 90 DEGREES ANGLE

WITH EQUIPMENTS

BATCHMATES : MEGANA.G (21008107061)

NAGA.RM (21008107070)NITHYA.K (21008107078)

PROJECT GUIDE : s. MALLIGA (Asst prof )


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ABSTRACT:

Existing system : In the existing system robots were able to travel in all

terrains and they were only effective ground vehicles.

They used ordinary magnets.

The motor used to drive the robot was a simple

stepper motor .

Proposed system: We present preliminary results of a robot system which

can be effective ground vehicle and can also move in

90 degree angle We use power magnets instead of ordinary magnets

We use gear motor to drive the robot. Gear motorassists in proper movement of the robot in 90 degreeangle.


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Block diagram :

RelaySwitchingcontrol

Motordriver

Blinker

Left motor

Right motor

Power supply


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Circuit diagram :


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HARDWARE REQUIRMENTS:

Relays

Gear Motors Gun

Joystick

Four Wheels Timing Belt

Power Magnet


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Gear motor :

Gear motors are complete motive force systemsconsisting of an electric motor and a reduction geartrain.

The reduction gear trains used in gear motors are

designed to reduce the output speed whileincreasing the torque.

The increase in torque is inversely proportional tothe reduction in speed.

Reduction gearing allows small electric motors tomove large driven loads. It consists of a small geardriving a larger gear


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Gear motor :


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Timing belt :

Here we are using timing belt or a cam

belt this replaces the older style

of timing chains.

The wheels on either side are

Connected by timing belt.

Timing belt is used for even matching of

wheels.

Timing belt has teeth and adjacent teeth space.Teeth's are considered as 1s and adjacent teeth

spaces as 0s.

Power magnets are placed in the respective teethspaces.


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Power magnet :

The magnet which we use here is

power magnet.

The size of the power magnet used

here is nearly 5mm.

The number of magnets fitted on

either side of the timing belt is 20.

A small input of force is more than enough to

make it work. After that, the motor will never slowdown.

For proper movement of the robot at 90 degreeangle on the metal surface against gravitationalforce we use power magnets.


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Relay :

A relay, is a small machine consisting

of an electromagnet (coil), a switch,

and a spring.

Here we are using 8 relays. Four relays are used for forward action of the

wheel and four relays are backward action of thewheel.

Relay is used for the rotational movement of thewheel


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Working of relay :

It is operated as switch and DPST switch is used. When the relay coil is in ON

position the switched circuit will

be on only if it is connected to

common and normally open(NO).

When the relay coil is in OFF

position the switched circuit

will be on only if it is connected

to common and normally closed

(NC).

Relay used here is machine tool

relay and used for controlling all kind of machines


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Gun :

Here we place the gun

on the top of a vertical

rider which is operated by

a joystick. The gun we use here is a play gun which throwsstones as we give a supply to it.

This consist of a positive and a negative supply given

from the 12v adaptor and a rod which holds the stone.


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Working of gun:

Whenever the positive supply is given to the gun, itpushes the rod in high-speed so that the stone travelsat the targeted path.

Inside the gun, there is gear and a rod with slots upand down which helps the outer rod to moveclockwise and anti-clockwise.


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PN diode :

The most basic property of a junction diode is

that it conducts an electric current in one

direction and blocks it in the other.

Here we are using four diodes.

Diodes are used to pass the action from relay to wheeland

Control action of the wheel is governed out by the diode.


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Wheel and joystick:

Here we are using four wheel

Each wheel is nearly 6cm

Forward and backward actions, left and right

actions and operation of the gun is controlled byjoystick.


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Thank you

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