18-12-2012, 02:27 PM
fabricate a robotic trolley for material handling in industries.
fabricate a robotic trolley for material.pdf (Size: 457.58 KB / Downloads: 21)
INTRODUCTION
Mobile robots have capability to move around in their environment and not
fixed to one physical location. In contrast, industrial robots usually consist of a joint
arm (multilinked manipulator) and gripper assembly (or end effecter) that is attached
to a fixed surface.
Mobile robots are the focus of a great deal of current research and almost every
major university has one or more laboratory that focuses on mobile robot research.
Mobile robots are also found in industries; military and security environments. They
also appear as consumer products, for entertainment or to perform certain tasks like
vacuum.
WORKING PRINCIPLE
The sensor is connected at the bed of the vehicle. This is used to check
the load in bed. The motor is connected with the wheel arrangement with the help of
the spur gear.When the first user keep the tools in this vehicle the trolley moves
automatically to the second user.
If the second user took the tools from the trolley the trolley stops with the
second user. After that when the second user keeps a tool it moves to the next user. It
can be used in industries, hospitals etc.
FABRICATION OF PARTS
PMDC MOTOR
An electric generator is a device that converts mechanical energy to Electrical
energy. The reverse conversion of electrical energy into mechanical energy is done
by a motor; motors and generators have many similarities. A generator forces
electrons in the windings to flow through the external electrical circuit. It is
somewhat analogous to a water pump, which creates a flow of water but does not
create the water inside. The source of mechanical energy may be a reciprocating or
turbine steam engine, water falling through a turbine or waterwheel, an internal
combustion engine, a wind turbine, a hand crank, compressed air or any other source
of mechanical energy.
TORQUE CAPABILITIES OF MOTORS
When optimally designed for a given active current (i.e., torque current),
voltage, pole-pair number, excitation frequency (i.e., synchronous speed), and core
flux density, all categories of electric motors or generators will exhibit virtually the
same maximum continuous shaft torque (i.e., operating torque) within a given
physical size of electromagnetic core. Some applications require bursts of torque
beyond the maximum operating torque, such as short bursts of torque to accelerate an
electric vehicle from standstill. Always limited by magnetic core saturation or safe
operating temperature rise and voltage, the capacity for torque bursts beyond the
maximum operating torque differs significantly between categories of electric motors
or generators.