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Robotics and Automation Control. Er.Rashmi Assistant Professor GNA University. ROBOTICS. It is ability to perform on its own, going to the extent of unmanning several operations. To relieve man from tedious and mindless, repetitive and hazardous jobs.
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Robotics and Automation Control Er.Rashmi Assistant Professor GNA University
ROBOTICS • It is ability to perform on its own, going to the extent of unmanning several operations. • To relieve man from tedious and mindless, repetitive and hazardous jobs. • Robotics in Inter dispilnary field of study
Important areas of robotics • ?????
Locomotive device • Locomotive Robot series
Functions of ROBOT • SENSING • Decision Making • Performing
Difference between ROBOT and Automated Machine • Automation: the machine produces a job following a set of operational jobs at different times. Different sequence can be addressed by programming.
Robot- is programmable, sensing and perception, function automatically • Carry out different tasks
Advantages and disadvantage • ?????
Types of Robots • General Purpose • Special purpose welding,spray painting Telerobot Mobile robot Autonomous robot Androids
Basic Components of Robots • BASE • MANIPULATOR ARM • END EFFECTORS • ACTUATORS AND TRANSMISSION • CONTROLLER • SENSORS
MANIPULATOR ARM • Revolute pair (R)-1 DOF • Prismatic pair (P)-1 DOF • Cylindrical Pair (C)- 2DOF
End effector • Gripping methods • Mechanical clamping • Magnetic gripping • Vacuum gripping
Actuators and Transmission • Pneumatic drives • Hydraulic drives • Electrical drives
Piezoelectric Actuators http://www.robotplatform.com/knowledge/actuators/types_of_actuators.html
Sensors • Tactile sensors- (contact sensor) must be brought in contact with the object to obtain signals to measure the necessary qualities. • Force sensor, Torque sensors, Touch sensors, Position sensor
Torque sensors • Touch sensors Position sensors
Non tactile sensors • Contactless sensors • Proximity sensors • Electro-optical sensors • Range imaging sensors
Basic Motions 6 motions • Vertical motion • Radial motion • Rotational motion • Pitch motion • Roll motion • yaw
DOF • Horizontal travel • Rotary movement • Radial arm movement • Vertical arm movement • Rotary wrist movement • Wrist bend • Wrist sweep
Robot Classification • Standard classification • Broad classification • General classification
Standard Classification • Mechanical configuration based It considers various joints, links, physical structure of robot and relation to each other. • Cartesian coordinate configuration • Cylindrical configuration • Spherical configuration • Jointed-arm configuration (Revolute)
Control method based it considers the type of techniques implement to control the robot. i.e; 1.Non Servo controlled , 2. Servo controlled
Cartesian coordinate config. • Cartesian or rectilinear robot also called as gantry robot, has three mutually perpendicular axes which defines a rectangular work volume. • Links of manipulator are constrained to move in linear motion. (Prismatic) • Cartesian coordinates may be of two types. • Cantilevered Cartesian • Gantry-style Cartesian
Cylindrical Config. • Arm move up and down • Arm move radially w.r.t The column.Θ=360 not permitted Due to h,e,p connections or lines.
Spherical (polar)configuration • It has telescopic arm, which pivots about a horizontal axis and also rotates about a vertical axis. • Work envelope of such robot is a portion of sphere due to mechanical and actuators connections.