Arulmigu Meenakshi Amman College of Engineering
Vadamavandal-604410.
Important questions and answers
MR3691- ROBOTICS
Prepared by
V.Umapathy,
Prof. /Mech.
S.No. Questions and answers
Unit-I
BASICS OF ROBOTICS
2 – marks question and answers
1. What are the basic components of a robot system?
Manipulators.
End Effectors.
Feedback Devices.
Controllers.
Locomotive Devices.
2. Who introduced three laws of robotics?
writer Isaac Asimov
Back in 1942, before the term was even coined, the science fiction writer Isaac Asimov wrote The Three
Laws of Robotics: A moral code to keep our machines in check. And the three laws of robotics are: a robot
may not injure a human being, or through inaction allow a human being to come to harm.
3. What are the classifications of robots in detail?
A simpler, more complete definition of robotic types can be narrowed down to five types: Cartesian,
, Cylindrical, SCARA, 6-Axis, and Delta. Each industrial robot type has specific elements that make them
best suited for different applications. The main differentiators among them are their speed, size, and
workspace.
4. What is the robot architecture?
Robot architecture consists of several key components: 1) A power supply that provides energy through
batteries or an adapter. 2) Actuators like motors that convert electrical energy to mechanical movement. 3)
Sensors that examine the environment through technologies like vision, sound, and touch.
5. What is the workspace of a robot?
The workspace is a specification of the configurations that the end-effectors of the robot can reach, and has
nothing to do with a particular task. For example, a planar robot with 2 revolute joints, limited to ranges of
motion of 180 and 150 degrees, has the workspace shown here.
6. What is robot precision?
Robot precision refers to consistently repeating the same movement, ensuring reliability in tasks that
require repetitive action. Precision is about consistency in performance over multiple attempts, even if
there's a slight variation in the final position.
7. How to improve robot accuracy?
1. Develop a mathematical model.
2. Take measurements of the end-effector's pose.
3. Identify error parameters that minimize Cartesian errors in the measurements.
4. Update the robot's signature in the robot controller.
Validate the accuracy through additional measurements.
8. What is accuracy repeatability and resolution?
Accuracy: How close a measurement is to the actual value? Repeatability: How close a group of
, measurements are to each other. Resolution: The smallest difference that can be measured.
9. What is the repeatability of a robot?
A robot's repeatability is its ability to return to the same programmed position multiple times. It's a
measure of the robot's precision.
10. How is repeatability measured?
A robot is moved to a taught position multiple times.
The error is measured each time the robot returns to the position.
The standard deviation of the samples in all three dimensions is used to quantify the repeatability.
Repeatability in industrial robots
, Industrial robots typically have high repeatability, between 0.01 mm and 0.1 mm.
Repeatability varies from model to model.
Repeatability is a key factor in the success of automation processes.
Repeatability vs. accuracy
Repeatability is the consistency of measurements under the same conditions.
Accuracy is the robot's ability to perform a movement and achieve the exact intended result without online
teaching.
13 and 15 marks question and answers
11. Explain in detail about basic components of robotic system.
Vadamavandal-604410.
Important questions and answers
MR3691- ROBOTICS
Prepared by
V.Umapathy,
Prof. /Mech.
S.No. Questions and answers
Unit-I
BASICS OF ROBOTICS
2 – marks question and answers
1. What are the basic components of a robot system?
Manipulators.
End Effectors.
Feedback Devices.
Controllers.
Locomotive Devices.
2. Who introduced three laws of robotics?
writer Isaac Asimov
Back in 1942, before the term was even coined, the science fiction writer Isaac Asimov wrote The Three
Laws of Robotics: A moral code to keep our machines in check. And the three laws of robotics are: a robot
may not injure a human being, or through inaction allow a human being to come to harm.
3. What are the classifications of robots in detail?
A simpler, more complete definition of robotic types can be narrowed down to five types: Cartesian,
, Cylindrical, SCARA, 6-Axis, and Delta. Each industrial robot type has specific elements that make them
best suited for different applications. The main differentiators among them are their speed, size, and
workspace.
4. What is the robot architecture?
Robot architecture consists of several key components: 1) A power supply that provides energy through
batteries or an adapter. 2) Actuators like motors that convert electrical energy to mechanical movement. 3)
Sensors that examine the environment through technologies like vision, sound, and touch.
5. What is the workspace of a robot?
The workspace is a specification of the configurations that the end-effectors of the robot can reach, and has
nothing to do with a particular task. For example, a planar robot with 2 revolute joints, limited to ranges of
motion of 180 and 150 degrees, has the workspace shown here.
6. What is robot precision?
Robot precision refers to consistently repeating the same movement, ensuring reliability in tasks that
require repetitive action. Precision is about consistency in performance over multiple attempts, even if
there's a slight variation in the final position.
7. How to improve robot accuracy?
1. Develop a mathematical model.
2. Take measurements of the end-effector's pose.
3. Identify error parameters that minimize Cartesian errors in the measurements.
4. Update the robot's signature in the robot controller.
Validate the accuracy through additional measurements.
8. What is accuracy repeatability and resolution?
Accuracy: How close a measurement is to the actual value? Repeatability: How close a group of
, measurements are to each other. Resolution: The smallest difference that can be measured.
9. What is the repeatability of a robot?
A robot's repeatability is its ability to return to the same programmed position multiple times. It's a
measure of the robot's precision.
10. How is repeatability measured?
A robot is moved to a taught position multiple times.
The error is measured each time the robot returns to the position.
The standard deviation of the samples in all three dimensions is used to quantify the repeatability.
Repeatability in industrial robots
, Industrial robots typically have high repeatability, between 0.01 mm and 0.1 mm.
Repeatability varies from model to model.
Repeatability is a key factor in the success of automation processes.
Repeatability vs. accuracy
Repeatability is the consistency of measurements under the same conditions.
Accuracy is the robot's ability to perform a movement and achieve the exact intended result without online
teaching.
13 and 15 marks question and answers
11. Explain in detail about basic components of robotic system.
