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Robot Actuation and Motion Planning

Description: This quiz covers the fundamental concepts of Robot Actuation and Motion Planning, including actuation types, motion planning algorithms, and robot dynamics.
Number of Questions: 15
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Tags: robot actuation motion planning robot dynamics
Attempted 0/15 Correct 0 Score 0

Which of the following is not a type of robot actuation?

  1. Hydraulic

  2. Electric

  3. Pneumatic

  4. Mechanical


Correct Option: D
Explanation:

Mechanical actuation is not a type of robot actuation. Hydraulic, electric, and pneumatic are the three main types of robot actuation.

What is the primary function of a robot actuator?

  1. To generate motion

  2. To sense the environment

  3. To process information

  4. To communicate with other robots


Correct Option: A
Explanation:

The primary function of a robot actuator is to generate motion. Actuators convert electrical, hydraulic, or pneumatic energy into mechanical motion.

Which of the following is an example of a rotary actuator?

  1. Linear actuator

  2. Stepper motor

  3. Servo motor

  4. Hydraulic cylinder


Correct Option: B
Explanation:

A stepper motor is an example of a rotary actuator. Stepper motors convert electrical pulses into discrete angular movements.

What is the difference between a closed-loop and an open-loop control system in robotics?

  1. Closed-loop systems use feedback, while open-loop systems do not

  2. Closed-loop systems are more accurate, while open-loop systems are faster

  3. Closed-loop systems are more expensive, while open-loop systems are cheaper

  4. Closed-loop systems are more complex, while open-loop systems are simpler


Correct Option: A
Explanation:

The main difference between a closed-loop and an open-loop control system is that closed-loop systems use feedback to adjust the output based on the error between the desired and actual output.

What is the purpose of motion planning in robotics?

  1. To determine the path of the robot

  2. To control the robot's actuators

  3. To sense the environment

  4. To communicate with other robots


Correct Option: A
Explanation:

The purpose of motion planning in robotics is to determine the path of the robot to reach a desired goal while avoiding obstacles and satisfying constraints.

Which of the following is a global motion planning algorithm?

  1. Dijkstra's algorithm

  2. A*

  3. Rapidly-exploring Random Tree (RRT)

  4. Bug algorithm


Correct Option: A
Explanation:

Dijkstra's algorithm is a global motion planning algorithm that finds the shortest path from a start to a goal position in a grid-like environment.

What is the primary advantage of using a Rapidly-exploring Random Tree (RRT) for motion planning?

  1. It is a global motion planning algorithm

  2. It is a local motion planning algorithm

  3. It is computationally efficient

  4. It is easy to implement


Correct Option: C
Explanation:

The primary advantage of using a Rapidly-exploring Random Tree (RRT) for motion planning is that it is computationally efficient.

What is the main challenge in robot dynamics?

  1. Modeling the robot's environment

  2. Determining the robot's motion

  3. Controlling the robot's actuators

  4. Computing the robot's inverse kinematics


Correct Option: A
Explanation:

The main challenge in robot dynamics is modeling the robot's environment, which includes obstacles, friction, and other physical properties.

What is the relationship between robot actuation and motion planning?

  1. Robot actuation provides the power for motion planning

  2. Motion planning determines the path for robot actuation

  3. Robot actuation and motion planning are independent of each other

  4. Robot actuation and motion planning are always performed simultaneously


Correct Option: B
Explanation:

Motion planning determines the path for robot actuation. Robot actuation provides the power to move the robot along the planned path.

Which of the following is an example of a constraint in robot motion planning?

  1. Joint limits

  2. Collision avoidance

  3. Time constraints

  4. Energy constraints


Correct Option:
Explanation:

All of the given options are examples of constraints in robot motion planning.

What is the purpose of using a Jacobian matrix in robot dynamics?

  1. To compute the robot's forward kinematics

  2. To compute the robot's inverse kinematics

  3. To compute the robot's velocity and acceleration

  4. To compute the robot's torque and force


Correct Option: C
Explanation:

The Jacobian matrix is used in robot dynamics to compute the robot's velocity and acceleration.

Which of the following is a type of feedback control in robotics?

  1. Proportional control

  2. Integral control

  3. Derivative control

  4. All of the above


Correct Option: D
Explanation:

All of the given options are types of feedback control in robotics.

What is the purpose of using a PID controller in robot control?

  1. To reduce steady-state error

  2. To improve transient response

  3. To increase stability

  4. All of the above


Correct Option: D
Explanation:

The purpose of using a PID controller in robot control is to reduce steady-state error, improve transient response, and increase stability.

Which of the following is not a type of robot motion planning algorithm?

  1. Dijkstra's algorithm

  2. A*

  3. Rapidly-exploring Random Tree (RRT)

  4. Fuzzy logic


Correct Option: D
Explanation:

Fuzzy logic is not a type of robot motion planning algorithm. Dijkstra's algorithm, A*, and Rapidly-exploring Random Tree (RRT) are all examples of robot motion planning algorithms.

What is the difference between forward kinematics and inverse kinematics in robotics?

  1. Forward kinematics computes the robot's position from its joint angles, while inverse kinematics computes the robot's joint angles from its position

  2. Forward kinematics is used for motion planning, while inverse kinematics is used for robot control

  3. Forward kinematics is more complex than inverse kinematics

  4. Forward kinematics is less computationally expensive than inverse kinematics


Correct Option: A
Explanation:

The main difference between forward kinematics and inverse kinematics is that forward kinematics computes the robot's position from its joint angles, while inverse kinematics computes the robot's joint angles from its position.

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