Robotics: Computational Motion Planning

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Robotics: Computational Motion Planning

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Opleiderscore: starstarstarstar_halfstar_border 7,2 Coursera (CC) heeft een gemiddelde beoordeling van 7,2 (uit 6 ervaringen)

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Beschrijving

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About this course: Robotic systems typically include three components: a mechanism which is capable of exerting forces and torques on the environment, a perception system for sensing the world and a decision and control system which modulates the robot's behavior to achieve the desired ends. In this course we will consider the problem of how a robot decides what to do to achieve its goals. This problem is often referred to as Motion Planning and it has been formulated in various ways to model different situations. You will learn some of the most common approaches to addressing this problem including graph-based methods, randomized planners and artificial potential fields. Throughout the…

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When you enroll for courses through Coursera you get to choose for a paid plan or for a free plan

  • Free plan: No certicification and/or audit only. You will have access to all course materials except graded items.
  • Paid plan: Commit to earning a Certificate—it's a trusted, shareable way to showcase your new skills.

About this course: Robotic systems typically include three components: a mechanism which is capable of exerting forces and torques on the environment, a perception system for sensing the world and a decision and control system which modulates the robot's behavior to achieve the desired ends. In this course we will consider the problem of how a robot decides what to do to achieve its goals. This problem is often referred to as Motion Planning and it has been formulated in various ways to model different situations. You will learn some of the most common approaches to addressing this problem including graph-based methods, randomized planners and artificial potential fields. Throughout the course, we will discuss the aspects of the problem that make planning challenging.

Created by:  University of Pennsylvania
  • Taught by:  CJ Taylor, Professor of Computer and Information Science

    School of Engineering and Applied Science
Basic Info Course 2 of 6 in the Robotics Specialization Language English How To Pass Pass all graded assignments to complete the course. User Ratings 4.1 stars Average User Rating 4.1See what learners said 课程作业

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University of Pennsylvania The University of Pennsylvania (commonly referred to as Penn) is a private university, located in Philadelphia, Pennsylvania, United States. A member of the Ivy League, Penn is the fourth-oldest institution of higher education in the United States, and considers itself to be the first university in the United States with both undergraduate and graduate studies.

Syllabus


WEEK 1


Introduction and Graph-based Plan Methods



Welcome to Week 1! In this module, we will introduce the problem of planning routes through grids where the robot can only take on discrete positions. We can model these situations as graphs where the nodes correspond to the grid locations and the edges to routes between adjacent grid cells. We present a few algorithms that can be used to plan paths between a start node and a goal node including the breadth first search or grassfire algorithm, Dijkstra’s algorithm and the A Star procedure.


5 videos, 4 readings expand


  1. Video: 1.1: Introduction to Computational Motion Planning
  2. 阅读: Computational Motion Planning Honor Code
  3. 阅读: MATLAB Tutorial I - Getting Started with MATLAB
  4. 阅读: Resources for Computational Motion Planning
  5. Video: 1.2: Grassfire Algorithm
  6. Video: 1.3: Dijkstra's Algorithm
  7. Video: 1.4: A* Algorithm
  8. 阅读: MATLAB Tutorial II - Programming
  9. Video: Getting Started with the Programming Assignments

Graded: Graph-based Planning Methods
Graded: Graph-based Planning

WEEK 2


Configuration Space



Welcome to Week 2! In this module, we begin by introducing the concept of configuration space which is a mathematical tool that we use to think about the set of positions that our robot can attain. We then discuss the notion of configuration space obstacles which are regions in configuration space that the robot cannot take on because of obstacles or other impediments. This formulation allows us to think about path planning problems in terms of constructing trajectories for a point through configuration space. We also describe a few approaches that can be used to discretize the continuous configuration space into graphs so that we can apply graph-based tools to solve our motion planning problems.


6 videos, 1 reading expand


  1. Video: 2.1: Introduction to Configuration Space
  2. Video: 2.2: RR arm
  3. Video: 2.3: Piano Mover’s Problem
  4. 阅读: Setting Up your MATLAB Environment
  5. Video: 2.4: Visibility Graph
  6. Video: 2.5: Trapezoidal Decomposition
  7. Video: 2.6: Collision Detection and Freespace Sampling Methods

Graded: Configuration Space
Graded: Configuration Space

WEEK 3


Sampling-based Planning Methods



Welcome to Week 3! In this module, we introduce the concept of sample-based path planning techniques. These involve sampling points randomly in the configuration space and then forging collision free edges between neighboring sample points to form a graph that captures the structure of the robots configuration space. We will talk about Probabilistic Road Maps and Randomly Exploring Rapid Trees (RRTs) and their application to motion planning problems.


3 videos expand


  1. Video: 3.1: Introduction to Probabilistic Road Maps
  2. Video: 3.2: Issues with Probabilistic Road Maps
  3. Video: 3.3: Introduction to Rapidly Exploring Random Trees

Graded: Sampling-based Methods
Graded: Random Sampling-based Approaches

WEEK 4


Artificial Potential Field Methods



Welcome to Week 4, the last week of the course! Another approach to motion planning involves constructing artificial potential fields which are designed to attract the robot to the desired goal configuration and repel it from configuration space obstacles. The robot’s motion can then be guided by considering the gradient of this potential function. In this module we will illustrate these techniques in the context of a simple two dimensional configuration space.


4 videos expand


  1. Video: 4.1: Constructing Artificial Potential Fields
  2. Video: 4.2: Issues with Local Minima
  3. Video: 4.3: Generalizing Potential Fields
  4. Video: 4.4: Course Summary

Graded: Artificial Potential Fields
Graded: Gradient-based Planner

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