Community Digest

Top new questions this week:

How does loop closure backpropagate the robots states into prior times?

I have read some about loop closure and I am somewhat confused. Suppose we implement something like EKF slam using LIDAR and suppose loop closure is aided by computer vision based features so that if ...

slam localization  
asked by FourierFlux 2 votes

UKF for radar implementation

I'm struggling to implement Unscented Kalman Filter for tracking objects using radar. My state vector contains [x y z vx vy vz] and I can measure [rho phi theta velocity]. So everything looks trivial ...

ros kalman-filter radar  
asked by Victoria Kepler 1 vote

Greatest hits from previous weeks:

How to select cameras for a stereo vision system?

I am in the process of building a stereo vision system to be used on a UGV. The system is for a robot that will be used in a competition wherein the robot is teleoperated to find relatively small ...

computer-vision stereo-vision cameras  
asked by DaemonMaker 20 votes
answered by Jakob 11 votes

Quadcopter PID output

I'm trying to develop a control system to a quadcopter and one of my options is to use a PID controller (which I think is the most used method). From what I've read, the commom strategy is to run a ...

quadcopter pid  
asked by FELIPE_RIBAS 4 votes
answered by marcv81 3 votes

What's the difference between a sonar and ultrasonic sensor?

After having read the introductions of the Wikipedia articles about "sonar" and "ultrasonic sensor", it is still not clear to me what the differences between the two are. In the context of robotics, ...

sensors ultrasonic-sensors sonar  
asked by nbro 1 vote
answered by NomadMaker 2 votes

What is the difference between motion planning and trajectory generation?

What are the major differences between motion planning and trajectory generation in robotics? Can the terms be used interchangeably?

motion-planning  
asked by Ratan Sadanandan O M 7 votes
answered by Petch Puttichai 1 vote

How do the PID parameters (Kp, Ki, and Kd) affect the heading of a differential driving robot when they are increased individually?

Question: A PID controller has three parameters Kp, Ki and Kd which could affect the output performance. A differential driving robot is controlled by a PID controller. The heading information is ...

pid wheeled-robot differential-drive  
asked by Dan 3 votes
answered by Andy 9 votes

what's the difference among rgb-d camera, depth camera, 3d camera, and stereo camera?

I'm very new in this field so my question may be very stupid. I apologize for this at first. I'm trying to use a proper camera to run a SLAM algorithm. As suggested by some people, stereo camera may ...

cameras  
asked by gladys0313 3 votes
answered by FooTheBar 9 votes

What is the difference between path planning and motion planning?

What are the main differences between motion planning and path planning? Imagine that the objective of the algorithm is to find a path between the humanoid soccer playing robot and the ball which ...

mobile-robot motion-planning humanoid  
asked by Pooya Sagharchi 18 votes
answered by Bending Unit 22 26 votes
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