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Questions tagged [distributed-systems]

A distributed system consists of a collection of autonomous computers, connected through a network and distribution middleware, which enables computers to coordinate their activities and to share the resources of the system, so that users perceive the system as a single, integrated computing facility.

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Is it possible to run a Gazebo Classic simulation distributed across more than one machine?

Currently I'm working on a project where we use ROS2 Humble integrated with Gazebo Classic. One of our goals is to distribute the Gazebo simulation so that the Gazebo world and each robot present on ...
0 votes
1 answer

Why can't I see ROS 2 topics from systemd service when using a Fast DDS server with UDP transport?

I would like to communicate with ROS nodes running in a systemd service. Multicast discovery and shared memory transport cannot be used in this context, so I'm using a discovery server and UDP ...
4 votes
1 answer

How to perform decoupling between decision making and action execution in ROS2?

Hi I'm making a robot using: ros2 foxy OS Ubuntu Linux 20.04.2 LTS (Focal Fossa). Linux 5.8.0-59-generic I built an Action based on the tutorial Building an Action Server and Client. Then expanded ...
1 vote
2 answers

How to configure a DC power distribution bus

If you have a distributed system of DC motors, sensors and microcontrollers, is power usually distributed over a single high volt bus, using DC converters where needed? Or is it typical to implement ...
2 votes
1 answer

What can this picture/data tell?

I've implemented a model of a ball-on-plate plant and am controlling it over a network. Below is the open loop output when excited by successive sinusoidal inputs with increasing frequencies. I know ...
1 vote
4 answers

How many quadcopters would it take to lift a burrito?

I am investigating a possible business opportunity in which quadcopters perform high-precision nutritional delivery via a burrito medium. I have never used a burrito, but I have read on the internet ...
9 votes
2 answers

Shedding light on "cyber-physical systems"

These days, one often hears of cyber-physical systems. Reading on the subject, though, it is very unclear how those systems differ from distributed and/or embedded systems. Examples from Wikipedia ...