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Questions tagged [sensors]

A sensor (also called detector) is a converter that measures a physical quantity and converts it into a signal which can be read by an observer or by an (today mostly electronic) instrument.

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5
votes
6answers
347 views

Spatial tracking between two UAVs

I have two Unmanned Aerial Vehicles (planes) which work well. They can fly to various waypoints automatically using GPS. Now I would like them to fly together in formation. I would like them to fly ...
16
votes
1answer
2k views

How does a six-axis force/torque sensor work?

I would really like a six-axis force/torque sensor for my robot, but I just can't afford one. I was thinking about making one of my own. I have experience using strain gauges, but I can't work out ...
23
votes
8answers
14k views

Absolute positioning without GPS

Using an IMU a robot can estimate its current position relative to its starting position, but this incurs error over time. GPS is especially useful for providing position information not biased by ...
10
votes
2answers
199 views

How to model the noise in a range sensor's return?

Range sensors (for example sonar, infrared, and lidar) are notoriously noisy. How can I characterize the noise characteristics to include these in a probabilistic localization sensor model?
13
votes
2answers
317 views

How can I detect if a DC motor on a robot is starting to fail?

What characteristics can I look for which could be reliable early warning signs that a DC motor on my robot, say one used for the drive, could be failing? I'm looking for an answer that deals in terms ...