Questions tagged [positions-measurement]

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1answer
72 views

How to determine the angular velocity of the platform as a function of motor rotations per second?

Hello all of you engineering geniuses. Awhile ago a very talented individual on here helped me work out the conceptual mechanics of this design. As you can see from the model, there is a lead screw ...
1
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0answers
31 views

Using complementary filter in rotation matrix

I am using accelerometer and gyroscope and try to compensate earth gravity. I figured out use of complementary filter, that calculates pitch and roll angle. On account of compensating gravity I am ...
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0answers
25 views

How to design a method to estimate vx=speed in direction of swimming

We have a body that goes underwater (let's say a whale) with magnetometer and accelerometer data. I also have GPS, date, depth, pressure and temperature data. I want to know if there is any simple way ...
0
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1answer
75 views

Cheap and accurate angle measurement for PID feedback control

I'm working on a PID-controlled barn door tracker mount for astrophotography in an isosceles configuration: For those not familiar, the purpose of the barn door tracker is to compensate for the ...
1
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1answer
174 views

What are some robust method to detect or repel lizard?

I am working on a HVAC project where lizard in going inside the electrical unit and causing wire damage and short circuit. I need to find some solution to detect or repel lizard before any ...
2
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2answers
513 views

Radio triangulation with Raspberry Pi

Currently, I am thinking that since electromagnetic waves loose energy over distance, you might be able to figure out the relative distance to each of three radio "beacons" and use this information to ...
1
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0answers
36 views

Given Pitch and Roll in one Heading, convert to co-planar pitch and roll for North

I have been pouring through countless articles about Euler's angles, rotation matrices, Rodriguez Rotation Formula, Quaternions, trying to understand how to generate an algorithm for this problem and ...
6
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3answers
2k views

How are tunnels dug from two endpoints joined?

Let's assume I want to build a subway system. I dig two subway stations and now I start digging a tunnel from both of these endpoints simultaneously. How can I ensure that the two tunnels dug from ...
2
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0answers
24 views

Decission between several position switches and one continuos position signal for controling rotating conveyor

We plan a conveyor that will dump something into containers. A level gauge on the tip of the container will measure the heap below. The conveyor is placed on a turntable and will e rotated ...