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Questions tagged [position]

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How does this linear actuators know absolute position of their carriages?

As title, I can't find out how main system of this linear actuators knows each carriage absolute position. This system is iTRACK from Rockwell, but there are some other brands that do this. Here an ...
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13 views

How can we simulate an AC position control system in simulink?

The final feedback loop which I got is the following How can I implement this using Simulink?
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0answers
25 views

Hall IC current sensors can work for positioning measurement?

I recently posted a related question but this question seems to be requiring its own thread. There are available closed loop Hall IC current sensors which detects currents passing through conductors. ...
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1answer
55 views

µC control of a force testing machine

At work we have a machine that is used for testing and calibrating force sensors. It basically consists of a huge lever that is actuated by an electric motor with a gear reduction and a calibrated ...
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43 views

Can you identify this type of switch? Need to replace it

This is hopefully just a simple one to fill in my inexperience. I have a busted rotary switch that I'm trying to replace and I feel like I cannot find one for the life of me, can you tell me what this ...
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3answers
148 views

Detect drones passing through hula-hops

I host some drone races at times and I make gates with hula-hops. I fit some led stripes in there and they glow nicely. We ONLY run micro drones, F36, tinny whoop and those. And mostly indoors (...
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0answers
153 views

Measure relative position between two IMUs

I'm trying to create a system where I need to measure the relative orientation of the edge of the arm with respect to its base: The apparatus will be like in the diagram above. To measure the ...
2
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1answer
56 views

IR emmiter and reciever layouts for custom sensor

I'm having a hard time designing a PCB for a sensor array that need to detect if there is a small reflective object (3-20 mm section) in the way. That object can slowly rotate around a shaft. I have ...
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1answer
60 views

How to move a magnet to a specific coordinate on a board

I was just reading about Claude Shannon's famous maze-solving mouse, Theseus, which used a movable magnet under the maze to draw the mouse in a given direction. I'd like to play around with this idea. ...
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0answers
49 views

Sensor that identifies the number of objects in a stack of casino chips

I am not a technical person so please bare with me and don't laugh of my technical descriptions or wording. I'm working on a new invention that requires a sensor to identify the number and position of ...
3
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2answers
950 views

What is the main reason for using speed feedback in a motor positioning control system?

This question is not to solve a particular problem but rather one of principle to understand the main reason a designer would want to include speed feedback in a motor controlled positioning system. ...
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1answer
80 views

Voltage regulator position

Hello if unregulated power supply (transformer, bridge and main caps) is 30 cm away from the circuit to feed, is it better to put the voltage regulator close to the circuit (long input and short ...
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1answer
116 views

How can we achieve position accuracy with simple worm gear box. [closed]

I am also proposing to use simple 40:1 ratio worm gear box with Input servo motor. I am having a dial of 1600mm diameter on output of the gear box which will rotate only in clockwise direction at max ...
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3answers
338 views

SSD1306 I2C: Draw only changes works however on wrong position, how to set position (command)?

I create an OLED display class for the SSD1306 and how it works is pretty straight forward. The display is buffered (offscreen method) and at performing an update, it 'dumps' the buffer to the display ...
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1answer
112 views

acceleration sensor gives wrong values

I try to measure distances with the 3 axis accelerometer that is part of the lsm9ds1. therefore i measure the acceleration in x-axis and y-axis every 5ms and double integrate it over the time. I can ...
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1answer
1k views

Measuring the angle to an object using IR sensors?

I would like to be able to use IR emitter/receivers to measure the ANGLE to an object. As far as I am aware this is how the Sharp IR distance sensors work, by using triangulation to measure the angle ...
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3answers
2k views

In theory, is the position derived from accelerometer absolute?

I recently found multiple research papers that say that in theory double integral of accelerometer data gives a position of the device. Does that refer to absolute position (like the one given by a ...
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2answers
165 views

Tracking position of juggling balls

I am working on a performance art project in which I want to track the position of juggling balls as they are thrown in the air. The idea is to output a sonification of the ball's position in the air ...
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1answer
64 views

Determening the location of a ball contacting a surface

I'm a student currently working on a project. I have two objects, one of which is a plastic ball. The other is a rectangle which is being hit with said ball. My goal is to detect a position of a hit. ...
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1answer
229 views

Maintaining fixed shaft position of BLDC/PMSM

I intend to control the position and speed of a BLDC motor (still to be selected) using field oriented control (FOC) and an Encoder to determine shaft position and speed. From what I understand from ...
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1answer
143 views

Speed and position controle of a BLDC motor at the same time

I want to know if it is physically possible for a BLDC motor to be controlled in speed and position at the same time. Let me clarify : while the rotor is spinning (speed control), is it possible to ...
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5answers
2k views

Using a potentiometer to replace an absolute optical encoder

I am trying to replace a rotary absolute optical encoder (single turn). The resolution of the encoder is 13 bits (8191). The reason for the replacement is to reduce the cost. My approach is to get a ...
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1answer
95 views

Precision positioning system

I'm looking for a sensor that can track its own position in 3D with an absolute accuracy of around 0.5inch over a 50-100ft area. I think this is better than what GPS or inertial tracking can ...
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2answers
443 views

How to locate my cats in my house? [closed]

I have two cats and want to track in which of the 6 rooms of my flat (about 96 square meters) they currently are. Later I would like to trigger an alarm if they get into a "forbidden" room. The cats ...
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3answers
164 views

How accurate is a single GPS at detecting distance traveled?

I read that consumer grade GPS is accurate 5-10 meters at resolving global positioning coordinates. However, my question is how accurate is consumer grade GPS at detecting distance traveled. For ...
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1answer
667 views

Triangulation Vibration Sensor Impact Detection Position

I am working on a project to detect the position of an impact using three vibration sensors each one of them linked to a micro-controller(in my case STM32F4) . Using ADC and UART ,I can plot with a ...
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4answers
741 views

sensor to detect rope position, as it nears the end of the line retreval

I have built a winch for a 4wd, to race with. I would like suggestions on a sensor to detect rope position as it nears the end of the line retrieval. Not at the drum end, as that may vary. Something ...
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1answer
49 views

static position and orientation sensing

I have an application to sense magnetic north and position. GPS works well for position but cannot determine orientation without spinning the object 3 times. My application is stationary and I cannot ...
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2answers
73 views

Best Hardware for Accurate Point Tracking System

Here is what I am trying to accomplish: In the middle of a room, I have a mechanism with a laser diode mounted on it that can be moved in all axis by a motorized pan/tilt head type device. This ...
3
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1answer
2k views

Determining an aproximate position through triangulation

Disclaimer: I'm relatively new to electronics (although not to programming) so please excuse my ignorance. First of all I should state that I'm aware there are already multiple, well answered posts ...
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1answer
617 views

Does position error from accelerometer still build up quadratically when using Kalman filtering?

I want to implement an inertial navigation system that uses a basic IMU for indoor position tracking. From all the things I've read you need to assist the IMU with something like GPS or other means of ...
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4answers
333 views

Best methods for long term position tracking?

I am in the beginning stages of development for a project where I need to continuously track the position of an object for long amounts of time. The object will not move very much, but when it does I ...
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1answer
75 views

potentiometric position sensor

I would like to wire my position sensor (Datasheet) into Arduino. I plan to connect it with Arduino 5V supply and then read analog input values. It is potentiometric sensor and has 3 wires. After ...
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1answer
2k views

outdoor ultra sound positioning system robotic lawn mower [duplicate]

I have a dream to build robotic lawn mower that uses a positioning system, so that can cut grass once and effective. Building the robotic lawn mower is not a problem, but the navigation system is, so ...
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2answers
406 views

Recording motion/movement sequence efficiently & accurately

We have a motion platform (camera - pan & tilt) that is controlled by a user using a joystick (so the demand inputs are pan & tilt velocities). The platform itself uses stepper motors, so we ...
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4answers
2k views

What are my options for detecting the position of a small moving metal object?

This is an airgun pellet trap: I fire small metal pellets at it (4.5mm = .177" in diameter) at up to 120 m/s = 390 fps. What are my options for detecting the X / Y position at which it enters the ...
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1answer
3k views

Feasability of an Arduino indoor positioning system using BLE

Our project is to guide a blind person in a known environment (here it's an exposition hall), and we need to have a precise way of figuring out where the user is. Our current solution is to use ...
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1answer
226 views

Reading a resolver sensor with a long cable

I am trying to read a resolver sensor attached to a stepper motor through a long cable (500 meters). More specifically with a resolver to digital converter. However I get an error respect to the ...
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0answers
336 views

what is an affordable indoor 3D positioning sensor setup?

I have a question regarding a problem that seems easy, but after already doing some internet searches, seems not to be that easy to solve. I have a non-moving test setup in a large room where I have ...
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1answer
64 views

can I wire a ceiling fan to a 4 DP toggle switch?

I want to re-purpose a ceiling fan motor and would like to have each of the three speeds available on their own switch (or position on a toggle). Is this possible? and if so how should I go about this?...
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3answers
617 views

Violin bow position tracking with SMD LEDs and photoresistors

Objective: Marking labels indicating the positions of the violin bow on an acoustic signal, for example, a single musical note played by a full-length bow. The following video shows the example I am ...
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2answers
672 views

How can I achieve cm accuracy for x,y,z outdoors positioning

How can I achieve cm or less accuracy for x,y,z outdoor positioning contained inside a 100 meter cube (bigger the better but this is minimum). I do not care if I need external beacons/sensors or ...
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1answer
911 views

Relative position of three sensors [closed]

I am mechanical engineer with very little knowledge of electrical engineering. I am working on a project where I need two have two sensors, one on each shoe to track the motion of the feet, and a ...
6
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3answers
9k views

GPS Antenna | When is an Active Antenna really Necessary?

Many vendors provide positioning modules that support active antennas as well as ones that don't. I am using 4 positioning modules out of which 3 of them support active antennas and the other , CC4000 ...
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2answers
271 views

Suggestion regarding position sensing in a motor operated shaft

I'm driving an 24V DC motor through an H-Bridge back and forth, in order to position a part of my mechanical app. The motor actuates a shaft which has the said part moving according to the shaft's ...
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2answers
2k views

Building an RSSI map for an indoor positioning system

As I study so far, Indoor positioning mechanisms are built with two approaches: Trilateration, triangulation: Directly calculate/compute position with signal fading/RSII data which mobile device ...
3
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1answer
436 views

Speed and Position Control for high-volt Elektro Motor with AVR

Is there anything that one can purchase to control speed and position of a high voltage electro motor? I am quite a bit of a noob at this but I could think of a circuit using photo-sensors or hal-...
2
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1answer
460 views

How do I use the measurements from the datasheet to create a footprint?

I'm trying to make a footprint for a MPU-6050 6-axis gyroscope and accelerometer. I've added the first 12 pins (out of 24), but now I don't know how to proceed. PCB dimesnions: I've added pin 1-6 ...
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4answers
1k views

Position tracking system for frisbee

I'm trying to build a smart frisbee for use in Ultimate. I'd like to be able to track the position of the frisbee in a playing field with pretty good accuracy (within ~2ft). GPS is a possibility, but ...
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3answers
3k views

3D accurate position sensing of a point

I want to sense the 3D position of an object with respect to some fixed reference. The position of the point will be within a meter of the reference. The accuracy should be very high, possibly within ...