Questions tagged [robotics]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
0 votes
0 answers
22 views

To design the system of a rectangular small shaft moving in and out in a completely mechanical way without remote control

In my setup , I have designed a system in which a body will rotate and execute rectilinear motion down the screw along its thread . upon reaching the bottom most point I want to make a system in which ...
user avatar
0 votes
0 answers
10 views

Integration Error solutions?

Why does stopping the integration of the error while the motors are saturated minimise the effects of integrator windup. Also why can we not reset the integral to 0 completely before motors are ...
user avatar
0 votes
0 answers
36 views

Can anyone answer why the below Quadruped robot body jumping abruptly in the solidwork motion analysis study?

enter image description here enter image description here Hello, I was trying to study a Quadruped Robot bounding gait motion like WildCat Robot in the SolidWorks motion Analysis.Where my basic ...
user avatar
0 votes
0 answers
14 views

Simplest way to maintain speed of motor? Type of motor for application, speed control required, power supply, etc

I am currently designing a mechanism that will do something like this. The rotating disk will be connected to a motor via shaft coupling. I am going to have a cylinder going through the bore in the ...
user avatar
1 vote
1 answer
33 views

Artificial Muscles for a Robotic Hand

I would like to build a robotic hand. Suppose all of the finger movement is controlled by a set of strings that are attached near the joints of some 3d printed skeleton hand and all exit through the ...
user avatar
0 votes
1 answer
10 views

Is the DOF for a robot mechanism invariant if it is not in a different configuration?

I understand that if the robot is reconfigured, it can potentially change the DOF, but would the degrees of freedom for the robot also change if specific links were fixed and as such specific joints ...
user avatar
0 votes
1 answer
41 views

Digital servo for my robot arm?

I'm planning on using this servo for my robotic arm project: Amazon link. It's a digital servo with 35 kg-cm (3.4 Nm) torque. However, when looking at other robotic arm projects, I've mainly seen ...
user avatar
0 votes
0 answers
23 views

Kalman Filter in Real Life

If I want to implement an Unscented Kalman Filter in real life, let's say, for a robotic arm. Do I need to find the model of the robot arm, or is it enough to use only the measurements that I have ...
user avatar
0 votes
0 answers
16 views

What camera specs should I look at for smart vision applications?

Currently I'm looking for a camera to work as a 360-degree view of a vehicle but also be used for smart applications, specifically I'm trying to identify certain objects. The 360-degree systems I've ...
user avatar
0 votes
2 answers
82 views

Calculating Torque With a Second Arm Attached to the Main Arm

I am working on some code that will handle the arm of a robot, and I want to be able to hold the arm in place against the force of gravity. The arm is in 2 parts just like a human arm and I intend to ...
user avatar
2 votes
0 answers
36 views

Relationship between the infinity norm of estimation error and the trace of estimation error covariance matrix in Kalman filter

I am working on designing an interconnected distributed control system. In this system, I need to use Kalman filter because the measurements are noisy. I have two questions: 1 - What is the ...
user avatar
0 votes
1 answer
43 views

What does a dual bearing motor mounting system look like?

I came across the following excerpt about how to mount wheels: The most robust system is the dual bearing system. In this, the wheel axle is mounted on two bearings and chain driven. This takes all ...
user avatar
0 votes
3 answers
59 views

How to maximize strength/torque of a joint?

I'm an elec engineering student and so mechanics isn't my best field, apologies if the question is straightforward. If i have a robotic joint (e.g elbow or knee). What are the best methods for ...
user avatar
0 votes
0 answers
28 views

Rigid-flexible multibody dynamic coupling terms

Suppose a multibody consisting a rigid and a flexible parts. When the rotation dynamic of the rigid and flexible part are derived, we see angular acceleration of rigid part, $\ddot{\theta}$ in ...
user avatar
  • 53
0 votes
4 answers
88 views

Is this kind of steering possible?

I would like to build a small robot and was wondering if a particular configuration of steering would even be possible and stable. What I would like is to have the two rigid axles mounted on a ...
user avatar
1 vote
2 answers
98 views

Torque Required From Motor For a Project

The device I am building is responsible for supporting 200 lbs and is required to accelerate 10 feet per second. The device will have two 8 inch diameter wheels. I have worked out what I believe to be ...
user avatar
0 votes
1 answer
38 views

Required Motor Torque [duplicate]

I am interested in constructing an robot which will be responsible for supporting a 200 pound load. There will be four wheels and the diameter of the wheels are 8 inches. The robot will be required to ...
user avatar
0 votes
0 answers
27 views

What sort of torque does my motor need?

I have a cylinder that's 14 inches in diameter, 32 inches tall, and I will be connecting a motor to the center point at the end of the cylinder via a driveshaft that runs the length of the cylinder. ...
user avatar
  • 1
0 votes
2 answers
63 views

Rubber tracks for robots

I have to manufacture a tracked robot weighing nearly 40 Kg's and the operation is mostly on rusted metal surface. I will be using 2 rubber(1 in*30 in)tracks for movement but I'm worried it will wear ...
user avatar
0 votes
0 answers
47 views

Is there an equation that can automatically tune a PID controller?

Is there an equation that can automatically tune PID controllers? or do I have to do manually/make an AI to do it for me?
user avatar
2 votes
1 answer
49 views

Kollmorgen TBM frameless motor material

I am an undergraduate student in electromagnetics. I am analyzing and researching Kollmorgen TBMS series motors. What I am curious about is why its motors are wrapped with a "shell" around ...
user avatar
  • 21
0 votes
2 answers
103 views

3DOF Stewart platform, how is this movement possible?

I'm trying to make my own 3DOF Stewart platform, to make ball balancing control. I've been struggling with the math for a while now and I've done some research in several places and I don't get how is ...
user avatar
  • 1
0 votes
0 answers
24 views

Optimizing error for PID based control of Line Following Robot

I am working to find the optimal PID gains of my line following robot. To do this, I need to optimize any performance index dependent on the error (a typical example is the integral absolute error). ...
user avatar
1 vote
0 answers
277 views

How to get the performance index ISE and IAE for a Matlab-Simulink designed Line Follower Robot with PID control?

I am researching a method to determine the optimal PID gains for a line follower robot. The problem is, I don't know how to setup the performance index IAE and ISE in the matlab. Any tips on how to do ...
user avatar
2 votes
0 answers
32 views

inverse kinematic of modified Rodriquez parameters

as you know, the attitude of a robot is represented using many ways, euler angles, quaternion, rodriquez parameters, and so on. I should use rodriquez representation in a problem formulated same as a ...
user avatar
  • 53
0 votes
0 answers
32 views

Brainstorming ways to water seal a submarine with a protruding instrument?

I am currently working on a submarine that has a flat face at one end made of 1/2" acrylic. Currently, there is a 12mm glass sensor that protrudes through a hole in the acrylic face and I am ...
user avatar
  • 1
1 vote
0 answers
50 views

What is a good approach on creating a custom robotics gearbox

I would like to put together a custom gearbox of the scale of around 50mmx30mmx30mm to fix a gadget that I am designing. My question is how should I approach producing this? Should I design components ...
user avatar
1 vote
0 answers
37 views

Trapezoidal screw usage on robot arm rods [closed]

I'd like to build toy on picture - uStepper/EEzy robot arm. I'm little bit afraid of plastic gears - backslash, weakness, noise... Do you think trapezoidal screw will perform better when I use them on ...
user avatar
  • 111
1 vote
1 answer
52 views

What is the difference between the power lines, USB lines, Signal, and PWM lines in a slip ring?

I'm currently sourcing a slip ring for a robotics gimbal I'm working on, and I'm not too sure how to properly source one. Currently, I need a slip ring capable of transmitting USB 3.0 data alongside ...
user avatar
1 vote
0 answers
40 views

Jacobians and Manipulator Dynamics

This is a Stanford Manipulator I started off working on it by initially setting up the DH table Transformation Matrix and then Homogeneous Transformation Matrix I started finding the linear and ...
user avatar
2 votes
0 answers
61 views

Interpretation of Integral of Differential 3-Form over 3-Manifold in Engineering?

[This is a repost of https://math.stackexchange.com/questions/4164258/interpretation-of-integral-of-differential-3-form-over-3-manifold-in-engineering.] So, the standard interpretation of a ...
user avatar
1 vote
1 answer
256 views

Push-to-eject mechanism

I'm currently designing some small-scale robots capable of both melee and laser-tag combat. For the melee component, I'd like to create small, ejectable panels that hide the laser-tag receivers. When ...
user avatar
0 votes
2 answers
245 views

How can I calculate a robotic arm's maximum reach?

I have the Fanuc robotic M-2000iA/2300 data sheet in which it is being told that its maximum reach is 3734 mm and its payload capacity is 2300 kg, so how is its maximum reach being calculated and in ...
user avatar
0 votes
2 answers
53 views

Mechanically increase motor torque

An electrical engineer here. Using a stepper motor for a robotic arm. A stepper motor at the base of the arm has a max holding torque of 6kgcm. The arm is around 30cm in length from this base motor ...
user avatar
0 votes
2 answers
47 views

Gear configuration for a legged hexapod

I have an assignment for my Mobile Robotics course to design the drive mechanism for a legged hexapod and demonstrate its gait in motion. The idea is to design the hexapod as per the following ...
user avatar
0 votes
1 answer
47 views

Does any know what kind of pump "Colossus" used for saving the Notre Dame Cathedral?

Does any know what kind of water pump the French Firefighting Robot Colossus used to Help Save Burning Notre Dame Cathedral? What kind of water pumps do fire fighting vehicle use or fire fighting ...
user avatar
0 votes
2 answers
87 views

How to model robotic wires behavior in solidworks

I'm trying to create a block or anything else in soildworks that I can move and see the compression of the lower wire further from the arm Something like this The example show just one joint but I ...
user avatar
  • 101
1 vote
0 answers
398 views

How does this SpaceX Starlink ground station antenna's gear mechanism move it in both altitude and azimuth?

Ars Technica's Teardown of “Dishy McFlatface,” the SpaceX Starlink user terminal links to the YouTube video Starlink Teardown: DISHY DESTROYED! and a screenshot from there is shown below. There are ...
user avatar
  • 319
1 vote
1 answer
100 views

Why this torque is not considered into the virtual work principle equation?

In the picture above you can see a SCARA robot, with its end effector (the point x,y). The torques c_a and c_b are the ones of the motors in the joints, while f is an external force. My teacher has ...
user avatar
  • 141
1 vote
2 answers
83 views

High pass filter and differential equation relationship

Consider the problem stated as follows: A signal y passes through a high pass filter $\frac{s}{s + ω }$. A high pass filter with cutoff frequency ω isolates the variations of this optimized variable ...
user avatar
  • 33
0 votes
3 answers
463 views

how can I control 2 stepper motors with RS-232?

Hello everyone this is my first post to the forum. I want to control 2 stepper motors using RS-232 as a way of directly communicating with step drivers from my desktop. I am new to communication ...
user avatar
0 votes
1 answer
86 views

PID Control: Is adding a delay before the next loop a good idea?

I am implementing PID control in C++ to make a differential drive robot turn an accurate number of degrees, but I am having many issues. Exiting control loop early due to fast loop runtime If the ...
user avatar
0 votes
0 answers
21 views

3DOF end effector control

I have created a simple serial robot with some servos and CAD. Each joint has 180 degrees of freedom, where they all have 180 degrees of freedom. I haven't specified where the 180 degrees of freedom ...
user avatar
1 vote
2 answers
65 views

Trouble with an actuator on a Robotics SolidWorks design. Any ideas why?

I am in the process of developing a robotics design on SolidWorks. The goal of this design is to tilt a platform using 2 actuators. My design utilizes 2 indirect actuators that are separately powered ...
user avatar
  • 331
1 vote
2 answers
441 views

How is the YAW angle calculated by an IMU sensor?

Say a body rotates by 90 degrees, then the yaw angle will be 90 which can be calculated using the data provided by IMU. Now from that point, the body traverses some distance and is again rotated by 90 ...
user avatar
1 vote
0 answers
47 views

Building a custom indirect actuator, any thoughts?

I’m trying to create a custom indirect actuator, that is controlled by a microcontroller, for a custom robotics project. I have selected motor and gears (according to Fd = W = T2*pi) so that the ...
user avatar
  • 331
3 votes
0 answers
33 views

Problem in the inverse kinematic model of a car like vehicle?

I'm a electrical engineering student and i am building a simulation of a car like vehicle . As I understand it: The input for the forward kinematic model are the control variables and the output is ...
user avatar
  • 65
3 votes
1 answer
57 views

Power a microcontroler with a motorcontroller?

I have a motor controller that operates at 10-50V and draws 5A controlling a 3V motor that draws less than 1A. I had a an idea where I want to try to use a microcontroller to control this set up. The ...
user avatar
  • 331
2 votes
3 answers
83 views

Small scale manufacturing [closed]

Some background: I am working for an ed-tech startup and we are hoping to release our first product soon but have been hitting a lot of hurdles with our current manufacturing strategy. We want to ...
user avatar
0 votes
0 answers
29 views

DC Motor stops working for a couple if time at cold start every time

We have a DC motor that is connected to the track with couplers. Every day at cold start (when it hasn't run for sometime), when we start the motor while moving up (Z-axis) the motor stops (brakes ...
user avatar