Questions tagged [design]
Mechanical, electronic or programmatic design of a robot.
147
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What is the corrispettive motion convention for robotic systems with X,Y,Z axis? [closed]
We built several systems coupling multiple linear micrometric stages. I can't find a standard defining the axis convention of these kinds of systems, it there are any.
Regarding the system on the ...
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Block algebra and normal algebra inconsistent
I've been playing around with some block maths, mostly trying to remember how it actually works, and I've come to a simple example that should be reduced, however when doing the normal maths, compared ...
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1
answer
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Artificial Intelligence and Open source pipeline for automated design, simulation and analysis of robotics systems
I have heard about open source 3D printed robotics projects (https://www.poppy-project.org/en/ is somehow obsolete example). My question is - are there open source holistic/integrated frameworks of ...
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1
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Design a robot that can apply hot glue to paper
I need to automate a process that involves applying hot glue to paper. I own a standard handheld hot glue gun, like this one:
Sticks of room-temperature glue are fed in the right side. Pulling the ...
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1
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How should I create a Pangolin (Armadillo) structure?
I am new to this forum. I want to create a mechanical structure as depicted in the image A pangolin bag. And further wouls like to automate the closing and opening of the bag. But I am facing issues ...
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1
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How can I attach an arm to a double-flat drive stepper motor?
This is my first robotics experience, outside of one class 10 years ago. I've been Googling this question for about an hour but I can't find an answer!
I'm using a ROHS Step Motor 28BYJ-48 (with an ...
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1
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Why can't motors be as elegant as human muscles? Why do we have to use electromagnetism to create movement?
Pretty much as the title says. Why isn't it possible to build motors as microscopically and simply as they're built in humans? Why can't we recreate electronic nerves and muscles?
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If you can create pure yaw motion with a quadcoptor then why won't this work with a tricoptor?
An answer to the question Why are quadcopters more common in robotics than other configurations? said:
You need 4 degrees of freedom to control yaw, pitch, roll and thrust.
Four props is therefore ...
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Robotic Arm Senior Capstone. Electronics/Controls/Sensors Questions
I am a mechanical engineering student currently working on my senior capstone. My team of all MechEs has to build a robotic "arm" where the arm is really just a link/bar of aluminum. The thing we ...
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Challenges involved in designing an Industrial Robotic Arm [closed]
I was wondering if any robotics engineers around would kindly, provide suggestions on the following:
I was recently hired by a company that wants to implement a robotic solution in manufacturing ...
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Ontology/marketplace of robotics components and integration environment (BPEL or CAD for robotics)?
It should be possible to take the formal description of robotics components (in form of ontology, formal API descriptions or other kind of formal specification of the capabilities and requirements of ...
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router tilting mechanism
I am trying to design a very rigid tilting mechanism for my router. For this purpose I had a look at table saws, which seem to be supported by 2 mechanisms, one in front, one at the back, called "...
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how do i select light-weight 6dof robot?
I plan to do some scientific research, after modeling and path planning for the robot, The algorithm outputs the Joint control torque(or Joint variable), and then i want to input this result to the ...
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How to decide about the length of a robotic arm, the base of it and the torque?
I am designing a remote controlled robot which will have a base with three wheels, two of them will be simple wheels at the back of the base and the third will be a ball wheel at the front. It will ...
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What are human-friendly terms for mobile-robot orientation and relative direction of non-robot objects?
Within robotics programming, orientation is primarily given in terms of x, y, & z coordinates, from some central location. However x, y, z coordinates aren't convenient for rapid human ...
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Permanent Magnet DC Motor Calcuations
I have to determine speed and torque suitable for my combat robot.
I've done some calculations and I need to know whether they're right or not (because they don't seem to be right).
Suppose I have ...
CommunityBot
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Wheels vs Continuous Tracks (Tank Treads)
I'm building a small robot using some cheap Vex Robotics tank treads. However, my choice of picking tank treads is almost purely based on the fact that they seem like more fun than wheels. I don't ...
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What type of mechanism is this?
Held and rotated by the knurled ends, one in each hand, the silver spokes rise and fall in order for the assembly to rotate. What is it, some companies' salesmen show tool? Found in an old building, ...
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Can a state matrix have a row of zeros?
While formulating a state matrix of a system, say a system of a typical cruise controller,
\begin{equation}
\begin{bmatrix}
\dot{v}
\end{bmatrix} = \begin{bmatrix} -\frac{b}{m} \end{bmatrix} \begin{...
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How is a shear pad of remote compliance device formed?
I am researching on mechanical design of remote compliance devices (RCC)†. In the RCC, manufactured by ATI, they use shear pads for lateral compliance. They mention that shear pads are ...
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Difference between form closure and force closure
What exactly is the difference between both the above terms? From some of the papers I realize that force closure depends on the frictional forces. Is it correct?
Suppose I to grasp a cylindrical ...
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is designing a pcb with multiple controllers a good schematic design?
I am trying to design a bot, it has to measure the temp I am using an 8051 so the adc is taking up a lot of i/o pins so I am thinking of switching it out with a thermostat or put another controller ...
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Line follower robot with 2 or 4 motors?
I am developing a line follower robot and I am not sure about how many motors should I use: two or four. I'm thinking of using four, but I do not know if it's worth it (it will let the car be heavier, ...
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Is it better to use software or hardware for object sorting?
For a sorting machine where the objects to be sorted have various sizes, color, shapes, and patterns, is it more optimal (in terms of minimal time of the overall process and maximal precision and ...
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Is this large bipedal robot real or realizable?
I saw this link today. This robot seems real, but redditors on a reddit thread argued that it might be CGI. It doesn't seem unfeasible to make such as robot IMO. There isn't anything out of the norm ...
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Comparison of Balance Bot design
I'm planning to build a Balance Bot and I would like to know which design should I go with. There's a vertical design such as the ArduRoller and on the other hand, there's the typical stacked type of ...
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Design in the robotics world [closed]
Apologies if this isn't really the right place to be asking, but I was wondering whether third party design firms are ever contracted to design industrial and or consumer robots?
If not is it ...
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How to get manufactured part from CAD file?
I am working through the book Learning Robotics using Python, which is for Python programmers who want to learn some robotics. Chapter 2 shows you how to use LibreCAD to design the plates and poles ...
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Type of servo and torque calculation required for a 2axis robot arm
I am trying to build a 2-axis robot arm with pan and tilt mechanism. The gripper/holder will hold an object weighing 300 grams. The total weight of the arm including the motors will be around 2 kg. I ...
CommunityBot
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Choosing the right Mecanum wheel
I am part of my college robotics team which is preparing for Robocon 2017.
We have used Mecanum wheels in last Robocon competition, but we have faced huge slip and vibration. I have looked for all ...
CommunityBot
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MEMS accelerometer calibration
I am trying to calibrate a MEMS accelerometer. I was able to calibrate it for the current axis which is parallel to gravity and shows correctly, 1g. But the other two axes which should be 0.00g are ...
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Considerations to design actuators, and loop feedback systems, for a robotic arm [closed]
Let's say I have an industrial sized 6DOF robotic arm. I want to control each one of the six joints despite the non-linearity produced by the chain structure, the gravity and the weight of the loads ...
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Automatic sliding window shutter
I want to build an automatic sliding window shutter and need help
with part selection and dimensioning.
Some assumptions:
window width 1.4 m
sliding shutter weight 25 kg
max speed 0.07 m/s
max ...
CommunityBot
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Atlas Robot Reference
Boston Dynamics keeps making great robots, however, I dont see any papers that they publish. Although now I can find papers on people using the ATLAS robot, I can not find an original paper detailing ...
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3 way check valve
I am working on a micro dispensing system, using syringe pump. The design involves a syringe on top to be moved by stepper motor. There would be one liquid reservoir form which the syringe would pull ...
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1
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Sphero's logic, how does it work
I'm willing to make my first robot, and I'd like to make one similar to the Sphero.
I know I have to add 2 motors in it, and make it work as a hamster ball, but I don't understand how I can make it ...
CommunityBot
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3
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Dynamic simulation of compliant elements in quadruped robot
I have a preliminary design for a legged robot that uses compliant elements in the legs and in parallel with the motors for energy recovery during impact as well as a pair of flywheels on the front ...
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Robotic part to dispense candy
I'm a complete newbie trying to build a simple robot that dispenses candy (M&M, skittles, etc). However, since I'm not familiar with the field, I'm having a hard time googling because I don't ...
CommunityBot
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Is Venetian mirror possible in Autodesk Inventor? [closed]
I see there are things like glass and mirror in Autodesk Inventor Professional 2016 but is there a possibility to have Venetian mirror? So that from one side it would look like a mirror and from the ...
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Recommendation for 3D mechanism modeling and simulation software
I'm working on a robotic hand and I would like to simulate different joints and tendon insertion points before starting to actually build it.
I've been googling and found things like Solidworks and ...
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1
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What is torque bandwidth in actuated joints and how does it affect the control systems?
The rest of my student team and I are in the process of redesigning an exoskeleton and building it based on an existing one. From the papers that we have been reading there are some references to low, ...
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MCU architecture design
Are there any standards regarding single vs multiple MCU in a robotic system? More specifically, if a single MCU can handle all of the sensor data and actuator controls, is it better to use a single ...
CommunityBot
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Building Robotic arm joint
I am very new to robotic design and I need to determine what parts I will need to assemble an arm joint. The joint will contain one timing belt pulley which a remote motor will be turning, a forearm ...
CommunityBot
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How can I control fast real time sensor (250Hz) with slow system display(60Hz)
We do some experiments of real time representation of sensor position on TV. In this experiments, we used sensors for collect real time position in 3D at 250Hz and TV for Display the sensor position ...
CommunityBot
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What factors should i consider when selecting a motor for a free wheeled cart-pole balancing robot?
I'm developing a small scale cart-pole balancing robot consisting of two wheels driven by a single motor at the base (essentially like a unicycle, but with two wheels to constrain balance to a one ...
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Air hockey with a robot as an opponent
I'm not sure if this is the right place to post this but here goes.
So, as the title states, I'm planning on building a desk that doubles as an air hockey table which has a robot on the other side.
...
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How to make door opening to the top
I need to make this construction (door is closed by default, door is opened to the top). This is the scheme:
Red rectangle on the picture is the aperture, blue rectangle is the door (weight is about ...
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How do I dispense a greasy fluid?
I'm a agricultural engineering student and complete newbie trying to build a simple mechanism attached to a drone that dispenses a grease-type fluid. However, since I'm not familiar with the field, I'...
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Lifting Robot To Lift Small Crates [closed]
I am trying to design a robot to lift tote-crates and transport them around in a localized area. I want to be able to carry 3 tote-creates at a time. This robot needs to be able to pickup the creates....
Ben♦
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Inverting a transform (Reading J Craig's book on Robotics)
From Introduction to Robotics by J.J. Craig, chapter 2, Page no. 36:
Could anyone explain how that equation was derived/formed? I am stuck on this page due to failing to understand where the equation ...
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