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Questions tagged [wheel]

The tag has no usage guidance, but it has a tag wiki.

0
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1answer
26 views

What are the differences between wheel and manipulator joint encoders?

As far as I understand the joint encoders output the angle and the wheel encoders output speed. Is that accurate? In either case, how do the differences affect the kinematic calculations, as in path ...
1
vote
1answer
84 views

4 Wheel Differential Drive Robot with different speeds

Differential drive robot with 4 wheels, If for example the back wheels were using different motors than the front ones ( ie : running at a faster/slower speed ) in general, would that generate more ...
0
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0answers
29 views

how to increase traction for small robotic acrylic wheels?

I am building a small robot weighing 2 pounds for a project. The robot will be working on a variety of surfaces, namely carpet and flat tile floors. I am planning to create 3 inch diameter acrylic ...
0
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2answers
93 views

How to simply connect a plastic wheel to plastic body of a robot?

I have a robot that it's down part is something like this photo: http://www.sanatbazar.com/components/com_jshopping/files/img_products/full_Capture3.JPG . This chassis has 4motors and 4wheels are ...
1
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0answers
31 views

What type of wheel is preferable for a soccerbot?

After a few days,there will held a competition in our varsity.in this competition the task is,my robot will have to play soccer.this is a one to one manual game.I am thinking of building a robot ...
5
votes
2answers
2k views

Wheel Odometry Covariance Matrix for Custom Robot

I have been looking around in the forums, but could not find any answer for how to go about getting the wheel odometry covariance matrix for a custom built planar robot (I found some posts related to ...
5
votes
2answers
238 views

Angular momentum of rimless wheel in Passive Dynamic Walking

In Tad McGeer's work, Passive Dynamic Walking, in 1990, he mentions the rimless wheel model, which is used to approximate the bipedal locomotion. I can't understand why the angular momentum is written ...
1
vote
1answer
496 views

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 ...
5
votes
2answers
1k views

Wheel encoder triggers interrupt too many times

I am building a simple robot with two driving wheel. I want to control the wheel rotation using a wheel encoder like this one. Here is a code I have on Arduino to try to understand the problem I'm ...
0
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2answers
454 views

High-traction thin tires vs Wide moderate-traction tires? [Sumo-bot] [closed]

I am building a sumo-bot and our competitors have thin sticky tires, while we have wider and less sticky tires. The diameter is the same, and the gearbox/motor is the same. Who will win? PS: Sticky ...
4
votes
1answer
3k views

Calculating Required Torque

Say I had an object with 4 motors/wheels attached (in a fairly standard arrangement). I need to calculate the amount of torque required from the motors to be able to move the object of x kilograms ...
7
votes
4answers
867 views

What is the technical name when robot wheels are aligned to perform spot turn?

I have a robotic simulator that enables a 6 wheel rover to perform spot turn. To prepare the rover to spot turn, I have to arrange/align the wheels in such a fashion: ...
3
votes
1answer
933 views

What is the difference between the two different types of Mecanum wheels?

While looking at Mecanum wheels, I noticed that there are two different designs that are popular. One type holds the rollers in between the wheels frame, and the other holds the rollers from the ...
1
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2answers
1k views

Where can I buy heavy-duty Omni Wheels? [closed]

Where can I buy multi-directional omni wheels? I'm specifically looking at something which can support in excess of 100kg/wheel, so around 400kg in total. Also, a possible mission profile would ...
1
vote
0answers
125 views

Securing a disc/wheel to a shaft

I am in a situation where I need to secure a 20" wheel made of 3/4" thick MDF (of my own making) onto a 1-1/4" precision-ground steel shaft, and this joint needs to be strong enough to convey a rather ...
2
votes
1answer
147 views

Forward Kinematics Two fixed standard wheels

What would the equations be for the robot's angular and linear velocity at P and also P2? I think I'm doing it wrong... WL = left wheels angular velocity WR = right wheels angular velocity For P I ...
2
votes
2answers
2k views

Kinematics of a 4 wheeled differential drive robots

I have a 4 wheeled differential drive robot, like the Pioneer 3-AT. There are only two motors, one for left wheels and one for right wheels. I want to send velocity commands to the robot, I'm using ...
2
votes
1answer
234 views

Does a vehicle with defferential gear still move straight?

I am in the concept phase of a driving robot. The two wheels on the front axle will be powered, while the rear will be dragged along. The rear is also responsible for steering but this has noting to ...
6
votes
3answers
1k views

How do I measure the distance that a cord (string) has moved?

For a pet project, I am trying to fly a kite using my computer. I need to measure how far a cord extends from a device. I also need to somehow read out the results on my computer. So I need to ...
6
votes
1answer
152 views

How do I design for a target speed?

I need to make an omni wheeled robot platform (4 wheels), which should go at a minimum speed of 15 cm/s. I have an idea for the design, but since this is my first time doing something like this I ...
0
votes
1answer
95 views

Remote car controlling

Before I start asking you for help let you know that I am newbie in electronic field. All I want to know is the principle of wheel rotation (left-right) from remote car gadget. I am not talking about ...
12
votes
3answers
7k views

Calculating the efficiency of Mecanum wheels

I'm part of a FIRST Robotics team, and we're looking into using Mecanum wheels for our robot. What are the advantages and disadvantages of using Mecanum wheel versus regular ones? From looking ...
10
votes
1answer
313 views

What tyre tread would be best suited to an off road robot expected to deal with frequently muddy conditions?

I'm looking to potentially build an autonomous robot that will frequently venture off road, and remain autonomous for up to 6 hours at a time. I've found limited information however about the best ...