Thank you, I substituted the values there and got the output. But when i do it manually applying in above equations the values getting negatived. This is causing because Sin(30) = -0.98803, so should i substitute the theta value as it is or i need to manipulate it.
@Kishorekumar Not sure what may be the issue. Take a look at the tutorial for the equations, then go to the Tool page and view source. The equations and calculations done are a ways down the page and presented as clearly as possible. You should be able to use this to compare.
Thank you for your direction, I studied the source and came know that the degrees must be converted into radians before substituting.
hi coleman benson .i don’t understand direction f . when the wheell uphill so direction of f reverse a( reverse direction move).you give me basic ,book and research about the equations .thank so much
@chuot_b2 Unfortunately we do not carry such a book, but you should be able to find the core concepts in a college or university level physics textbook (try your local library).
why the friction (f) contrary to acceleration ?
@yaniv If friction acted in the opposite direction, there would not be any forces which push the wheel up the incline.
Thanks for the tutorial!
I have a doubt.
I guess by the second equation M*a = f -Mgsin() , acceleration ‘a’ depends only on value of ‘f’ (frictional force) and angle of inclination. So how does using a high torque motor increase acceleration ?
@Deevan You can see how torque affects the acceleration by rearranging this equation to solve for ‘a’: https://www.robotshop.com/blog/en/files/teff.jpg
Greetings. Could you please tell me:
- The units used for a, R and M;
- An online resource to study this?
Many Thanks
Hello! Just another thing: what are you using for Theta, in sin(T)? Degrees or radians? Since we are talking about about ‘w’ in rad/sec I assume radians, but… Thank you
@Jorge Dias The units for R (radius) are whatever units you want to use (mm, cm, m, inches, feet are most common). We are not aware of any books or material which covers this.
May I ask, is the total mass of each motor is included in the Input Total Mass?
do these calculations also apply for a motor that drives tank treads?
is a motor of 2kW 450 Nm practical?
@Srikanth katrisal To a certain extent the calculations are similar, but without actually going through these differences ourselves, we cannot point out what modifications need to be made. A 2kW motor is quite large, so if you are considering something in that range, we strongly encourage you to work out the physics involved in a tank of that size.
@Coleman Benson, yeah it is a pretty big vehicle in considering. It’s actually an all terrain wheelchair kind of thing. With that in mind, it’s that big a motor necessary?
@Srikanth Katrisal Not sure exactly, but start with getting a feel of the rating for the power for existing wheelchair motors (intended for only moderate inclines), and then multiply that to get an idea of what you need (for more extreme terrain). There is a tracked wheelchair you can purchase (search online), and you might find the manufacturer lists the motor specs.
Good day
Can you please guide me through on how to size a motor to autonomously steer a quad bike (ATV), with the consideration of steering at stationary position where friction is maximum/high