Recent content by Jones1987

Hello, I'm a newly graduated engineer and planning on traveling for 12 months before settling into the real world. I have 12 months to develop my skills in programming languages C++ or C#, I only have basic knowledge of C from playing with PLC software / hardware etc. My question is is...

Hi, I assume this forum is not only for help with engineering problems, but also a community of experienced industrial engineers of all areas. I'm graduating this year, with a mixture of knowledge from mechanical / control engineering, some of this has consisted of PLC and Matlab programming...

Well, I have table data with the torque values at certain RPM. So looking at the table, as the RPM decreases the torque increases which means higher maximum wheel radius. So if I have a speed in RPM, with a torque value. And the max radius at this point is 2m, but at a lower RPM with a higher...

Hi, I have a set of data which indicates the maximum radius of the wheel a vehicle can move before it begins to stall. For example if I have an incline of 10 degree and at 50 RPM / 2Nm my max wheel is 2m. Then I have an incline of 15 degrees and at 30 RPM / 2.5NM my max wheel is 2.5m. Does...

Hi, I'm currently designing a mobile robot which is capable of detecting its surroundings and also any obstacles. I'm currently deciding to use IR to detect the range of objects. However I am using an ultra sound component for a different purpose on the robot, to analyse ground surface. My...

Hi, I'm trying to design a control system for an active steering system. I have the feedback loops setup fine, and the PID controller. I'm not sure how to get my reference model to work, but I'm thinking I might need a feed forward controller, however I can't seem to find any good material...

Ok brilliant. However for some reason, when I calc the ideal wheel size on a flat surface, I end up getting a lower number than what it would be on an incline. But surely on a flat surface you are allowed larger wheels? R = T / (g * m) R = 0.71 / (9.8 * 2) R = 0.036m So I have a feeling I'm...

Hi jack, thanks for the detailed reply. I assume to obtain max wheel size, I just use sum of torque, divided by the force. Which will give me a max radius to use So e.g. m = 2kg T = 0.355 * 2 (2 motors) = 0.71Nm F = (9.8 * 2 * sin(15)) = 5.07N So Rmax = 0.71 / 5.07 Rmax = 0.14m Is this...

Hi, I'm researching into what will be the best size wheels to put onto a motor to allow my robot to climb an incline, and then possibly find out what is the maximum incline it can reach. I'm using this thread as a source for the math...

Hi, It's a lab practice paper I requested, for an upcoming assignment. I just want the effects of the suspension from its ground input. My bad I shouldn't have really called it 'Active Suspension'. I have created and played with this setup in Matlab, but Simulink is a whole different area...

When the motor is producing its top speed, and there is no torque, I cannot picture what this means. I understand that low speeds = high torques, as I can picture an object moving slowly because of its torque. I undersrtand torque as the force that creates rotation, so if a shaft is rotating...

I want to calculate the maximum angle an object can move. So my example is a vehicle using two motors going up an incline. Do I use Torque = r * F * sin(angle) until the torque totals to a constant max torque value but with a speed of 0? I did think maybe I had to change values to equal the...

Hi, I've created the model for an active suspension, however my suspension working space, body accel and tyre load graphs, I'm not sure if they're correct. If anyone could look at the model and tell me if I have gone wrong, I'd be grateful. Thanks. http://cl.ly/251C3e0y3d0Y1z1j0K1W...

Not sure if this is too late but I'll drop off some input, as I'm being taught this currently :D The Automotive industry is trying to break through with mechatronic systems. Things such as your ABS and cruise control work on these systems. So I guess the future would be ideas like steer by...

So I am using software called Caedium... It allows me to test airfoils... however they need to be in a .brep format. I can use the example file they use, however I'm having a hard time working out how to use new .brep files I've converted I can use a .pts but this seems a ridiculous way of...