# Tag Info

• 136

### What is difference between RoboEarth and KnowRob?

RoboEarth was the name of a European project. Knowrob is software that was developed, in part, by the RoboEarth project.
• 4,235

### Why Does an Exponential Make ANYTHING a Probability Distribution

To complement what Octopuscabbage correctly reported, there exists a strong theoretical foundation for using normal probability distributions in many different contexts, which builds on the Central ...
• 3,575
1 vote
Accepted

### Going from Spline to Differential Drive Command

If you have the path you want the robot to stay on, it sounds like you need Pure Pursuit. In this simple algorithm, you steer the robot to some look-ahead point on the path. The gist of it is ...
• 5,215
1 vote
Accepted

### How is this torque value arrived?

I haven't seen the degree symbol $^{\circ}$ to denote a percentage, but both percentages on your drawing result in the same torque: 54.7, not 57. (10.12/0.185) $\approx$ (34.12/0.6238) $\approx$ 54.7. ...
• 14.7k
1 vote

### Articulated configuration

Seems that the book has an error. You are right, they should correct that. In the drawing it can be seen that those two z-axis are indeed parallel. I recommend that you considered them parallel and ...
• 477
1 vote

### Is Fuzzy logic applicable for robotics research

I have not seen any industry-grade application of fuzzy logic in space, flight, automotive control systems. Fuzzy logic came during mid-60s and it gradually faded away due to several reasons: It did ...
• 357
1 vote

### Why ODE for optimal control theory?

Appending to @WalterJ's answer. Linear and nonlinear systems which form the basis for subjects like optimal control theory have rigorous math fundamentals which allow you to analyze ODEs without ...
1 vote
Accepted

### Why ODE for optimal control theory?

The reason why ODE's are used is simply: physics. It would be great if any system could be modelled by a simple linear function like $x(t)=at$, but nature is not so simple, or linear. Even when you ...
• 156
1 vote

### Strange phase case in Bode diagram of a transfer function

It's just a phase unwrapping case in MATLAB. Anyway when real parts of complex poles/zeros are null, phase jump could be +180 or -180, it's uknown therefore both diagrams are correct
1 vote

### How many stages necessary to stabilize position while controlling torque?

If you are trying to implement torque control, you only need a control loop around torque. The challenge isn't in trying to integrate the torque (or acceleration) controller, and passing it to a ...
• 4,326
1 vote

### How many stages necessary to stabilize position while controlling torque?

I would say the transferfunction becomes $\frac{1}{s^2}$ iff you assume you have a perfect drive without any dynamics. Since this system is unstable you have to be careful choosing your controllers. ...
• 189
1 vote

### Papers on Algorithms in Robotics

You might like the algorithms run on PR-2 robot. Two papers I can think of are "A single planner for a composite task of approaching, opening and navigating through non-spring and spring-loaded doors" ...
• 11
1 vote

### Which math course will be most beneficial?

I went through the Virginia Community College System (VCCS) (not saying which one specifically for myself). In Virginia, if you graduate with >= 3.0 GPA from a Virginia Community College, you are ...
• 14.7k
1 vote

### Perfect implementation of Asimov's 3 Laws

I disagree that implementing law 1 automatically implements the other 2. Law 1 only states that a robot may not injure a human. Nothing in that law implies that the robot must obey people or protect ...
• 5,215
1 vote

### Shortest path using wave planner?

According to this website http://www.cs.tufts.edu/comp/150IR/labs/wavefront.html It shows a method of converting the zero to number and calculating the fastest distance.I am assuming you mean ...

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