JSycamore
  • Member for 6 years, 9 months
  • Last seen more than 2 years ago
Building a stationary robot. ROS the right tool for me?
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If all you want from ROS is the publish/subscribe architecture, then I would caution that using ROS probably has non-negligible overhead, especially if you are unfamiliar with it. In particular, the ...

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Accessibility distribution of three vector fields
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Chow's Theorem states that: The driftless system $$\dot q=g_1(q)u_1+...+g_m(q)u_m$$ is locally controllable at $q_0\in\mathbb{R}^n$ if $\text{rank}\bar\Delta(q_0)=n.$ Here, $\bar\Delta$ is the ...

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Are there any others alternatives for PID controllers for line following robots?
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Because you don't have any specific robot in mind, let's assume that you have a two-wheeled differential drive robot (TWDDR). TWDDRs can be modeled with unicycle dynamics of the following form: $$\dot{...

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The 3 key components of a robot are controller, servo, and reducer. Can someone give us an "official" explanation of what they do respectively?
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Your question is premised on a misunderstanding of what a robot is composed of, but you are close. A robot is an agent that is capable of sensing, thinking, and acting. The sense-think-act (or sense-...

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"Smooth" inverse kinematics model for 2-wheeled differential drive robot
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If I understand correctly, you would like to understand how control a two-wheeled differential drive robot so that you can achieve smooth/elegant driving while arriving at a desired final orientation--...

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What is a suitable model for two-wheeled robots?
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The answer to this is simple, but the other answers obfuscate the dynamics. Differential drive robots can be modeled with unicycle dynamics of the form: $$\left[\begin{matrix}\dot{x}\\ \dot{y} \\ \...

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Ultrasonic Sensor through a column
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Is the sensor expected to have error of this order? In brief, yes. All sensors will have some degree of noise, which is characterized by the manufacturer. To avoid this, you can use a different ...

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Measuring vehicle's forward and lateral acceleration using a smartphone
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There are many things to consider. Assuming that you are developing an app to accomplish this, you should invest some time in filtering. Depending on the vehicle and the phone's position in the ...

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Estimating the displacement of a drone in three dimensions
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By assuming that the drone is 2D as you have done, you are fixing the vertical axis (e.g. height from the ground). For a real drone operating in 3D, there are six degrees of freedom corresponding to ...

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Covering Up Ultrasonic Sensor
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You should consider building a measurement model for your sensor--this will enable you to use your measurements in an effective probabilistic manner. The problem is that beam sensors are noisy, ...

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