Questions tagged [brushless-motor]

Brushless motor is kind of DC motor. It is also called BLDC Motors (Brush-Less Direct Current Motors).

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Gimbal motor shaft

Does anyone know if a shaft can be pressed into a gimbal motor like this? Is the centre metal ring just the inner race of a ball bearing? The ring looks thicker on one side but thinner on another ...
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59 views

4 wheeled differential wheeled (skid-steer) robot steering problem

My question is about a square shaped differential wheeled robot, I built, that has a hub-motor (BLDC motor) attached to each corner, i.e., the wheels on the same side, either left or right, have the ...
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108 views

State Space Model of Brushless DC

I am working on a project in which I want to use State Feedback Control to position control a BLDC motor in combination with a motor controller. I want to do this since translating time domain ...
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195 views

How does one setup an ESC to drive a wheel-hub motor?

I have 2x 350W wheel-hub motors taken from a self-balancing scooter, or hoverboard. My intention is to use the two of them to drive a homemade R2-D2. However, some difficulties have been encountered ...
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121 views

Which brushless dc and propeller to choose?

I have a small bot(around 4-5kg with wheels) which is to be pushed without contact by another bot. I plan to do this using a bru and a propeller. I am having problems selecting the right combination. ...
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243 views

Is motor current proportional to thrust?

So I was making sure my circuit for an airboat I was working on was safe. And checking a motor, it has 35 amps max current running 11.1v at 1000. (However my ESC has a 30 current, 40 burst amps). ...
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146 views

How does the “rated torque” for a gear relate to the maximum torque?

I have just sized the DC motors I want to use (corresponding to my robot and its intended applications - my figures include a 50% uncertainty factor to account for friction in reducers and other ...
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90 views

Power Model for humanoids

I am in the process of creating a Power Prediction Model for the Hubo Robot. The Robot has 38 Degrees of Freedom and has a computer some sensors and motor boards. The motors are powered through Motor ...
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851 views

Making a brushless servo using Hall sensors

I'd like to assemble a prototype of brushless servo system using a RC brushless motor (heavily geared down), a sensored Electronic Speed Controller for RC motors, and a microcontroller to do the PID ...
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43 views

Finding viscous damping coefficient and Static friction constant of BLDC motor

I have a BLDC motor and I know its Torque-Speed curve along with torque constant $K_t$, motor winding resistance $R$, and back emf constant $K_e$. I would like to determine its viscous damping ...
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32 views

BLDC Motor Position Control

My question has two parts on the same topic. 1) With BLDC motor control, not focused on position control, it seems like commercial controllers are split on control methodologies. The first group ...
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4answers
549 views

Automatic forward and reverse Brushless Motor

The video Here shows a motor using rotational motion to move a load forward and then reverse back, without manually switching it to reverse. How can I program my brushless motor to operate like the ...
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31 views

What control circuit element will control an ESC while doing bench testing?

While doing bench testing of motor and prop combinations what simple device would I use in the circuit to properly control the ESC for the full range of power from 0% to 100% ? I have seen a few ...
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31 views

Quadcopter motors not spinning

I made a quadcopter with an Arduino and all connections are fine. When I arm it, the motors spin without props but when I connect the props and arm it, the motors spin for a second and stop. Can ...