Questions tagged [actuator]

A motor, not necessarily electric, which converts energy into some kind of motion.

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What is the typical intro example for control systems for a spherical joint?

I have been studying Acrobot and Cart-Pole. Both of these systems I can both work out the equations of motion and linear manipulator equations for how to maintain the poles vertically. The problem ...
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1k views

What servos are suitable for a robot like Boston Dynamics’ Atlas?

I have seen Boston Dynamics’ robot Atlas do some pretty impressive things, like a backflip, which must put quite large torques on the servomotors. What servos are there that can generate torques like ...
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30 views

Output power of an actuator - General definition

I'm looking for a general definition of the output power of an actuator. Can you suggest me any book or paper or education website where I can find it please? Thank you in advance. EDIT I read the ...
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131 views

Calculate the inertia matrix of complex robotic mechanism

Motor, irregular rigid body of Different materials Forming a single robotic. For example, Industrial robot, every geometric shape of the link is very complex. But we can find inertia matrix form CAD ...
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1answer
56 views

State of the art trajectory for fine precision robots

Which kind of trajectory would one use for a fine precision robot? I know trapezoidal and cubic trajectories, but errors get very high when stopping at every configuration and when speeding up to ...
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161 views

Control method of large linear actuator [closed]

I have a Large linear actuator from Hiwin, the serial number is LAS3-1-1-500-24GE. the data sheet for the LAS3 can be seen on page 18 of the following link: http://www.hiwin.com/pdf/linear_actuators....
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106 views

Are scissors what I want for moving straight up and out?

I'm a programmer. I had a tiny amount of experience building robots in college a few years ago, but haven't done anything since. I'd like to build a robot that can move around my house, pick items up ...
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1answer
74 views

How to get started on making a dispenser for Indian spices?

I want to make a dispenser system for Indian spices. Dispense in multiple of teaspoons (5 ml) Handle powdered spices and small seeds like mustard/cumin I ordered a spice carousel from amazon and ...
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1answer
31 views

Design a robot that can apply hot glue to paper

I need to automate a process that involves applying hot glue to paper. I own a standard handheld hot glue gun, like this one: Sticks of room-temperature glue are fed in the right side. Pulling the ...
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44 views

What do the model numbers in Harmonic Drive gear drives represent?

According to one of their brochures, Harmonic Drive numbers their models with numbers like 8, 11, 14, 17, etc. I noticed that Chinese suppliers like Laifaul have a similar numbering scheme, though it ...
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357 views

Potentiometer as pressure sensor in linear actuator?

I'm trying to use a linear actuator (sample electric cylinder) for a soil penetration device. Originally, I thought of using a pressure sensor to know when/if I hit a rock. However, I am not seeing ...
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41 views

Electronic Spring Vibrating Spheres

For a science project, I'm looking for a way to actuate a spring, connecting two ~ 1 cm Styrofoam spheres to each other, at frequencies around 1-60 Hz. In other words, I want to be able vibrate 2 ...
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346 views

motor to turn a screw to move a lever [closed]

Where I can buy an actuator that consists of a motor that turns a screw that moves a rod?
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100 views

Converting a differential equation into its Laplace transform

Given the differential equation of a current controlled electric actuator, how would I convert the differential equation into its Laplace transform? $$ J \frac{d^2 \phi(t)}{dt^2} + D \frac{d \phi(t)}{...
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What type of actuator should I use? [closed]

I need to find out if There is a way to get at least 60 Hz of linear Motion with at least 5 mm of stroke that I intend to make linear persistence of vision device(not rotating one)It must be small and ...
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1answer
127 views

Considerations to design actuators, and loop feedback systems, for a robotic arm [closed]

Let's say I have an industrial sized 6DOF robotic arm. I want to control each one of the six joints despite the non-linearity produced by the chain structure, the gravity and the weight of the loads ...
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542 views

differences between SCARA arm design

I am currently interested in SCARA arm designs and I have few, beginner questions for which I didn't find answers yet. 1/ While comparing professional arms (made by epson, staubli...) I noticed that ...
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564 views

Electric piston (longitudinal electric motor)?

Are there electric motors, which apply force not in rotational motion, but in longitudinal motion? They should have electromagnetic design and no gears and worms. Such motors would be great for ...
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1answer
878 views

Arduino with two Linear Actuators, two ACS714 Current Sensors, and an L298N Motor Driver setup

I am using the L298N motor driver to drive two HAD1 linear actuators (12V each and a no-load drive current of ~950mA each) Linear Actuator: http://www.alibaba.com/showroom/mini-linear-actuator-had1....
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1answer
384 views

Where to go to purchase parts for XY Plotter [closed]

I am trying to build a 2ft square an XY Plotter. I have seen three designs so far: 1)Rack and Pinion 2)Threaded Screw 3) belt-driven. all these use a stepper motor to drive the system. Each one has ...
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Simple plastic welding machine

I'm doing a little hobby project where I want to weld two thin plastic sheets together, using two heated plates with a specific pattern. I was doing this manually but felt that the result was ...
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48 views

Need help regarding electromagnetic suspension implementation

I an trying to implement an electromagnetic suspension system on model/small scale (like the bose suspension system in this video: https://youtu.be/3KPYIaks1UY). Upon doing some research on this topic,...
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700 views

Which motors are used in boston spot robot

I want to know which motors or smart servos are used in boston dynamics spot robot. Where can i read its spicification and is it possible to buy the motor?
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Plug & play motors, actuators and drivers system

I was wondering if anyone knew of any easy-to-use plug and play systems, that allow you to build and programme a number of actuators and motors quickly and easily? I'm thinking something like Lego ...

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