Questions tagged [actuator]

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91 views

How to solve this linear motion problem?

Context: I have a lead screw rod, nut and a pulley aligned vertically. The nut is attached on top of the pulley so their respective bores are aligned and the rod is arranged so that it is threaded ...
3
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0answers
91 views

Shape memory alloy fibers with low Young's Modulus?

I am wondering if there exist any species of shape memory alloy fibers with low Young's Modulus at room temperature, for an application I'm working on. So far I've played with Flexinol, but it is a ...
2
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0answers
35 views

Can a cellulose sponge be used as an actuator to shut off flow of water temporarily?

In non-recirculating hydroponic systems, we want to fill containers with nutrient rich water let's say up to an inch, let the plants take up the water , give the plants some air time for a few hours, ...
1
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0answers
43 views

Building a custom indirect actuator, any thoughts?

I’m trying to create a custom indirect actuator, that is controlled by a microcontroller, for a custom robotics project. I have selected motor and gears (according to Fd = W = T2*pi) so that the ...
1
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0answers
17 views

Clutch for high-speed operation (>40 000 rpm)

I'm currently working on a setup where at some operations my motor has to drive a shaft up to the motor's maximum operating speed (12,000rpm) and a torque of ~0.14Nm but at other conditions this shaft ...
1
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0answers
40 views

Deciding between Electric or Hydraulic Actuators for a Dynamic Load of around 4 kN to 6 kN

This is a project regarding linear actuators for a 4 Wheeled Robot, with spider like hinged legs. The first question on my mind was to figure out is if a hydraulic system has any weight to Force(...
1
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0answers
33 views

Solenoid stroke limits

Im new to rotary solenoids and I had like to understand the definition of stroke. For example, some rotary solenoid has in its technical information a parameter called stroke options and it says 25-...
1
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0answers
43 views

Linear actuator calculations

I'm building a motorized standing desk and am looking into what to use for the linear actuators. I'm targeting a stroke of 450mm and a lifting force of 100kg. I found some Linear Actuator on ebay that ...
1
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0answers
25 views

Searching for a High Speed Actuator for a simulator

I am currently planing to build a consrtuction for a simulator. My simulator seat should be able to fall like 30cm and afterwards move to the starting position . The falling should be as natural as ...
1
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1answer
82 views

Solar panel actuator control

I'm looking to design a system that can control a solar panel through an electrical actuator for a range of motion of -45 to +45 degrees for maximum solar exposure. The panel will be mounted on a 10 ...
0
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0answers
63 views

Need advice on how to detect an object in the way of a closing door

I have a system design with a 149oz-in stepper motor for opening/closing a drawer style door. My cross sectional dimensions of the door opening are 20" width by 15" height. The motor ...
0
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0answers
81 views

Energy Wasted in Electromagnetic Motor Actuator Vs Human Muscle Actuation

I would like to know if the energy utilized by a robotic arm is greater compared to the energy utilized by human arm. Robotic arm is essentially servo motors that use electromagnetic field to create ...
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0answers
13 views

Why does my piezoelectric actuator stick at low temperatures?

I use a piezoelectric actuator on an experimental set up. At low temperatures (Lower than 0 Celsius), the piezo will freeze. Meaning, it will actuate about half way, and then stop moving. Other than ...
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0answers
79 views

What is the correct mathematical approach to this linkage problem?

I have a linear actuator with 52 millimeters of travel. I have a set of linkages with specific dimensions as shown in the images below, to which this actuator will be attached. The REF dimension is ...
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0answers
45 views

What type of acturator with motor to choice for measurement with step = 0,25 μm?

I need to select some linear acturator or build it. I see it as: On green platform there is pink device. This device must be measured. For this purpose we need to choose linear acturator with ...