Nathan DeParis
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  • Methuen, MA
  • United States
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Nathan DeParis's Discussions

Actuators in Control Theory

Started this discussion. Last reply by Jay D on Wednesday. 12 Replies

For Engineers, What would the difference in actuation be between a home heater and the pupil of the eye. I have the actuators for this as the heater coil and the iris muscles, but what is the…Continue

U.S History and Culture

Started this discussion. Last reply by Nathan DeParis Jan 9. 8 Replies

Gentlemen, A friend of mine is coming to the U.S from Singapore and is trying to find info on the History and Culture of the Country. What are some websites that do this well. She is moving to New…Continue

Mind over Matter...I guess.

Started this discussion. Last reply by Nick H Dec 12, 2014. 14 Replies

Hi Everyone, So recently I have been having a lot of trouble in class. Well it is finals time and the thing is that something is going on that I have not felt in the past three years, more so than at…Continue

Referal Skills

Started this discussion. Last reply by Nathan DeParis Nov 2, 2014. 15 Replies

Hi everyone, What are some of the ways to go about referring someone to a particular department at school, but not have it seem like you don't want to hear what they have to say? Some of the things…Continue

 

Nathan DeParis's Page

Latest Activity

Nathan DeParis replied to Native Son's discussion The Archbishop of San Francisco Strikes Again! in the group Catholic Men
"I have heard from Catholic radio certain parishes are trying not so much to bar females from being altar serves as I do think this is really healthy because of vocation for sisterhood. But also to increase the amount of boys as altar serves which as…"
Thursday
Jay D replied to Nathan DeParis's discussion Actuators in Control Theory
"No i wouldnt say that the heater is binary. There are many states between on and off. And it is bidirectional. Depends on the heater though... With the iris i dont see that much of a difference. If i had to point at a difference i would say that the…"
Wednesday
Nathan DeParis replied to Nathan DeParis's discussion Actuators in Control Theory
"In my professors email he said to focus on the actuators  In His words, "Both systems (home heating and eye) are examples of closed-loop feedback systems.  Sensors within the eye detect light intensity and too much or too little…"
Wednesday
Nathan DeParis replied to Nathan DeParis's discussion Actuators in Control Theory
"So would say that in reading the italicized question, that the heater is a binary out put like it is either on or off, and the iris is a more continuous actuator?"
Wednesday
Jay D replied to Nathan DeParis's discussion Actuators in Control Theory
"Going with Kit here. The Heater gets constant feedback and regulates the temperature steady. If the temperature to low it the heat goes up, if the temperature is to high the heat goes down. As for the eye... dont know how eyes work but basically i…"
Wednesday
Nathan DeParis replied to Nathan DeParis's discussion Actuators in Control Theory
"Well it is problem 3 and it says  the two feedback systems explored (home heating system ,,and eye) have very different control algorithms, recall that the controller is the element in a feedback system that examines the error signal and…"
Wednesday
Kit the Odd replied to Nathan DeParis's discussion Actuators in Control Theory
"So the two actuators are the heating element and the iris muscle.  One is thermal, but does not change shape, the other makes shape/size changes.    What is the full question or problem statement?"
Wednesday
Rusty Rogers replied to Nathan DeParis's discussion Actuators in Control Theory
"The iris is merely a muscle, which does nothing but controls the size of the hole through which light enters (pupil). The retina is just a surface on which the view lands, but the retina has all the receptors."
Wednesday
Nathan DeParis replied to Nathan DeParis's discussion Actuators in Control Theory
"this is what my professor said in a email i recently sent "Both systems (home heating and eye) are examples of closed-loop feedback systems.  Sensors within the eye detect light intensity and too much or too little results in…"
Wednesday
Jay D replied to Nathan DeParis's discussion Actuators in Control Theory
"The other way around. The iris ( i dont know biology that well) gives feedback from the retina (sensor) so it can not be a open loop. If the heater is controlled manual its a open loop. If there is a heat sensor giving feedback its a closed…"
Wednesday
Kit the Odd replied to Nathan DeParis's discussion Actuators in Control Theory
"The basic difference between open loop and closed loop is feedback. And sometimes that means deciding what is part of the system. For example: A heater may have a built in thermostat that measures the air temperature and turns the heating element…"
Wednesday
Nathan DeParis replied to Nathan DeParis's discussion Actuators in Control Theory
"So if I was asked to describe the difference in actuation that separates these two types of controllers I can say that the difference is that the pupil is an open loop and does not require feedback and that the heater is a closed loop and does…"
Wednesday
Jay D replied to Nathan DeParis's discussion Actuators in Control Theory
"A heater can be both open open or closed loop. Depening whether it is regulated manually or by temperature. But assuming your example i think you are talking about a manual heater so a open loop. The eye i would classify as closed loop. So that…"
Wednesday
Nathan DeParis posted a discussion

Actuators in Control Theory

For Engineers, What would the difference in actuation be between a home heater and the pupil of the eye. I have the actuators for this as the heater coil and the iris muscles, but what is the difference in actuation that separates the two types of controllers for each system, does it have to do with open loop and closed loop. Thanks,See More
Wednesday
Native Son replied to Nathan DeParis's discussion Going For It in the group Catholic Men
"Regular Joe has some very good points. To recap: You have exactly the same relationship with her as you do with AoM "Friends" you've never met in person. How far away does she live from Boston?  If she's out of state or even…"
Jan 18
Regular Joe replied to Nathan DeParis's discussion Going For It in the group Catholic Men
""We have only known each other for a little over a month. " By "known each other" do you mean that you've been chatting on the internet for a month?  "She won't be able to come here ( Boston) until…"
Jan 15

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At 4:12pm on January 25, 2013, Herb Munson said…

Hey there Nathan, just wanted to say welcome to The Great Debate!

 
 
 

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