Recent content by knight92

Thank you for the replies. The pipe is connected to another restriction at the end and I do know the restriction size but I do not know what the pressure or flow rate is at the end of the pipe. The purpose is to create a mathematical computer model, so what if I assumed the initial pressure at...

Hello, If I have the following known variables: - P1, Pressure of fluid entering the pipe = 50 psi - L, Length of pipe = 10 in - D, Diameter of pipe = 0.5 in I want to learn how to calculate: - P2, Pressure of fluid at the end of pipe. - Q1, Volumetric flow rate of fluid entering pipe. - Q2...

Thanks for the replies. I am reading on AM and FM (FSK) etc and will come back when I have proper questions to ask. Cheers.

I just came across PSK (Phase-Shift Keying) but haven't read it properly. Is PSK used for Frequency Modulation of FM radio? if so will I have to do the reverse/opposite of PSK to take away the carrier signal instead of Inverse FT? By fast FFT do you mean I will need a high processing power? What...

Thanks for the replies guys. I read a bit more on this. From looking at modulation and the OFDM method I understand that the frequencies 100MHz(Music Radio), 300-400MHz(TETRA) and WiFi(2.4GHz) is not the frequency of the actual signal but a carrier frequency which is used to transport the...

Hi All, I was wondering if someone could answer these questions for me please? Q1. If I stuck an antenna out, will it receive all the different signals e.g. Music Radio, TETRA, WiFi? Q2. What is the difference between these? I thought it was the frequency e.g. TETRA uses 300-400 MHz, WiFi uses...

I meant for example when you Laplace transform dx/dt you get sX(s) so I was asking what is 's'? You said it is complex but are we ever given a value for it so that we can use it in a transfer function to calculate the response/output of the system and get a real number? Many times I see on the...

I am trying to slowly learn control theory. I know how to find transfer function from a given differential equation of a system e.g mass/damper system. But what is the term 's'? Is that the frequency of inputs? In real life a mass/Spring damper would be a cars suspension. What will be a typical...

Hi, I am sorry for a late reply to my old thread but I went away and did some more learning and thought it will be better to ask the question here. I do now somewhat understand what the usefulness is but still don't quite get many things e.g. A transfer function is a ratio of output/input...

Ok can you give me an example of what sort of equations one would use to ramp the throttle signal up to make the acceleration smooth? What if the speed is linearly proportional to the throttle, can I not just use that relationship in a loop to ramp it until the speed is reached? That way the...

I am looking at control theory but I don't understand how this is used in real systems. Lets take an example of a cruise control system on a car which is also a control system. I can use an embedded computer connected to a hall effect sensor which measures the speed of the vehicle and also...

Hi, I understand that the static coefficient of friction dictates how much force is required to initiate motion/slippage and kinetic(dynamic) coefficient of friction dictates how much force is required to maintain motion/slippage. So considering a clutch with a friction and drive plate, what is...

I am still trying to understand Lagrange method. What I have learned till now is L = Kinetic Energy - Potential Energy Then: d/dt (dL/dx(dot)) - dL/dx = 0 So I resolve for this and get an equation of motion but how do I relate this to inertia ? :oldconfused: EDIT: I found K.E also equals to...

Thats what I was wondering whether the torque shown is back calculated but then not every car's gear ratios are known so how can someone put a random car on the dyno and know what torque the engine is delivering.

I will have a read through this. Thanks