Recent content by ilovescience85

I've attached the extracts from the learning material.

I'm a bit lost as we've never had anything like this question within the learning material. I've attached a larger image hopefully.

Would the following equation be used to help calculate the gain of the Proportional controller? I've attached the equation as a jpeg.

Homework Statement FIGURE 9 shows the block diagram of the control of an electric heatingsystem. The heater is driven from a voltage-controlled power supply, the voltage V1 being derived from a potientiometer. The output temperature, θO, is subject to disturbances, θD, because of changes in...

Ok so when you say multiply the rate of input change i.e.4 units/minute in my example by the derivative action do you mean the derivative action time? So 4 units/minute x 01. minutes to give an initial output increase of 0.4 units? Then a proportional increase of 5 units per 1 unit of input? Do...

Right so I get that proportional output will be, input output 0 0 1 5 2 10 so over the minute step change the input will rise 2 units and then fall 2 units? Equating to a proportional output of 0 initially...

I have these diagrams in the learning material (see attached) but i wouldn't class this as a waveform. So a input change of 1 unit would produce a output change of 5 units, then every 6 seconds this output would increase by 5 due to the derivative action?? Then after 30 seconds the input would...

Sorry that is a typo it should say derivative action time.

Homework Statement FIGURE 5 shows a proportional plus derivative controller that has aproportional band of 20% and a derivative action time of 0.1 minutes. Construct the shape of the output waveform for the triangular input waveform shown, if the input rises and falls at the rate of 4 units...

Yeah thanks I got some help from my buddy, just wanted to make sure I was drawing the components correctly. Never been great with electrical circuits. Thanks for the reply.

Homework Statement A microcontroller for temperature limit control has a 0 V to 5 V power supply. An NTC temperature sensor provides an input voltage to a ・} 5 V comparator op-amp. Depending upon whether the temperature is below or above the set limit, the output from the opamp comparator will...

I'm confused with your above post. If I've calulated that at 50% tapper the error is maximum @ 59.9875% why do i need to do a differentation for x?

So taking the figure i have the maximum error comes out at 50% so i understand that the max error does not coincide with max non-linearity. See attached image. I also understand that there is a point between 50% and 60% tapper position wherer the error will be it's max but I'm unsure how to find...

My differentation is great but i understand the flow of the equations and that all in all it is simply proving that the voltage divider is no linear and it's max non-linearity is when the potentiometer is 2/3 of the way along it's slider. I think i need to be at a better level of differentation...

See if these pictures work? this is what is in the learning material when it talks about the loading effect on a potentiometer.