# Questions tagged [control-system]

A control system regulates the behavior of other devices or systems, usually using a control loop. Examples are a home heating controller using a thermostat, a regulator keeping a drone stable, and industrial control systems used for controlling processes or machines.

1,211 questions
Filter by
Sorted by
Tagged with
18 views

### How to get Transfer Function from R to Y?

How to get Transfer Function from R to Y? I can group G2 and G3 up by doing G2/1+G2G3 Correct? Dont really know what to do from there
1 vote
340 views

### Drawing Signal Flow Graph from Bridged-T Network

I am confused about where to place R1. Is it a feed-forward or feedback term? Y1 and Y2 are admittances representing the capacitors.
66 views

### The effect of input and output impedance

This picture shows the classical feedback system and this assumption about this system. "the input impedances of both the amplifier and the feedback network are infinite and their output ...
242 views

### Non inverting buck boost transfer function

When considering the compensation of a non inverting buck boost (single inductor), the datasheet considers to take into account the worst transfer function between the buck transfer function and the ...
51 views

### Multi-loop systems block reduction techniques

Do I start by multiplying 18/s+3 * 1/s+3 = 18/(s+3)^(2)? Then is it (18/(s+3)^(2))/(1+(18/(s+3)^(2)*4)) = 18 / ((s + 3)^2 * (72 / (s + 3)^2 + 1))?
474 views

### Break in and break away point

Consider the open loop transfer function of $\frac K{s^3+2s^2+2s}$. In a negative feedback system, that has three poles $0, -1+i ,-1-i$. Is there any break-in or break-away point because only one ...
728 views

### Design of compensator type 2 for current mode control of boost converter

I have designed a boost converter with peak current mode control in PLECS. I have used the method of k factor approach to design the compensator. The Bode plot transfer function of the power stage is ...
1 vote
80 views

### Proof that two systems are equivalent

I was wondering if someone could help me with the proper answer for this? Below is the question and my solution. I was hoping for partial points but I don't know what can be marked partially correct ...
29 views

### Does current mode control for dc/dc conv imply a constant current output?

I am getting very confused, I have read articles about current mode and voltage mode control, and it seems that most converters use current mode control - which seems has two nested control loops. The ...
1 vote
368 views

### Nichols plot confusion

The transfer function is $F(p)=10/(p^2+2p+1).$ Using Wolfram Alpha, the Nichols plot shows that the argument $\to -\pi$ when $\omega \to +\infty$. However, calculating the argument on paper ...
1 vote
125 views

### Determining Transfer Function from Block Diagram

I'm doing my homework and need to find a transfer function W_eg (from input g to output e) using given block diagram. The problem is that the output e disappeared. I made a step by step solution how I ...
1k views

### Break away/Break in angle in Root Locus method

We are learning Root Locus in our introductory controls course, and one thing has really been confusing me. When the poles are on real axis, is the breakaway angle always 90 degrees? Is there a simple ...