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# Questions tagged [control-system]

A system that may be electronic circuits or even software that uses control theory (principally differential equations) to control an output by monitoring various aspects of the system under control and varying inputs all towards meeting a defined goal. Some famous examples are controlling a rockets thrust angle to ensure directional control.

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### What should be DC gain of the system?

Step response of system is $c(t) = 5 - 0.5e^{-2t} + 8e^{-t}$ then find steady state gain. Answer is -7.5 Now in book solution is given as : Since this is step response we will find impulse ...
2k views

### How does control theory apply to my real-world processor-controlled boost converter?

I have a limited understanding of control theory. I dealt with poles and zeroes and transfer functions in school. I've implemented several microprocessor-based control schemes for DC/DC converters. ...
89k views

### What is a “dry contact input”?

I'm a PC software guy, a newbie to electronics. Recently, I've got a project in which I need to source for a DAQ that can provide dry contact inputs to an interfacing digital output controller. The ...
141 views

### Signal flow simplification

I've looked at the various simplifications that can be made for signal flaw diagrams to combine branches; however, I can't work out how one can apply a transformation to simplify the following ...
1k views

### Can you control a 12V Solenoid Valve using motor dev kit MCLV-2?

The MCLV-2 is a motor driver development board, of 24 volt and up to 15Amp (in total). Aside driving a motor, I'm also interested in testing to see if these circuitries are suitable to run a 12 volt ...
31k views

### Undamped natural frequency

What's the definition of the undamped natural frequency? I've looked and I cannot find it. A second order system has the following transfer function  H(s) = \frac{A_o \omega_n^2}{s^2 + 2 \zeta \...
8k views

### What are the major advantages of using a closed-loop over an open-loop and vice versa?

I'm trying to gain a better understanding on the pros and cons using closed-loop or open-loop motor control. Also trying to better learn when it's more sensible to apply each one
8k views

### Conditional stability

I'm learning about op-amps and feedback and how feedback affects their stability. I've been reading about gain and phase margin and their uses when I came across this: I don't quite understand how ...
409 views

### PID controller, tuning and creation

I have been having some good success with my first PID controller. It seems it needs just a little bit more work. Below is a picture of a sample run with my controller implemented. Currently I only ...
I have a control system that we are working on with a forward transfer function of:- $\dfrac{K(2s+3)}{s^2(s^4+2s^3+4s^2+2s+7)}$ So I've set up the routh table for this, I've found there are 2 ...