Control refers to systems that control other systems, whether that be industrial machinery, lighting or devices used in a home

learn more… | top users | synonyms

0
votes
0answers
17 views

What is a Thyristor Switched Series Capacitor (TSSC)?

I'm struggling to understand the physical difference between the Thyristor Switched Series Capacitor (TSSC) and the Thyristor Controlled Series Capacitor (TCSC). From this book, I understand that a ...
1
vote
1answer
51 views

What is the difference between disturbance and noise for dynamic systems?

In most references from dynamic system theory, the following linear continuous dynamic system is considered. $$\frac{\text{d}x(t)}{\text{d}t}=Ax(t)+Bu(t)+Dd_{1}(t)\quad (1)$$ $$y(t)=Cx(t)+Ed_{2}(t) ...
0
votes
2answers
39 views

Controlling DC motor without Arduino motor shield

I am trying to make a line follower with the help of this tutorial. In the tutorial they have used Arduino motor shield. I want to know, is there any way to control the motors without using Ardumoto? ...
4
votes
2answers
42 views

Is it possible to determine load on a stepper motor when stopped

Is there a way that the torque on a stepper motor can be determined without some kind of additional force sensor. Additional electronics such as current shunts etc would be acceptable. I would like ...
0
votes
1answer
45 views

control circuit of a humanoid robot (something like i-cub or Asimo)

my friend and I are building the upper body of a humanoid robot for our MSc thesis project. There are 24 dc motors in this robot the thing I want to know is what is the best way to command these ...
0
votes
4answers
78 views

Electrically control material to channel light from specific angle

I am wondering if there is any material that can be electrically controlled so that light from a specific angle or diretion is received. Is it possible to manufacture such materials using ...
0
votes
0answers
41 views

Making a simple wireless remote control circuit to control a micro motor

All I need is to be able to activate a small 4mm by 6mm micro motor with a remote wireless switch. Just on and off. I have searched everywhere for help and I can't figure anything out, I am ...
0
votes
0answers
23 views

What factors affect the choice of a particular variant of the Clarke transformation?

I have a question about the different variants of Clarke transformation. In one of the responses on this site, I read the following: 3->2 symmetric component transforms (a.k.a. "Clarke") are not ...
0
votes
0answers
42 views

Computer Controling The Mouse Of Another Computer Issue

I am a nooby to electronics but I have a decent background in Programming. I have a project I am trying to do which is to make computer1 control the mouse of computer2. Basically, I want to use motors ...
0
votes
0answers
40 views

Stepper motor with integrated circuits and encoder controlled by custom software

I am new to electronics but I have decent experience in programming. What I would like to do is have 2 stepper motors attached to my computer, and then develop a program that would control their ...
0
votes
1answer
62 views

using one 555 timer to control the pulse of another

tried making something like this Limit Number Of Pulses From 555 Or Similar but it doesn't work. I'm not sure what it needs. I'm trying to make the first timer put out voltage to the second one for ...
0
votes
0answers
28 views

How to fit practical PID controller state equations into a state-space matrix representation (to be used for RK4 through MATLAB)?

So i need to implement an RK4 algorithm of a state-space matrix in order to convert it from continous to discrete time ( using RK4 is the specified method in the assignment Q). Diagram of the ...
0
votes
1answer
35 views

Motor control solution on the truntable for computer vision and optics usage

I'm lack of electrical engineering knowledge, I'm just a software engineer, so I need your help on the turntable design and control problem. I need a very accurate turntable to allow me to scan some ...
1
vote
2answers
224 views

Toggle two different LEDs with one T Flip flop

Imagine we have one green LED, one blue LED, power supply and resistors and grounds. We also have a switch. Can we toggle between the two different LEDs when the switch is pushed? If the blue LED is ...
0
votes
2answers
49 views

What is the reason behind transfer function representation valid for only LTI system?

One of the major advantages of state space representation is the fact that it can represent non-LTI system as well. I tried searching a lot to find a reason but couldn't get a reason explicitly ...
2
votes
2answers
78 views

Oscillation between the inverting input and output of opamp

I am looking into a circuit simlar to what is attached here, when I place a probe between the opamp's output and the inverting input - I see oscillation when V1 = 0V. But when voltage is applied to V1 ...
0
votes
1answer
38 views

What are the tradeoffs between control vs software algorithms (in charge pump PLL)?

I have a grid signal (45-65 Hz) that I've sampled with an ADC and put it through an IIR LPF so that noise does not effect the zero crossing detection. All I want is the frequency of the signal. Now ...
0
votes
0answers
30 views

Thyristor controlled rectifier (TCR) and thyristor switched capacitance (TCS): Why do we need them and how do they work?

Meaning of TCS and TCR in the context HVDC and power systems? I read somewhere that they are to control amount of inductance and capacitance on the line. If this is the case, how do they work?
0
votes
0answers
41 views

Noiseless electronic ceiling fan speed control

Is it a good idea to control speed of a ceiling fan by letting the TRIAC run in PWM mode as explained? The TRIAC is allowd to pass the current for a complete cycle of the mains and then stopped for a ...
0
votes
0answers
50 views

Digital Buck Control

I wish to emulate a voltage mode buck control using FPGA. My idea was to obtain a discrete state space equation that can be implemented digitally. At first I calculated to the buck small signal open ...
0
votes
0answers
38 views

Anti-windup scheme for PID controller [duplicate]

this is the designed pid controller and i am using TL084 op-amps which has +15 volts and -15 volts as their supply. when the error is generated, due to integrator the control signal(Vc) output is ...
-1
votes
1answer
68 views

Calculating DC Brushless Motor Position

I am using a brush-less motor in one of my projects and I need a decent method of sensing the motor position so I know what coils to turn on and off. I looked a bit into sensing Back-EMF, but I did ...
2
votes
4answers
141 views

Anti-wind up scheme in the implementation of PID controller

I want to implement designed PID controller. But I am facing the problem of how to limit the saturation limit in both positive and negative direction? I tried using zener diode, but I would like to ...
0
votes
0answers
64 views

Finding transfer function of this signal flow graph using Mason's Rule

In the following signal flow graph, how do you find the transfer function Vload(s)/Idist(s) using Mason's rule? The solutions manual says it would be the same transfer function as if you were finding ...
1
vote
2answers
114 views

How to simplify this block diagram to get the given transfer function?

Given this block diagram, I'm trying to derive the transfer function. I've tried moving the 2 branch to either side of the then getting something like this But I'm not sure how to simplify it ...
1
vote
2answers
67 views

Finding transfer function of this RL circuit

Have a look at this circuit. I am to find the transfer function which is defined as \$V_L(s)/V(s)\$. Now I don't understand the solution. First of all, it defines \$V_L(s)\$ at the bottom as ...
1
vote
2answers
395 views

Slow down stepper motor's speed using stepper driver DRV 8825

I've got a Nema 17, rated at 0.8Amps, stepping angle of 1.8 degrees. The motor looks like this, and has six wires coming out of it: The four wires I've used are the ones labeled below (I was ...
-1
votes
1answer
166 views

Need suggestions on control system engineering [closed]

I am sophomore studying control systems and the problems given in the books( like Norman Nise ) look too easy. Please suggest some good book with really good problems.
1
vote
2answers
109 views

How do I control several individual LEDs with Arduino?

I am working in a book store and I have the task of making an indication of a book place in the Library Cupboard with LEDs. I need to control about 300 LEDs with Arduino. What is the optimum way to do ...
0
votes
2answers
249 views

How to calculate Kp, Kd and Ki?

The motor operates within 140 rev/min to 600 rev/min. The controller gives an output in the range 4 to 20 mA. The sensor output reading equivalent to 400 rev/min, actual reading was 404 rev/min. The ...
0
votes
1answer
88 views

Transfer Function: State Space for DC motor

General question on making state space equations for a DC motor. In the link below, why are both the electrical and dynamics equations 3 and 4 used to make a state space eqn.8, instead of combining ...
1
vote
1answer
61 views

How do I enable/disable a running 555 astable oscillator with a control signal?

I am going to control a fan using PWM signal. PWM is generated by a 555 IC. The duty cycle rate of the PWM is controlled by a PTC thermistor. And an NTC thermistor decides when to turn on and off the ...
3
votes
1answer
381 views

Linear Regulator: MOSFET vs BJT

Currently I am doing a project on a voltage regulator. Can you tell me some advantages of MOSFETs over BJT? Apart from a higher power loss, I can not find much. In control engineering it is much more ...
0
votes
1answer
83 views

Response of a stable second-order transfer function to a unit sine wave input

In the lecture slides from my university it says that: "The response of a stable second-order transfer function to a unit sine wave input is:" ...
0
votes
1answer
48 views

When do I have to use rectifier-inverter, and when is “dimmer circuit” sufficient in driving AC motor?

I'm trying to design a device that is to use a variable speed 1-phase AC motor. I still haven't decided upon power and other parameters of the motor. I have a few models to choose from, with "bigger ...
-2
votes
2answers
230 views

130V DC Motor Control

I am interested in building a control circuit for a motor. More specifically this motor. The model I want to control is the 130V model, 0.48A, which should make it at ~62W for the motor, and 1/17 ...
-2
votes
2answers
58 views

Model and Control of a Physical System [closed]

Suppose i have a physical system (set of interacting elements ) that i want to control. Best thing we can do to understand this physical system and hence control it, is to model it. We ...
2
votes
1answer
94 views

Contact arcing, how to avoid?

Recently my water heater's thermostat failed. It's just a simple mechanical one, with a piece of metal that "pops" and connects or disconnects the heating element. I would guess that what made it ...
1
vote
2answers
690 views

How do I find the second order transfer function from this step response diagram?

I have the following diagram of a system's step response: I'm having trouble understanding how to calculate the system's transfer function, given this diagram. Specifically, I don't understand how ...
0
votes
1answer
162 views

does Tera Term handle software flow control internally? [closed]

The title may be a little confusing but i'll explain the situation: We have the following situation: ARM MCU -> UART -> FTDI chip -> USB -> PC -> Tera Term terminal The FTDI chip has built-in hard- ...
4
votes
1answer
126 views

Practical Limit of Feedback Control Systems WRT Bandwidth

In a digital feedback control system, I'm interested in the practical limit of what the correctable bandwidth is. For example, given a very simple system: A sensor can sample a simple X position ...
2
votes
3answers
123 views

What is the usefulness of Internal Stability?

In the analysis of a feedback control system is it important that a sub-network be itself stable. i.e. if I were to break apart the main complex system and just study a single feedback loop, is it ...
2
votes
6answers
779 views

How to create an electronically controllable resistance to a physical movement?

What is the best way to create an electronically controllable resistance to a physical movement? For example, at the gym you control the resistance to movement by putting more load, more weight. Is ...
1
vote
0answers
383 views

How well does a Variac work for fan speed control?

I would like to run a standard multi-speed desk fan at a lower speed than its minimum setting. On Amazon, one reviewer recommended a variac for fan control, saying that it could adjust the fan from ...
-1
votes
1answer
88 views

Digital Control Engineering book recommendations [closed]

What are good books on digital control engineering specifically? I'm a third year electrical/computer engineering student who will be doing a course on digital control next semester, but would like to ...
0
votes
1answer
68 views

Stepper Control using DC Brushed Motor Driver

Is there any way to control a bipolar stepper motor using one or more DC brushed motor drivers? My only interface to the motors is setting an integer to represent their speed, ex -100 to 100. I ...
1
vote
1answer
148 views

PID controller modelling

According to the following simple PID control system: We could create the equation: $$(R(s)-Y(s))C(s)P(s) = Y(s)$$ Wich will lead us to $$\frac{Y}{R}=\frac{CP}{1+CP}$$ So, if we want to ...
2
votes
2answers
456 views

Voltage regulator vs. voltage controller

I frequently meet the references to voltage-regulators and voltage-controllers. However, looking at the specs I find them to perform the same function. Is there a difference between the two, or ...
2
votes
1answer
76 views

Determine the robustness of a controller

How do I determine whether a PID controller I've designed is stable? How do I determine its stability due to the transfer function it's being applied to, and how well it rejects disturbance and ...
3
votes
1answer
82 views

Observer Based Control System Design

Consider the discrete-time system described by $$ x(k+1) = \begin{pmatrix}0 & 1 \\ -2 & -3\end{pmatrix}x(k) + \begin{pmatrix}0\\1\end{pmatrix}u(k) $$ a) Find a feedback state vector that ...