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

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Where can I download “wifi android app 16DO module”? [on hold]

I got this product which is a control relay board module for android app, but I need to get the android app for it, where can I download it, and is it free? Thanks
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23 views

Any chance I can continue both telecommunications and control? [on hold]

I'm interested in both Control Engineering and Telecommunications Engineering (specially Communication systems), and I have to choose one of them as my main field (It would be my sixth semester in ...
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1answer
32 views

Pump control system without arduino

So i saw this schematics i pretty much understood it all, the comparetors, the sensors, the variable resistors , but because i am a beginner i still dont understand some things. 1- why did he use a ...
2
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1answer
36 views

Robotics Experts: How to do trajectory planning for a robotic arm

I have a homemade 3D printed prosthetic robotic arm similar to the picture below Right now this is completely open loop control system. The elbow, wrist and base can only rotate in around its ...
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87 views

How to design controllers “properly”?

It may sound like the "easy way" to ask it here, but this question (along with a couple others I've posted which were more specific) is the result of years of research on the topic - on and off as ...
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1answer
59 views

Lead-lag process control

What is the locus of the following system, and for what value of \$\alpha\$ is the damping ratio 0.5?
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33 views

What is the “Home” feature of the Stepper Motor Driver IC (DRV8811)?

While doing research on efficient methods for driving stepper motors I came across the Texas Instrument IC DRV8811. This particular device has a Home feature that is explained very little. The ...
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4answers
66 views

Can gain and phase margins be obtained from step responses?

We need to comply to specific gain and phase margins requirements whereas the controller has been tuned on-line without knowing the plant transfer function (in order to save time). The response does ...
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0answers
18 views

Controlling Raspberry Pi GPIO using Javascript [closed]

I am familiarizing myself with the GPIO pins on the Raspberry pi and was wondering what the easiest way to control them would be using HTML and javascript over a webpage. My intent is to have a button ...
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2answers
103 views

control AC fan speed using microcontroller

I have been trying for a long time to digitally control the fan speed and light intensity of a dimmable LED bulb, but I am not able to. Basically I want to replace the mechanical potentiometer with a ...
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3answers
41 views

Does this article's appendix contain an error (is the heating system described integral control)?

I am confused by the primer on control theory found at the end of the following paper, which concerns an instance of integral control in a biological system. Since it concerns integral control, I ...
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1answer
67 views

Arduino Motor Control Circuit with Power Transistor and H-Bridge

I'm new to motor control, and I'm trying to create a circuit to control this motor: http://www.robotshop.com/en/banebots-rs-550-motor-12v-19300rpm.html The key electrical characteristics for my ...
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36 views

Using a suitable Compensator problem - Control Theory

Problem: \$\,\,\,\$ A system is described by the open loop transfer function $$\frac{k(s+2)(s+7)}{(s+5)(s^2+2s+5)}$$ Design a suitable compensator in order to have \$w_n =\sqrt{10}\,rad/s\$ and ...
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35 views

Combine Bluetooth Buttons (Volume up / Next, Volume Down / Previous)

I have a question regarding the control of a bluetooth device, which I would like to connect to some old headphones. Bluetooth SMD Module - BC127 There are some pins on which I can connect the ...
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2answers
44 views

A relay for each terminal (live and neutral)

I'm investigating a control circuit that switches a heating element. From what I can see there is a relay on both the neutral and live to the heater. The relays are controlled together and cannot ...
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3answers
81 views

What is the name of a component that combines a switch with a variable resistor?

I had some lights with a rotating switch that would turn them on/off, and then continuing to turn the switch would make them brighter. What sort of switch is this called? (it had a physical "click" to ...
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0answers
20 views

Reaction vs Rotary torque sensor for force/impedance control

I am working on a robotic system that is requiring a torque feedback from a rotational (single axis) joint for a force or impedance control loop. When researching the available torque sensors I've ...
2
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1answer
52 views

High Power H-Bridge with IR2125 Drivers Problem

I'm currently stuck on a problem when trying to drive a 140V DC motor using an H-Bridge with 4 high-power mosfets and 4 IR2125 drivers. I'm using as input to the drivers a signal generator of 5V in ...
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1answer
26 views

In adaptive signal processing, what does it mean for an arrow to go through a block?

For example, in this case the FIR digital filter has an arrow going through it. This is common in the signal processing comunity but very unintuitive from a control perspective i.e. where is the ...
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33 views

Adapt servo for torque input

I want cheap motors to reach a reference trajectory (positions, velocities, accelerations) and use torque as input for the system. This is intended for rapid movement reproduction. I would like to ...
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3answers
151 views

How does the automatic garage door opener know which button I've pushed on the wall control panel?

The wired wall control panel in my garage has only 2 wires connected to it. Yet somehow it acts different when I push the big "door" button than when I push the "light" button or the "lock" button. ...
2
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1answer
85 views

Loop gain(s) for multi-loop circuits

With the aim to combine some good properties of two different opamp types we can make use of the composite amplifier principle (see the figure). For example, we could combine good (small) input offset ...
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46 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 ...
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1answer
60 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) ...
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2answers
79 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? ...
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2answers
116 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 ...
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1answer
69 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 ...
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4answers
79 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 ...
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139 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 ...
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28 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 ...
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46 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 ...
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49 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 ...
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1answer
90 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 ...
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55 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 ...
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1answer
39 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 ...
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2answers
249 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 ...
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2answers
64 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 ...
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2answers
101 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 ...
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1answer
39 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 ...
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32 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?
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55 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 ...
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54 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 ...
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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 ...
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1answer
87 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 ...
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4answers
206 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 ...
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0answers
109 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 ...
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2answers
133 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 ...
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2answers
90 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 ...
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2answers
975 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 ...
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1answer
176 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.