The state space in problems of designing optimal control systems

The state space in problems of designing optimal control systems
 
 

Introduction


 
The study of the time-domain control system using state variables has been widely used recently due to the simplicity of the analysis.
 
 
The state of the system corresponds to a point in a certain Euclidean space, and the behavior of the system in time is characterized by the trajectory described by this point.
 
 
In this case, the mathematical apparatus includes ready solutions for analog and discrete LQR and DLQR controllers, the Kalman filter, and all this with the use of matrices and vectors, which makes it possible to write the equations of the control system in a generalized ...[/h]
+ 0 -

The perfect way to go offline from online

The perfect way to go offline from online
 
 
Hello!
 
 
A typical payment process for a real-world order, which I recently took:
 
(At the seller /in the online store I requested the number Z and provided everything that is needed for the personal price.)
 
 
- Hi. I want to pay and pick up the order number Z. - says the client and approaches the seller.
 
- Just a minute. Says the seller. The seller opens an online store system, copies the data and prints a piece of paper. "Now to the cashier and then back to me."
 
The client goes to the cashier, admiring the assortment of the store.
 
...
+ 0 -

The new encryptor frees up your files if you play PUBG

The new encryptor frees up your files if you play PUBG
 
 
The new encryptor associated with the game PlayerUnknown's Battlegrounds (PUBG), it seems just a joke, because to free your files, it does not require money. encryptor WCry or WannaCry shocked the world and jeopardized thousands of computers, although the case with the game PUBG is still not that big.
 
 

 
 
The existence of this virus became known to the public due to the efforts of MalwareHunterTeam . Its main function is that it encrypts all files and folders on the desktop, adding the .PUBG extension, in order to "force" you to play in the PlayerUnknown's Battlegrounds for an hour. We write the word "force" in quotation marks not by chance, because the encryptor gives you to understand that you can enter the code in the appropriate field to return the system to its normal state. Thus, it seems that this malicious program is just an innocuous joke.
 
 
In particular, the message, which is designed ...
+ 0 -

The dispute about the "right to oblivion": to consider whether the work of search engines is journalism?

In the High Court of London for several months, the case related to " right to oblivion ", adopted in 2014. Two businessmen who had problems with the law in the past required Google to remove information from the search engine that was out of date for several decades. Last week, the court satisfied the demands, but only one of the entrepreneurs.
 
 
More details about the situation and why Google brought the matter to court, we will tell below.
 
 
The dispute about the "right to oblivion": to consider whether the work of search engines is journalism? ...
+ 0 -

Bypassing locks of Roskomnadzor using ipv6 and 3proxy

Strangely enough, but the ILV still does not block sites that have an ipv6 address. Including Telegram, Rutracker and other resources.
 
 
That is, to remove restrictions, you need to somehow get into the ipv6 network. And "little blood"!
 
Bypassing locks of Roskomnadzor using ipv6 and 3proxy
 
 
It is not uncommon for fixed telephony operators to provide an IPv6 service (for example, DomPro). Simply connect the service and on the network interface of the router you accept the /64 prefix for your network.
 
Even if there is no such service, but you have a white ip, then you can use the technologies 6to4 to anycast ...
+ 0 -

Manage the browser with PHP and Selenium

Manage the browser with PHP and Selenium

Intro


 
Hello! Today I will tell you about how you can work with PHP with Selenium .
 
 
Most often, this is necessary when you are faced with the task of writing autotests for the web interface or your own parser /crawler.
 
 
From Wikipedia [/b]
"Selenium is a tool for automating the actions of a web browser.
 
In most cases, it is used to test Web applications, but this is not
 
is limited. In particular, the implementation of Selenium WebDriver for the browser phantomjs
 
often used as a web grabber. "

 
 
We will consider the following nuances:
 
 
 
Use of ...[/h]
+ 0 -

Meat mincer, super-robots and research institutes (Not Artificial Intelligence)

If you are already conducting a project for some years, do not you think that he is a knife from the history of number 1 or a plate from the history № 2


 
 

History №1


 
The case was many years ago at one of the domestic factories. In addition, the plant produced meat grinders, the usual manual, which were in every Soviet family. These mincers have been produced for many years, according to one technology. But there was always one problem with their production: the operation of sharpening the knife from the back side was very difficult and dangerous.
 
The fact is that the technology ...
[/h][/h]
+ 0 -

Digital events in Moscow from 16 to 22 April

Selection of key events in Moscow for the week
 
Digital events in Moscow from 16 to 22 April
 
Three Growth Hacking mechanics or how to systematically look for growth points
 
 
18 April (Wednesday)
 
ul. Brick, 33
 
free of charge
 
On April 1? at the HSE Business Incubator, the founder of the Growth Academy, Yuri Drogan, will talk about three working mechanics who will focus teamwork on growth.
 
 
III Forum "MULTIDIMENSIONAL RUSSIA-2018. Industry 4.0: Digital Transformation of Industrial Infrastructure »
 
 
18 April (Wednesday)
 
Offline (Pokrovka 47) and online
 
free of charge
 
About the forum in 36 seconds in the video announcement ...
+ 0 -

Online course on iOS-development for beginners from Redmadrobot and Contented

Online course on iOS-development for beginners from Redmadrobot and Contented
 
 
For those who have already dealt with the code, but do not know how to write for iOS yet, together with Contented, we launched an application development course.
 
 
Our timlids included in the course what the novice developer needs to know in order to learn further on their own and find their first job:
 
- Swift basics;
 
- Mechanics of interaction with the server API and backend development;
 
- Features of work with databases and frameworks for interaction with them.
 
 
Homework that you need to do, tests that you have to go through, and additional materials that are worth mastering - will...
+ 0 -