Automatic speed regulation system of ball milling machine and method therefor

The invention discloses an improved injury locating and injury degree recognizing method based on vibration. The method comprises the steps: when a structural body is not injured, collecting vibration signals through an acceleration sensor and a data acquisition system and storing the collected vibration signals, wherein the acceleration sensor and the data acquisition system are arranged on the structural body; secondly, in the process of detecting whether the structural body is injured, carrying out structural body modal analysis on collected data through a modal analysis system to obtain the modal frequency and the modal shape of former iota orders during detection of the structural body, and regularizing the acquired modal shape; thirdly, calculating the injury localization index alpha r of each structural unit according to the modal frequency and the modal shape of the former iota orders before the structural body is injured and the modal frequency and the modal shape of the former iota orders after the structural body is injured, and determining that the rth structural unit is injured if alpha r is larger than 1; fourthly, estimating the injury degree index delta r of the structural unit. The method has the advantages that assumption uncertainty of an existing method is avoided, misjudgment of the position of small injuries is effectively avoided, the accuracy of the injury degree recognition result is improved, and the method is suitable for engineering application.

Improved injury locating and injury degree recognizing method based on vibration

The present invention discloses a non-contact ball mill rotating cylinder vibration signal acquisition system. The system comprises a data acquisition terminal comprising a signal acquisition module, a signal conditioning module, an AD data acquisition module, a processor module and a wireless sending module, and a reception processing terminal comprising a wireless reception module. A laser vibration sensor is used at the data acquisition terminal to acquire a ball mill cylinder vibration signal, and the acquired vibration signal is carried out the signal conditioning, the AD data acquisition and the Fourier transform coherent processing, then is sent by the wireless sending module and then is received by the wireless reception module. According to the present invention, the continuous power supply problem of a conventional vibration sensor arranged on the ball mill cylinder wall directly is overcome by using the laser vibration sensor, and the data is sent and received in a wireless transmission manner, thereby not only satisfying the data real-time processing demand, but also improving the mobility and versatility of a device system.

Non-contact ball mill rotating cylinder vibration signal acquisition system

The invention discloses an adjustment method based on an intelligent automatic speed adjustment system for a grinder. The adjustment method comprises the steps that initialization is performed to check whether each module works normally; vibration data of a medium impacting on the barrel wall of the grinder and technological data of operation of the grinder are acquired; whether swelling occurs is judged; if yes, a swelling treatment process is started; if not, a working condition is normal, so that a current rotation speed is not adjusted; when the vibration data of the barrel wall of the grinder is smaller than P1, and a slope is smaller than C1, the speed is adjusted to H1 hertz; when the slope is between C1 and C2, the speed is adjusted to H2 hertz; when the slope is greater than C2, the current rotation speed is maintained; when the vibration data of the barrel wall is greater than P2, and the slope is greater than C3, the speed is adjusted to H4 hertz; and when the slope is smaller than C3, the speed is adjusted to H3 hertz; after a speed adjustment command is emitted, the rotation speed is subjected to amplitude limiting treatment and then the rotation speed of the grinder is adjusted through the motor, so that intelligent automatic speed adjustment for the grinder is realized; the current power and oil pressure value of the grinder are cooperatively taken as reference, so that ore grinding efficiency can be improved to the greatest extent by the intelligent automatic speed adjustment system for the grinder; and economic benefit of an ore concentration plant is improved.

Adjustment method based on intelligent automatic speed adjustment system for grinder

The invention relates to a contact test analysis system suitable for a rotary mill cylinder. The system comprises a mill cylinder at the external of a mill, and a rolling monitoring device in rollingcontact with the mill cylinder; motion signals of the mill cylinder are connected with a mill data processing device, a single-chip, a power spectrum analyzer and a characteristic identifier of an online monitoring and analyzing system through the rolling monitoring device in sequence; an output end of the characteristic identifier is connected with a mill parameter adjuster and a recording/displaying device; and the mill parameter adjuster is connected with the single-chip. The system can be adapted to a working state monitoring principle in a ball mill in a rotary working state, and predictsthe working state of the ball mill to overcome the problems in traditional ball mill state monitoring.

Contact test analysis system suitable for rotary mill cylinder and testing method thereof

The invention relates to a wet method ball mill belly expansion fault prediction device and a method. The invention is characterized in that the device comprises a vibration signal detecting device and a monitoring computer, wherein the vibration signal detecting device is arranged on the surface of a tube wall of a ball mill and has the wireless communication function, the monitoring computer is arranged near the ball mill and has the wireless communication function, an acceleration sensor, an analog-to-digital conversion unit, a central processing unit, a data storage unit and a wireless data sending unit are prearranged in the vibration signal detecting device, a wireless data receiving unit, a ball mill belly expansion fault model training unit and a ball mill belly expansion fault prediction unit are prearranged in the monitoring computer, the central processing unit controls the analog-to-digital conversion unit to carry out analog-to-digital conversion on vibration acceleration signals collected by the acceleration sensor and to store the vibration acceleration signals into the data storage unit, the central processing unit calculates the data stored in the data storage unit, and sends the data to the wireless data receiving unit through the wireless data sending unit, and the wireless data receiving unit transmits the received data to the belly expansion fault model training unit and the fault prediction unit.

Wet method ball mill belly expansion fault prediction device and method

The invention relates to an ore milling concentration monitoring method for a wet ball mill. The method comprises the following steps of: 1) arranging a vibration sensor and a data acquisition device on a cylindrical wall of the ball mill; 2) acquiring vibration signals of the cylindrical wall of the ball mill by the vibration sensor, transmitting the vibration signals to the a data acquisition device, and drawing a statistical histogram of the vibration signals by the data acquisition device; 3) adopting laplace distribution of zero mean as best fit approximation of vibration signal distribution of the cylindrical wall of the ball mill according to the statistical histogram, and obtaining an estimated value of a vibration signal statistical parameter according to a maximum likelihood estimation of the laplace distribution; 4) changing the ore milling concentration in the ball mill to obtain a corresponding parameter estimated value; 5) expressing the ore milling concentration Cw in the ball mill as undetermined parameters a0, a1 and a2 in a quadratic polynomial determination expression of the ore milling concentration estimated value; and 6) acquiring the vibration signals of thecylindrical wall under different conditions, calculating the estimated value of the statistical parameter, substituting the estimated value into a quadratic polynomial determined in the step 5), and obtaining the corresponding estimated value of the ore milling concentration through calculation.

Ore milling concentration monitoring method for wet ball mill

Popular Tasks used by Researchers

How can I help with your research?

Get more enhanced response by uploading the PDFs you want me to reference.

No relevant PDFs in your library

SciSpace is the AI research assistant for academics. Run systematic literature reviews on 280M+ papers, and write papers with cited sources. Trusted by 1M+ students, PhDs & researchers.

SciSpace | AI for Research

We encountered an error while loading the panel. Please try refreshing the page.

Something went wrong

Analyze PDFs

Code & Manuscripts

Funding & Grants

Literature & Patents

Medical & Clinical Data

Systematic Review

Visualize & Present

Web & Data

Build a Google Scholar-like website for your research.

Build a website

Create charts and images for your research

Create a Chart

Write a paper for submission to a journal

Draft a manuscript

Patent Search

Design eye-catching scientific posters in minutes.

Scientific Poster Generation

Systematic Literature Review

Anyone with the link can view this chat. You can switch it back to private anytime.

One task is running at the moment. Your messages will be shown right after.

Drag and drop or click here to browse

Loved by <highlight>1 million+</highlight> researchers

Extract a list of specific topics and their sources from unstructured text

Topics

Compare and analyze relevant papers that matches with your search

Papers

Get insights from PDFs and bookmarked papers from your library

My library

Recent searches

Try searching for:

Catch AI-generated content in scholarly and non-scholarly content

{ai} Detector

Ai Writer

Get PDF Summaries, highlighted text explanations 

Chat with PDF

Effortlessly create in-text citations and bibliographies in APA and 2,500 other formats

Citation generator

Get explanations, summaries, and answers on academic papers

Ease up your research workflow with {scispace}'s cohort of exciting AI tools

Elevate your academic writing skills and convey your ideas the way you want

Paraphraser

Explore our range of reading and writing tools

Your file is being prepared and should be ready in a few minutes. If it's a large file, it might take a bit longer. You can close this window, and we'll email you the file when it's done.

You have reached a maximum limit of <strong>{limit}</strong> columns in the table. Remove at least <strong>1</strong> column to add or create another one.

Yanlin Xiang

Author Tools

Chat about Author

Papers

Wet method ball mill belly expansion fault prediction device and method

Ore milling concentration monitoring method for wet ball mill