Meshing stiffness of variable hyperbolic arc gear based on finite element method
In the process of gear meshing, the periodic changes of the number of meshing teeth and meshing position lead to […]
In the process of gear meshing, the periodic changes of the number of meshing teeth and meshing position lead to […]
Helical gear is a type of gear used in a variety of applications where smooth operation, high speed, and/or heavy
By using romax designer software, the optimal gear modification parameters are put into the gear modification module, and the simulation
The static stress analysis of gear can check the contact and bending strength of gear, and analyze the stress, damage
After the research model of transmission gear transmission mechanism is established, the software is used to set the operating conditions
The LSTM network model is established by selecting appropriate parameters to predict the oil temperature of gearbox. In order to
With the “innovation, coordination, green, open, sharing” five development concepts and development needs, industrial equipment demand of high quality quantification,
As a new machine learning method, deep learning method has been widely used in image processing, speech recognition, brain computer
Chen et al. deduced and studied the influence of the meshing stiffness of the internal meshing gear pair and the
In recent years, deep learning has been widely concerned. Deep learning constructs a neural network model with many hidden layers
(1) Based on the finite element method, the meshing stiffness finite element calculation model and meshing stiffness calculation method of
In the process of gear meshing, the periodic changes of the number of meshing teeth and meshing position lead to
With the development of national industrial equipment and the urgent need for industrial products to be improved, the bearing capacity,
Based on the single degree of freedom torsion model, Zajkek et al. used parabolic functions to describe the engagement stiffness
Gear system dynamics is a complex multi-coupling dynamics system, which strictly follows the system input-carrier analysis-response output dynamic control response
The five development concepts of innovation, coordination, green, open and sharing are put forward, green production and green transformation are
In the process of tractor gear transmission, the transmission load is large, the running speed is low, and the transmission
In the design of American standard gears, steel, Grade2, hrc58-64 (AGMA), case carbonized steel and case hardened gear materials similar
The bending fatigue life of tractor gear is closely related to the selection of gear modulus, which can be selected
The input of multi-channel signal can collect fault feature information more comprehensively, and CNN has achieved great success in the
Take the detection of high-speed shaft gear as an example. The sensor data of high-speed shaft bearing position is taken
It is tested and verified on a 1.5 MW wind turbine in a wind farm. The gearbox of the fan
For variable speed rotating machinery such as fan, in the process of operation, various signals reflecting its operation information are
The ultimate goal of dynamic analysis is to design object products with high dynamic performance. The coupling dynamic model of
The data compression algorithm based on the gearbox configuration is based on the physical structure of the gearbox and the
The improved data preprocessing process is a method to extract effective data by combining gearbox configuration with real-time data acquisition
A centralized and unified monitoring center is proposed to complete the functions of real-time data acquisition and remote centralized control.
Condition monitoring of wind turbine can understand the health status of wind turbine in real time and reduce the maintenance
The hardware order tracking needs professional Keyphasor device, which has high cost, complex installation and large application scope; the order
The dynamic modeling method of multi-stage gear system under the condition of large deformation is studied. Taking the cutting part
In order to make up for the disadvantage that ICA can only be applied to the blind source separation problem
Dynamic substructure method is an effective method to analyze complex mechanical systems and structural systems. Although some scholars have used
In mechanical transmission equipment, gearbox plays an extremely important role, it is widely used in all walks of life. It
The load stroke curves of the two processes are shown in the figure. It can be seen from the figure
The traditional and improved processes are used for experimental study. The typical deformation conditions of the blank during the deformation
In this paper, the first mock exam of the internal gear of a solid cylinder with no hub hub and
The traditional closed die forging of internal gear is shown in figure (a). In the process of pressing the blank
With reliable transmission quality and efficiency, gears are widely used in mechanical field, especially in military industry, aerospace and other
The figure is the confusion matrix corresponding to the method in this paper, through which the identification of each type
Gear is of great significance to all kinds of mechanical equipment. Its performance may directly affect the service life and
In order to verify the advantages and effectiveness of intelligent fault diagnosis of gearbox bearing based on Sanc and 1d-cnn,
The parameters of neural network mainly include: learning rate, cost function, activation function, number of learning rounds, batch size, network
In order to verify the effectiveness of the proposed method, the experimental study is carried out on the zjs50 comprehensive
Combined with the signal separation ability of Sanc and the intelligent feature extraction and fault identification ability of 1d-cnn, this
Combined with the signal separation ability of Sanc and the intelligent feature extraction and fault identification ability of 1d-cnn, this
Gear reducer is a kind of closed mechanical transmission device. Its main function is to reduce the speed of input
The data in normal working state is selected as the training set of the model, with a total of 12800
LSTM principle LSTM model is a special form of recurrent neural network (RNN), which can mine the relationship between the
Data preprocessing The data comes from the unit operation data recorded by SCADA system of a wind farm in Northwest
As an important part of wind turbine, gearbox is mainly composed of gear, rolling bearing and other parts. The common
In order to verify the superiority of this method in engineering application, relevant tests are carried out on the closed
When multiple faults coexist, different fault features need to be decomposed into different intrinsic mode functions. Therefore, EEMD is needed
In the process of tractor gear transmission, the transmission load is large, the running speed is low, and the transmission
As the most commonly used mechanical transmission components, gearbox faults are very common, including gear faults, bearing outer ring, inner
Gearbox has the advantages of compact structure and high transmission efficiency, which is the most widely used transmission component at
Because the wind turbine often works in the harsh environment, the number of units is too much, so the fault
According to the analysis of the forming process of the mechanical gear forging parts, there are two main forming processes
In order to further verify the effectiveness of this modification method, the optimized gear is assembled on the transmission for
Gear modification has great influence on the vibration and noise of gear and the load distribution on the tooth surface.
There are some defects in the process of die forging, such as insufficient mold filling and cracks. In order to