scholarly journals DRAWING UP THE POWER BALANCE FOR THE DRIVING WHEEL OF THE CAR USING THE SPEED PLAN

2021 ◽  
Author(s):  
M.I. Romanchenko ◽  
Keyword(s):  
Angular Velocity ◽  
Power Balance ◽  
Driving Mode ◽  
Drive Wheel ◽  
Characteristic Points ◽  
Driving Wheel ◽  
Free Mode

The method of drawing up the power balance for the driving wheel of a car using the speed plan of individual points of the wheel is presented. The linear velocities of the characteristic points are determined by their components, taking into account three wheel radii – dynamic and two kinematic. The kinematic radii are represented by the rolling radius of the wheel in the free mode and the rolling radius of the wheel in the driving mode. As a result, the linear velocities are reduced to two components, depending on the kinematic radii and the angular velocity of the wheel. They allow you to determine all the components of the power balance of the drive wheel in combination with the acting longitudinal forces, reactions and moments.

The Simulation of Driving Wheel Slip Control Based on the Fuzzy Theory

2013 ◽  
Vol 347-350 ◽  
pp. 45-48
Author(s):  
Jing Tao Yue ◽  
Li Tang ◽  
Xiang He Tao
Keyword(s):  
Fuzzy Controller ◽  
Fuzzy Theory ◽  
Control Mode ◽  
Output Variable ◽  
Wheel Slip ◽  
Slip Control ◽  
Drive Wheel ◽  
Input And Output ◽  
Driving Wheel ◽  
Set Up

This paper set up the slip control mode of drive wheel base on the fuzzy theory .By the made of input and output variable of fuzzy controller and ruler ,the mode of slip control is set up ,to communicate between the MATLAB and the AMESim system, by the simulation and calculation of the control of valve output , the result of calculation tested the controller s rationality and practicability.

RESTORATION OF CAMS OF THE DRIVING WHEEL AN EXCAVATOR EKG–5A BY MULTI–LAYER ELECTRIC ARC WELDING USING FERROMAGNETIC CHARGE

2020 ◽  
Vol 2 ◽  
pp. 43-49
Author(s):  
M.А. SEREZHKIN ◽  
D.V. ANDREEVA ◽  
S.N. GLAZUNOV
Keyword(s):  
Arc Welding ◽  
Electric Arc ◽  
Layer Height ◽  
Drive Wheel ◽  
Driving Wheel ◽  
Electric Arc Welding

The article is devoted to determining the number of deposited layers by the method of electric arc welding using a ferromagnetic charge in the case of eliminating wear on the cam of the drive wheel of the EKG–5A excavator from 35KhML steel. As well as assessing the distribution of hardness and the presence of defects along the layer height during sequential cooling of the deposited rollers and in the absence of cooling before by applying a subsequent roll in multilayer surfacing.

scholarly journals АНАЛІТИЧНЕ ДОСЛІДЖЕННЯ ДИНАМІКИ ТИПОВИХ КУЛІСНИХ МЕХАНІЗМІВ ТЕХНОЛОГІЧНИХ МАШИН ЛЕГКОЇ ПРОМИСЛОВОСТІ

2018 ◽  
Vol 122 (3) ◽  
pp. 9-18
Author(s):  
В. М. Дворжак
Keyword(s):  
Differential Equation ◽  
Computer Simulation ◽  
Angular Velocity ◽  
Equation Of Motion ◽  
Analytical Investigation ◽  
Light Industry ◽  
Sewing Machine ◽  
Characteristic Points ◽  
Crank Mechanism ◽  
Angle Of Rotation

Improving methods of designing technological machines mechanisms of light industry in CAD-programs. The analytical method of vector transformation of coordinates for calculation of typical mechanisms of technological machines and a numerical method for solving differential equations are used. Mathematical models describing the functions of the position of the moving links and the characteristic points of the multi-link mechanism of the thread take-up mechanism for the sewing machine and the dynamics of its operation are obtained. Schematic modeling of the mechanism in the Mathcad program was performed. The graphs of the dependence of the angular velocity and acceleration on time and on the angle of rotation of the crank mechanism. The algorithm of numerical and analytical investigation of the dynamics of the flat six-link articulated mechanism of the thread take-up of the sewing machine is proposed on the basis of the numerical solution of the differential equation of motion of the mechanism and a computer simulation of the mechanism in the program Mathcad. Practical Value is to use the results of research in kinematic and dynamic study of the target sewing machine mechanisms.

Zonal and tesseral harmonic perturbations of an artificial satellite

1966 ◽  
Vol 25 ◽  
pp. 323-325 ◽  
Author(s):  
B. Garfinkel
Keyword(s):  
Angular Velocity ◽  
Spherical Harmonics ◽  
Artificial Satellite ◽  
Compact Form ◽  
Earth’S Rotation ◽  
Earth's Rotation ◽  
Secular Variations ◽  
Tesseral Harmonics

The paper extends the known solution of the Main Problem to include the effects of the higher spherical harmonics of the geopotential. The von Zeipel method is used to calculate the secular variations of orderJmand the long-periodic variations of ordersJm/J2andnJm,λ/ω. HereJmandJm,λare the coefficients of the zonal and the tesseral harmonics respectively, withJm,0=Jm, andωis the angular velocity of the Earth's rotation. With the aid of the theory of spherical harmonics the results are expressed in a most compact form.

The Analysis of Proprioception Alteration during First Five Months after Anterior Cruciate Ligament Reconstruction

2018 ◽  
Vol 1 (84) ◽  
Author(s):  
Vilma Jurevičienė ◽  
Albertas Skurvydas ◽  
Juozas Belickas ◽  
Giedra Bušmanienė ◽  
Dovilė Kielė ◽  
...  
Keyword(s):  
Anterior Cruciate Ligament ◽  
Angular Velocity ◽  
Knee Joint ◽  
Cruciate Ligament ◽  
Position Sense ◽  
Joint Position Sense ◽  
Joint Position ◽  
Starting Position ◽  
Angular Velocities ◽  
Anterior Cruciate

Research  background  and  hypothesis.  Proprioception  is  important  in  the  prevention  of  injuries  as  reduced proprioception  is  one  of  the  factors  contributing  to  injury  in  the  knee  joint,  particularly  the  ACL.  Therefore, proprioception appears not only important for the prevention of ACL injuries, but also for regaining full function after ACL reconstruction.Research aim. The aim of this study was to understand how proprioception is recovered four and five months after anterior cruciate ligament (ACL) reconstruction.Research methods. The study included 15 male subjects (age – 33.7 ± 2.49 years) who had undergone unilateral ACL reconstruction with a semitendinosus/gracilis (STG) graft in Kaunas Clinical Hospital. For proprioceptive assessment, joint position sense (JPS) was measured on both legs using an isokinetic dynamometer (Biodex), at knee flexion of 60° and 70°, and at different knee angular velocities of 2°/s and 10°/s. The patients were assessed preoperatively and after 4 and 5 months, postoperatively.Research results. Our study has shown that the JPS’s (joint position sense) error scores  to a controlled active movement is significantly higher in injured ACL-deficient knee than in the contralateral knee (normal knee) before surgery and after four and five months of rehabilitation.  After 4 and 5 months of rehabilitation we found significantly lower values in injured knees compared to the preoperative data. Our study has shown that in injured knee active angle reproduction errors after 4 and 5 months of rehabilitation were higher compared with the ones of the uninjured knee. Proprioceptive ability on the both legs was  independent of all differences angles for target and starting position for movement. The knee joint position sense on both legs depends upon the rate of two different angular velocities and the mean active angle reproduction errors at the test of angular velocity slow speed was the highest compared with the fast angular velocity. Discussion and conclusions. In conclusion, our study shows that there was improvement in mean JPS 4 and 5 months after ACL reconstruction, but it did not return to normal indices.Keywords: knee joint, joint position sense, angular velocity, starting position for movement.

Effect of Inner and Outer Wheels Driving Force Control on Small Electric Vehicle

2020 ◽  
Vol 17 (4) ◽  
pp. 8246-8254
Author(s):  
K. Shibazaki ◽  
H. Nozaki
Keyword(s):  
Control System ◽  
Angular Velocity ◽  
Electric Vehicle ◽  
Force Constant ◽  
Force Control ◽  
Driving Force ◽  
Vehicle Control ◽  
Steering Angle ◽  
Force Control System ◽  
The Difference

In this study, in order to improve steering stability during turning, we devised an inner and outer wheel driving force control system that is based on the steering angle and steering angular velocity, and verified its effectiveness via running tests. In the driving force control system based on steering angle, the inner wheel driving force is weakened in proportion to the steering angle during a turn, and the difference in driving force is applied to the inner and outer wheels by strengthening the outer wheel driving force. In the driving force control (based on steering angular velocity), the value obtained by multiplying the driving force constant and the steering angular velocity,  that differentiates the driver steering input during turning output as the driving force of the inner and outer wheels. By controlling the driving force of the inner and outer wheels, it reduces the maximum steering angle by 40 deg and it became possible to improve the cornering marginal performance and improve the steering stability at the J-turn. In the pylon slalom it reduces the maximum steering angle by 45 deg and it became possible to improve the responsiveness of the vehicle. Control by steering angle is effective during steady turning, while control by steering angular velocity is effective during sharp turning. The inner and outer wheel driving force control are expected to further improve steering stability.

ESTIMATION OF AERODYNAMIC FORCES AND MOMENTS DERIVATIVES WITH RESPECT TO THE ANGULAR VELOCITY COMPONENTS OF THE AIRCRAFT MODEL IN A WIDE RANGE OF ANGLES OF ATTACK

2018 ◽  
Vol 49 (1) ◽  
pp. 43-64
Author(s):  
Mikhail Alekseyevich Golovkin ◽  
Andrey Aleksandrovich Efremov ◽  
Miroslav Sergeevich Makhnev
Keyword(s):  
Angular Velocity ◽  
Aerodynamic Forces ◽  
Aircraft Model ◽  
Wide Range
Sign in / Sign up

Export Citation Format

Share Document