A multi-objective optimization design approach of large mining planetary gear reducer

Xin, Wen; Zhang, Yanyan; Fu, Yang; Yang, Wei; Zheng, Huanping

doi:10.1038/s41598-023-45745-5

Cited by 4 publications

(3 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Constants related to the battery were modeled using data applied in real vehicles as shown in Table 8. Equations ( 6) and (7) present the simple modeling of the battery to calculate voltage and SOC. The charging and discharging currents of the battery were calculated by multiplying the power required by the motor by the efficiency of the motor.…”

Section: Modeling Of Longitudinal Vehicle Dynamicsmentioning

confidence: 99%

See 1 more Smart Citation

Development of Shift Map for Electric Commercial Vehicle and Comparison Verification of Pneumatic 4-Speed AMT and 4-Speed Transmission with Synchronizer in Simulation

Kim,

Lee,

Jin

et al. 2024

Energies

View full text Add to dashboard Cite

As the automotive industry transitions from internal combustion engine vehicles to the era of electric cars, extensive research is being conducted in the field of electric vehicles. While a significant portion of this research focuses on the electrification of passenger cars, commercial vehicles have experienced relatively modest changes towards electric propulsion. Particularly, challenges related to power and efficiency have prompted a concentrated effort in addressing these issues. However, improvements in the efficiency of motors and inverters are reaching their limits, necessitating the development of multi-speed transmissions for electric commercial vehicles to enhance overall system efficiency. In this paper, the development of a 4-speed transmission with a synchronizer designed for electric commercial vehicles is presented as part of a project. A transmission shift map was developed, and verification of increased power and efficiency was conducted through a comparison with the existing product (a pneumatic 4-speed internal combustion engine transmission) installed in the target commercial vehicle. The study utilized vehicle dynamics, component modeling, and simulation environments to assess the improvements in performance.

show abstract

Section: Modeling Of Longitudinal Vehicle Dynamicsmentioning

confidence: 99%

“…In line with this trend, extensive research and development have been conducted on motors, inverters, reducers, etc. resulting in significant improvements in power and efficiency [7,8]. Particularly, there is a considerable focus on efficiency studies related to motors and inverters [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Development of Shift Map for Electric Commercial Vehicle and Comparison Verification of Pneumatic 4-Speed AMT and 4-Speed Transmission with Synchronizer in Simulation

Kim,

Lee,

Jin

et al. 2024

Energies

View full text Add to dashboard Cite

show abstract

“…They found that the bearing alignments could be effective on the system vibrations due to the bearing constraint reinforcement. Xin et al [23] proposed a dynamic model of a PGS for a mining reducer. They optimized the gear parameters to enhance the acoustic vibration performances of the system.…”

Section: Kinematic Modeling Of the Drpgsmentioning

confidence: 99%

Vibration Analysis of the Double Row Planetary Gear System for an Electromechanical Energy Conversion System

Li,

Xu,

Liu

et al. 2024

Lubricants

View full text Add to dashboard Cite

Electromechanical energy conversion systems (EECSs) are widely used in vehicles to combine the double-row planetary gear system (DRPGS) with high transmission efficiency and high-performance motors. The integrated structure of the ring gear and motor rotor have put forward higher demands for the vibration performance of the DRPGS. This paper establishes a multibody dynamic model of the DRPGS for an EECS. Based on the kinetic relationship between the gear pairs and bearing components, the dynamic equations of the DRPGS are derived. The DRPGS model is simulated under different operating conditions. The results are compared to reveal the relationships between the system vibration and the operating speed and load torque. The typical conditions are selected to study the effectiveness of the structural parameters in reducing the DRPGS vibrations. The structural parameters, including the bearing clearance, the ball numbers, the gear tooth modification amount, and length, are comprehensively discussed. Several suggestions for the low-vibration design of the DRPGS for the EECS are provided.

show abstract

Dynamic characteristics analysis and optimization design of two-stage helix planetary reducer for robots

Lin,

Huang,

Chen

et al. 2024

Preprint

View full text Add to dashboard Cite

The dynamic characteristics of high-precision planetary reducers in terms of vibration response and dynamic transmission error have a significant impact on positioning accuracy and service life. However, the dynamics of high-precision two-stage helical planetary reducers has not been studied extensively enough and needs to be studied in depth. In order to make up for this defect, considering the time-varying meshing stiffness of gears and transmission errors, a translation-torsion coupled dynamics model of a two-stage helical planetary gear drive is established based on the Lagrange equations by using the centralized parameter method for analyzing the dynamic characteristics of the reducer. The differential equations of the system were derived by analyzing the relative displacement relationship between the components. On this basis, a finite element model of a certain type of high-precision reducer was established, and the effects of factors such as rotate speed and load on the dynamic behaviour and transmission accuracy were investigated through simulation and experimental comparison to quantify or characterize their effects.Based on the combined modification method of helix modification with drum shape, the optimized design of this type of reducer is carried out, and the dynamic characteristics of the reducer before and after modification are compared and analyzed. The results show that the adopted modification optimization method is effective in reducing the vibration amplitude and transmission error amplitude of the reducer.The peak-to-peak value of transmission error of the reducer is reduced by 19.87%; the peak value of vibration acceleration is reduced by 14.29%; and the RMS value is reduced by 21.05% under the input speed of 500 r/min and the load of 50 N·m operating conditions. The research results can provide a theoretical basis for the study of dynamic characteristics, fault diagnosis, optimization of meshing parameters and structural optimization of planetary reducers.

show abstract

A multi-objective optimization design approach of large mining planetary gear reducer

Cited by 4 publications

References 24 publications

Development of Shift Map for Electric Commercial Vehicle and Comparison Verification of Pneumatic 4-Speed AMT and 4-Speed Transmission with Synchronizer in Simulation

Development of Shift Map for Electric Commercial Vehicle and Comparison Verification of Pneumatic 4-Speed AMT and 4-Speed Transmission with Synchronizer in Simulation

Vibration Analysis of the Double Row Planetary Gear System for an Electromechanical Energy Conversion System

Dynamic characteristics analysis and optimization design of two-stage helix planetary reducer for robots

Contact Info

Product

Resources

About