First-principles study of the NiMgn (n=1—12) clusters

姚建刚,; 王献伟,; 王渊旭,; 罗有华,

doi:10.7498/aps.57.4166

Cited by 11 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Wang Yilin et al [4] designed and optimized the enhanced tangent speed constraint model, and then based on the TORCS microsimulation platform, the steering control effect of the method and the traditional tangent method was compared and verified, which improved the safety of automobile autonomous driving. Piao Changhao [5], Wang Jian [6], Demirli [7]respectively designed path tracking controllers based on PID, LE-SO, adaptive fuzzy control. Lan Nan et al [8] studied and interpreted the European standard ECE R79 autonomous driving steering, analyzed the functions and test process of R79 and classified them, then concluded that it has strong guiding significance for the development of intelligent driving in China.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Model Based Research on Intelligent Vehicle Steering and Obstacle Avoidance

Huang¹

2023

HSET

View full text Add to dashboard Cite

In order to improve road safety, promote the development of autonomous driving, and realize the stability of unmanned vehicles during steering and obstacle avoidance, this paper establishes a lateral dynamic model and a cyclotron curve model based on the 3-degree-freedom vehicle dynamics model. Taking no collision between cars and timely obstacle avoidance as the optimization goal, this paper discretizes the model, a prediction model is established, a soft constraint solver is designed, and a relaxation factor is added to the performance index function. Based on the model prediction and control principle, the obstacle avoidance trajectory planning and tracking of unmanned vehicles is integrated and controlled, and the solution is converted into a quadratic programming problem according to the constraints and rolling optimization characteristics. Finally Matlab/Prescan joint simulation is used to verify the steering and obstacle avoidance quality of the model. The results show that the model has excellent safety, stability and comfort in non-highspeed situations.

show abstract

Section: Introductionmentioning

confidence: 99%

Dynamic Model Based Research on Intelligent Vehicle Steering and Obstacle Avoidance

Huang¹

2023

HSET

View full text Add to dashboard Cite

show abstract

“…Nickel and its mixed clusters have attracted much attention. [1][2][3][4][5][6][7][8][9][10][11][12] Sun et al [13] have studied the equilibrium geometries and the bonding energies of Ni n (n = 2-20) clusters by using an empirical many-body potential and a genetic algorithm (GA). Song et al [14] investigated the magnetic property and electronic properties of the Ni n (n ≤ 30) neutral and ionic clusters by using density functional theory (DFT).…”

Section: Introductionmentioning

confidence: 99%

Density functional theory study of Mg₂Ni_n(n= 1−8) clusters

Zhang¹,

Li²,

Sheng³

2014

Chinese Phys. B

View full text Add to dashboard Cite

The density functional theory B3PW91 with LANL2DZ basis sets has been used to study the possible geometries of Mg 2 Ni n (n = 1-8) clusters. For the lowest energy structures of the clusters, stabilities, electronic properties, and natural bond orbital (NBO) are calculated and discussed. The results show that the doped Mg atoms reduce the stabilities of pure Ni clusters. The Mg 2 Ni 2 , Mg 2 Ni 4 , and Mg 2 Ni 6 clusters are more stable than neighboring clusters. The system appears magic number characteristics. In addition, the hybridization phenomenon occurs, owing to the interaction of Mg and Ni. The result of charge transfer is that Ni atom is negative and the Mg atom is positive. We also conclude that the 3p and 4d orbitals of the Ni atom have an effect on the stabilities of the clusters.

show abstract

The cage‐like structure enhanced magnetic moment in ScK_n (n = 2–12) clusters: A first‐principles jointed particle swarm optimization investigation

Aireti

Jiang

Cao

et al. 2021

Int J of Quantum Chemistry

View full text Add to dashboard Cite

Using the first principles method combined with the CALYPSO structure prediction method, the authors have investigated the geometries of the lowest-energy and its isomers of ScK n (n = 2-12) clusters, and the electronic configurations and magnetic moments of each clusters. With the increasing size of ScK n clusters, the transition-metal Sc atom gradually slides from the corner (for n ≤ 8) to core of cage-like structures (for n > 9). After detailed check out the binding energy per atom E b , second-order difference of energy ΔE, and fragmentation energies E f , the authors found out that the cage-like ScK n (n = 9-12) clusters are more stable than the small-sized ScK n (n = 2-8) clusters, and the ScK 8 , ScK 10 , and ScK 12 are more stable than their neighbors. The enhanced magnetic moments are found in ScK n (n = 9-12) clusters whose total magnetic moments are 2, 3, 4, and 5 μ B , respectively. The origination of the enhanced magnetic moments is further investigated using the Mulliken population, the molecular orbitals and the chemical bonding analysis. The results show that the large magnetic moments have relation with the interaction between Sc and K atoms. The valence shell of superatom ScK 12 cluster can be described as 1S 2 1P 6 1D 5 2S 2 , which made its magnetic moments as large as 5 μ B .

show abstract

First-principles study of the NiMgn (n=1—12) clusters

Cited by 11 publications

References 0 publications

Dynamic Model Based Research on Intelligent Vehicle Steering and Obstacle Avoidance

Dynamic Model Based Research on Intelligent Vehicle Steering and Obstacle Avoidance

Density functional theory study of Mg₂Ni_n(n= 1−8) clusters

The cage‐like structure enhanced magnetic moment in ScK_n (n = 2–12) clusters: A first‐principles jointed particle swarm optimization investigation

Contact Info

Product

Resources

About

First-principles study of the NiMgn (n=1—12) clusters

Cited by 11 publications

References 0 publications

Dynamic Model Based Research on Intelligent Vehicle Steering and Obstacle Avoidance

Dynamic Model Based Research on Intelligent Vehicle Steering and Obstacle Avoidance

Density functional theory study of Mg2Nin(n= 1−8) clusters

The cage‐like structure enhanced magnetic moment in ScKn (n = 2–12) clusters: A first‐principles jointed particle swarm optimization investigation

Contact Info

Product

Resources

About

Density functional theory study of Mg₂Ni_n(n= 1−8) clusters

The cage‐like structure enhanced magnetic moment in ScK_n (n = 2–12) clusters: A first‐principles jointed particle swarm optimization investigation