Ride quality and noise in high speed elevators

Pierucci, Mauro; Frederick, Michael A.

doi:10.1121/1.2933515

Cited by 3 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By comparing the simulation, experimental, and theoretical calculation results, the correctness of the numerical simulation method was verified. Pierucci et al [5] studied the streamline flow field inside the elevator shaft, analyzed the pressure disturbances generated by the elevator car and its attachments (such as frame, guide rail, traction rope, etc. ), and methods for reducing the pressure disturbances.…”

Section: Introductionmentioning

confidence: 99%

Multi-objective optimization design of high-speed elevator car based on aerodynamic characteristic surrogate model

Su,

Li,

Jiang

et al. 2024

Fourth International Conference on Mechanical Engineering, Intelligent Manufacturing, and Automation Technology (MEMAT 2023)

View full text Add to dashboard Cite

With the increase of elevator operating speed, it is greatly affected by air disturbance, which leads to the increase of elevator cost and energy consumption, and has a huge impact on the safety, reliability and comfort of elevator operation. To improve the aerodynamic characteristics of the cabin flow field, this paper parameterizes the flow guide hoods with a structure similar to an ellipse, selecting eight design parameters. Taking the aerodynamic drag coefficient and the yawing moment coefficient as the optimization objectives, four surrogate models were constructed by using the optimal Latin hypercube design sample points and the prediction accuracy was compared. Finally, the EBF surrogate model with higher fitting accuracy was selected, and combined with the NSGA-II optimization algorithm to carry out multi-objective optimization of the flow guide hood, obtaining a series of Pareto solutions, and finally comparing and analyzing the aerodynamic performance of the flow guide hood before and after optimization. Finally, on the basis of the optimized flow guide hood, the aerodynamic characteristics of the cabin under actual operating conditions were analyzed. The results show that the installation of the flow guide hood can reduce the drag coefficient of the cabin; within a certain range, increasing the total height of the flow guide hood, the vertex offset and the inertia of the flow guide hood in the X direction can improve the aerodynamic performance of the ultra-high speed elevator system. The running scenarios such as start acceleration, smooth running, deceleration and stop will affect the aerodynamic performance of the cabin, and this study provides a reference for the optimization design of the flow guide hood and the operating conditions of the elevator.

show abstract

Section: Introductionmentioning

confidence: 99%

Multi-objective optimization design of high-speed elevator car based on aerodynamic characteristic surrogate model

Su,

Li,

Jiang

et al. 2024

Fourth International Conference on Mechanical Engineering, Intelligent Manufacturing, and Automation Technology (MEMAT 2023)

View full text Add to dashboard Cite

show abstract

“…Some other important applications that require ride quality characterization include autonomous vehicle control [5], highspeed elevator operation [6], high-speed rail or hyperloop operation [7], passenger transit driver training [8], vibration impacts on ambulance patients [9], construction equipment safety [10], vibration impacts on sensitive cargo [11], wheelchair safety [12], pedestrian walkway safety [13], classification of car driving safety [14], and insurance pricing based on driving behavior [15].…”

Section: Introductionmentioning

confidence: 99%

Characterizing Ride Quality With a Composite Roughness Index

Bridgelall

2022

IEEE Trans. Intell. Transport. Syst.

View full text Add to dashboard Cite

There are many important applications that require ride quality characterization. However, the only international standard that specifies a roughness index is not suitable for applications beyond assessing the ride quality of paved roads. Other potential applications include automated ride quality characterization of gravel roads, bike or wheelchair paths, railways, rivers, airways, hyperloops, and elevator channels. This work proposes a composite index that characterizes roughness from multidimensional movements along any path. Statistical tests demonstrate two important properties-that the index is consistent based on an ever-decreasing margin-of-error of the mean, and distinguishable among different paths. A low-cost sensor package of accelerometers, gyroscopes, and a speedometer produced the data for spatio-temporal transformation. The experiments conducted on buses revealed that both the consistency and distinguishability of the index improves with the number of measurements. The approach is best suited for applications that can use in-situ sensors or crowdsensing to automate ride quality characterization.

show abstract

Gas–solid coupling lateral vibration characteristics of high-speed elevator based on blockage ratio

Zhang

Liu

et al. 2022

J Braz. Soc. Mech. Sci. Eng.

View full text Add to dashboard Cite

Ride quality and noise in high speed elevators

Cited by 3 publications

References 0 publications

Multi-objective optimization design of high-speed elevator car based on aerodynamic characteristic surrogate model

Multi-objective optimization design of high-speed elevator car based on aerodynamic characteristic surrogate model

Characterizing Ride Quality With a Composite Roughness Index

Gas–solid coupling lateral vibration characteristics of high-speed elevator based on blockage ratio

Contact Info

Product

Resources

About