Intelligent control of active shock absorber for high-speed elevator car

Zhang, Qing; Yang, Zhe; Wang, Chen; Yang, Yuhu; Zhang, Ruijun

doi:10.1177/0954406218810045

Cited by 36 publications

(26 citation statements)

References 19 publications

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“…For the KLK2 high-speed elevator, the design parameters were substituted to obtain the optimization model of horizontal vibration reduction, as shown in equation (23). e expression of the objective function f(x) is unknown, and the expressions of g(x) and h(x) are known.…”

Section: Optimization Boundary Restrictionsmentioning

confidence: 99%

“…Step 3: according to equations (23) and (26), an approximate response surface model of the optimization objective function of horizontal vibration reduction d 1 � f(x) is built.…”

Section: (2) Steps For Response Surface Modeling Of the Optimization mentioning

confidence: 99%

“…Knezevic et al [22] proposed the synergistic solution based on the jerk control and upgrade of the speed controller with a band-stop filter to restore lost ride comfort and speed control caused by vibration. Zhang et al [23] designed the active car shock absorber with a linear motor to effectively suppress high-speed traction elevator vibration. Nakano et al [24] presented a new control device to suppress horizontal vibration in the elevator cabin.…”

Section: Introductionmentioning

confidence: 99%

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A Vibration-Related Design Parameter Optimization Method for High-Speed Elevator Horizontal Vibration Reduction

Qiu

Wang

Zhang

et al. 2020

Shock and Vibration

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High-speed elevator horizontal vibration (HsEHV) is a problem that seriously affects ride comfort. To solve this problem, a design parameter optimization method for HsEHV reduction was studied. A dynamic equation of HsEHV was established, and its response value was calculated using a precise integration method. The influence of the design parameters on horizontal vibration was also analyzed. An optimization model of the design parameters for HsEHV reduction was constructed, and the response surface model of objective function (the peak-to-peak value of horizontal vibration acceleration) was constructed using Latin hypercube sampling. We adopted a multiobjective genetic algorithm to optimize the design parameters for horizontal vibration reduction and used the min-max standardization method to select an optimal solution set. Finally, a KLK2 high-speed elevator made by Canny Elevator Co., Ltd., was utilized as an example to analyze the influencing factors of HsEHV, optimize the design parameters to reduce horizontal vibration, and verify the optimized results using numerical calculation and prototype testing.

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Section: Optimization Boundary Restrictionsmentioning

confidence: 99%

“…Step 3: according to equations (23) and (26), an approximate response surface model of the optimization objective function of horizontal vibration reduction d 1 � f(x) is built.…”

Section: (2) Steps For Response Surface Modeling Of the Optimization mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Vibration-Related Design Parameter Optimization Method for High-Speed Elevator Horizontal Vibration Reduction

Qiu

Wang

Zhang

et al. 2020

Shock and Vibration

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“…Similarly, the second and third modal vectors of the undamped system are u (2) and u (3) , respectively. e modal matrix of the system is obtained as…”

Section: Free Vibration Solution Of the Undamped Systemmentioning

confidence: 99%

“…With the development of modernization, people's life rhythm is faster and faster, the use range of elevator is gradually expanded, and the use frequency is also higher and higher [2]. Subsequently, the requirements of elevator safety, comfort, and running speed are constantly improved [3,4]. How to balance the elevator performance among these three requirements is a problem that elevator workers all over the world have been thinking about.…”

Section: Introductionmentioning

confidence: 99%

Study on Theoretical Model and Test Method of Vertical Vibration of Elevator Traction System

Peng

Jiang

Yuan

et al. 2020

Mathematical Problems in Engineering

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In order to study the dynamic characteristics of the elevator, the response characteristics of the elevator under normal operation and emergency braking conditions are analyzed. In this paper, the centralized mass discretization model is used to study the vibration characteristics of the elevator traction system under the external excitation. Firstly, the vibration equation of the elevator multi-degrees-of-freedom (abbreviated as DOF) system is established. en, the vibration characteristics of the three DOF system are analyzed, and the natural frequencies and modes are obtained. e free vibration equation and forced vibration equation are obtained, and the theoretical solutions are obtained. Finally, the test method proposed in this paper is used to test the normal operation and emergency braking of the elevator. e test results show that, under normal operation conditions, the measured speed and distance errors are not more than 4.2%, the up running distance measured by the elevator is larger than the actual value, while the down running distance is smaller than the actual value; under emergency braking condition, because the steel wire rope can only bear the pulling force, the peak acceleration fluctuation in the up emergency braking process is large, while the down emergency braking acceleration fluctuation is small. erefore, the elevator vibration analysis model and the vibration test method proposed in this paper can be used for the analysis of elevator dynamic performance, which has great reference value for the safety performance research of the elevator traction system.

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Research on anti‐saturation horizontal vibration model and neural network adaptive integral terminal sliding mode control strategy for high‐speed elevator car system

Zhao,

Zhang,

et al. 2024

Intl J Robust & Nonlinear

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A neural network adaptive integral terminal sliding mode control method with input saturation is proposed for the horizontal vibration problem of high‐speed elevator car systems caused by uncertainties such as guideway excitation and shaft piston wind change. First, considering the input saturation problem existing in the elevator control actuator, a class of smooth functions is introduced to approximate the nonlinearity of switching saturation, and an eight‐degree‐of‐freedom asymmetric anti‐saturation nonlinear system model of the high‐speed elevator car is established; second, in order to solve the singularity problem existing in the terminal sliding‐mode control, a nonlinear term is introduced into the sliding‐mode design, and a neural network is utilized for the fitting of the complex unknown function, and the design of the an adaptive integral terminal sliding mode controller (AITSMC), which enables the state variables of the system to achieve finite time convergence and proves the stability of the system by using Lyapunov theory; finally, under the action of two typical guide excitations, the proposed controller is compared with the passive control and adaptive control (AC), and the results show that, after adopting the proposed control method, the vibration acceleration eigenvalue is reduced by more than 60%, which effectively suppresses the horizontal vibration of the car system and verifies the effectiveness of the proposed controller.

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Intelligent control of active shock absorber for high-speed elevator car

Cited by 36 publications

References 19 publications

A Vibration-Related Design Parameter Optimization Method for High-Speed Elevator Horizontal Vibration Reduction

A Vibration-Related Design Parameter Optimization Method for High-Speed Elevator Horizontal Vibration Reduction

Study on Theoretical Model and Test Method of Vertical Vibration of Elevator Traction System

Research on anti‐saturation horizontal vibration model and neural network adaptive integral terminal sliding mode control strategy for high‐speed elevator car system

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