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Multi-scale approximate explicit model predictive control method for mechanical vibration of high-speed elevator

A technology of model predictive control and mechanical vibration, applied in the directions of adaptive control, general control system, control/regulation system, etc., can solve problems such as increasing difficulty in dealing with problems and increasing complexity, so as to facilitate online search, overcome defects, Find convenient effects online

Active Publication Date: 2019-03-29
ZHEJIANG UNIV OF TECH
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Problems solved by technology

However, when the number of inputs increases or the control time domain becomes longer, the complexity will increase exponentially, making it more difficult to deal with the problem.

Method used

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  • Multi-scale approximate explicit model predictive control method for mechanical vibration of high-speed elevator
  • Multi-scale approximate explicit model predictive control method for mechanical vibration of high-speed elevator
  • Multi-scale approximate explicit model predictive control method for mechanical vibration of high-speed elevator

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Embodiment Construction

[0087] The present invention will be further described below in conjunction with accompanying drawing:

[0088] The multi-scale approximate explicit model predictive control method of high-speed elevator mechanical vibration of the present invention, such as figure 1 Shown is the system dynamics model diagram of the elevator system, and specifically includes the following steps:

[0089] Step 1) model the elevator mechanical vibration system to obtain the performance index function of the elevator mechanical vibration system;

[0090] The space state equation of the elevator mechanical vibration system is:

[0091]

[0092] According to the second type of Lagrangian equation, the differential equations of vibration motion of the system can be derived, and the dynamic equation of the vibration of the elevator mechanical system established is:

[0093]

[0094] M, K, and C are the mass, stiffness, and damping matrices of the system, respectively. F is the excitation col...

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Abstract

The invention provides a multi-scale approximate explicit model predictive control method for the mechanical vibration of a high-speed elevator. The method comprises the steps that 1) an elevator mechanical vibration system is modeled to acquire the performance index function of the elevator mechanical vibration system, and the function is an object to be approximated; 2) a piecewise linear interpolation method is used to initially acquire an approximate control law; 3) adaptive hierarchical function approximation is carried out to transform the form of the approximate control law; 4) a centroid function is introduced to acquire the approximate control law based on the centroid function by using centroid interpolation; and 5) multi-scale approximate explicit model predictive control of thehigh-speed elevator mechanical vibration system is carried out.

Description

technical field [0001] The invention relates to an optimal control method for the mechanical vibration of a high-speed elevator. Background technique [0002] Elevator, as a manned vertical transportation tool, plays a very important role in people's life and work. The degree of civilization and development of a country and a region is directly proportional to the use of elevators and the grade of elevators used. According to the survey, the number and grade of elevators used in developed coastal cities such as Shanghai and Shenzhen are among the top in my country. It is hard to imagine that in a modern metropolis full of high-rise buildings, the lack of high-speed and high-grade elevators brings a lot of inconvenience to people. In recent years, my country's elevator industry has also experienced great development. At present, there are more than 100 elevator manufacturers in the country. With the emergence of high-rise and super high-rise buildings, elevators continue ...

Claims

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Application Information

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IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 张聚赵恺伦周俊田峥
Owner ZHEJIANG UNIV OF TECH
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