Method for designing performance parameters of wheel encasing type automobile carrier

Abstract

The invention discloses a method for designing performance parameters of a wheel encasing type automobile carrier. The method comprises the following steps: firstly, establishing a carrier encasing clamp and carrying a kinetic model of an automobile, deriving a complete machine mathematic model of a carrier system, determining the rigidity, damping and mass matrix of the carrier model, and takingthe rigidity, damping and mass matrix of the carrier model as design space of performance of the carrier; and secondly, determining the constraint condition of the design of the carrier, constructinga carrier performance parameter agent model through repeated Latin hypercube experiments and numerical calculation and a minimum density-potential optimal sampling strategy, and solving the model by using an NSGA-II algorithm. The problems that dynamic factors are not considered during design of the carrier, and parameter design of the system is randomly determined according to empirical data aresolved, the system parameters and performance model of the carrier are constructed, stability of the design of the carrier is improved, and the design period of the carrier is shortened.

Description

technical field

[0001] The invention relates to the field of mechanical engineering and the field of computer application technology, and more specifically, to a method for designing performance parameters of a wheel-holding vehicle carrier. Background technique

[0002] With the acceleration of my country's economic development and the improvement of urban modernization, the number of cars continues to grow at a high speed, and the difficulty of parking in large and medium cities has become a problem that plagues urban traffic. The three-dimensional parking garage is an effective solution to the problem of "difficult parking" in the city. The three-dimensional parking garage can have the advantages of high access efficiency, fast shunting speed, high degree of automation, and high reliability, and the key component to achieve this effect is the car handler.

[0003] Generally, there is a certain joint gap between the parking space and the track of the lifting platform of t...

Examples

Embodiment

[0146] The initial design parameters of the system for a carrier are shown in Table 1:

[0147] Table 1

[0148]

[0149] The mass, stiffness, and damping matrices brought into the dynamic model of the carrier system are obtained as follows:

[0150]

[0151]

[0152]

[0153] Run the Newmark numerical integral calculation program to obtain the dynamic load coefficient of the load on the arm of the carrier as follows: Figure 7

[0154] In step 3, a certain RBF proxy model is as follows: Figure 8 , where the genetic algorithm solution parameters are listed in Table 2 below:

[0155] Table 2

[0156]

[0157] get the optimized solution as Figure 9 .

[0158] Through empirical data, it can be obtained that the value of α is 0.65, and the value of β is 0.35. Using this standard method to calculate the formula to obtain the comprehensive evaluation degree distribution of the optimal solution is as follows: Figure 10 .

[0159] when k i =k 5 =0.1510 is ...

technical field

[0001] The invention relates to the field of mechanical engineering and the field of computer application technology, and more specifically, to a method for designing performance parameters of a wheel-holding vehicle carrier. Background technique

[0002] With the acceleration of my country's economic development and the improvement of urban modernization, the number of cars continues to grow at a high speed, and the difficulty of parking in large and medium cities has become a problem that plagues urban traffic. The three-dimensional parking garage is an effective solution to the problem of "difficult parking" in the city. The three-dimensional parking garage can have the advantages of high access efficiency, fast shunting speed, high degree of automation, and high reliability, and the key component to achieve this effect is the car handler.

[0003] Generally, there is a certain joint gap between the parking space and the track of the lifting platform of t...

Examples

Embodiment

[0146] The initial design parameters of the system for a carrier are shown in Table 1:

[0147] Table 1

[0148]

[0149] The mass, stiffness, and damping matrices brought into the dynamic model of the carrier system are obtained as follows:

[0150]

[0151]

[0152]

[0153] Run the Newmark numerical integral calculation program to obtain the dynamic load coefficient of the load on the arm of the carrier as follows: Figure 7

[0154] In step 3, a certain RBF proxy model is as follows: Figure 8 , where the genetic algorithm solution parameters are listed in Table 2 below:

[0155] Table 2

[0156]

[0157] get the optimized solution as Figure 9 .

[0158] Through empirical data, it can be obtained that the value of α is 0.65, and the value of β is 0.35. Using this standard method to calculate the formula to obtain the comprehensive evaluation degree distribution of the optimal solution is as follows: Figure 10 .

[0159] when k i =k 5 =0.1510 is ...

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