Performance parameter-based method for measuring and calculating target price of airborne equipment of airplane

Abstract

The invention belongs to the technical field of equipment target price measurement and calculation, and discloses a performance parameter-based aircraft airborne equipment target price measurement and calculation method, which comprises the following steps of: collecting price information and related performance indexes of similar equipment in a plurality of industries to form a price measurement and calculation basic database; m key performance indexes with typical representative meanings are determined, and a key performance index matrix U is formed; selecting y devices from the price calculation basic database as calculation references, and extracting corresponding m key index data and price data to jointly form a reference device data matrix H; extracting A, B, Q and R columns of the U matrix to form a column vector with the row number of m, and calculating a comprehensive performance vector S of the reference equipment and the target equipment; calculating a price coefficient vector P of the reference equipment according to the price extreme values Pmax and Pmin of the similar equipment in the price measurement and calculation basic database; calculating to obtain a cost performance parameter G of the to-be-measured equipment; and the target price Z of the to-be-measured equipment is obtained through back calculation.

Description

Technical Field

[0001] This invention belongs to the field of equipment target price calculation technology, and in particular relates to a method for calculating the target price of aircraft airborne equipment based on performance parameters. Background Technology

[0002] With the rapid development of the aviation industry, the demand for research, development and procurement of various types of aircraft is increasing day by day. Airborne equipment, as an important part of aircraft, not only needs to focus on its performance and quality, but the target price of airborne equipment directly determines the total life cycle cost of the aircraft and is one of the core factors.

[0003] Currently, the target price for aircraft avionics equipment is typically calculated using the following methods: First, the cost decomposition method, which is based on the production cost provided by the supplier plus a certain profit margin. However, this method relies entirely on the data provided by the supplier, which may lead to information asymmetry or inflated data, making it difficult to reflect the true cost and easily resulting in inflated prices. Second, the market comparison method, which mainly refers to the market prices of similar equipment with higher maturity and introduces a technical condition correction coefficient. However, due to the lack of standards for technical condition adjustments, it relies heavily on expert scoring, which can easily lead to price distortion. Third, the activity-based costing method, which mainly identifies key operational processes and breaks down the production, transportation, and installation of equipment according to key nodes, calculating the cost of each link. This method requires deep cooperation from the supplier, repeated iterations, high implementation costs, and a long calculation cycle.

[0004] Due to the concentration of suppliers of aircraft avionics equipment and the complexity of the pricing mechanism, the current procurement process for aircraft avionics equipment suffers from problems such as opaque target prices and difficulties in cost control. The current methods for calculating target prices for aircraft avionics equipment are still significantly inadequate, and there is an urgent need to establish a scientific and reasonable method for calculating target prices. Summary of the Invention

[0005] The purpose of this invention is to provide a method for calculating the target price of aircraft avionics equipment based on performance parameters. This method comprehensively considers the technical characteristics and market features of aircraft avionics equipment and, through multi-dimensional analysis and model building, scientifically and rationally calculates the target price of aircraft avionics equipment.

[0006] The technical solution of this invention is: A method for calculating the target price of equipment based on performance parameters, comprising the following steps: Step 1: Based on the function, composition, and performance parameters of the equipment for which the target price is to be calculated, collect price information and relevant performance indicators of similar equipment in multiple industries to form a basic database for price calculation; Step 2: Based on the functional characteristics of the equipment for which the target price is to be calculated, determine m key performance indicators with typical representative meanings, and determine their extreme values, weights and indicator types based on the content of the price calculation basic database to form a key performance indicator matrix U; Step 3: Based on the function, composition and key performance indicators of the equipment to be measured at the target price, select y equipment from the price measurement database as a calculation reference, extract the corresponding m key indicator data and price data, and combine them with the indicator data of the equipment to be measured to form a reference equipment data matrix H; Step 4: Extract columns A, B, Q, and R from the U matrix to form a column vector with m rows, and calculate the combined performance vector S of the reference device and the target device using a normalized method; Step 5: Calculate the price coefficient vector P of the reference equipment based on the extreme values ​​Pmax and Pmin of similar equipment prices in the price calculation database; Step 6: Calculate the cost-performance parameter G of the equipment to be tested using the price coefficient vector P and the comprehensive performance vector S; Step 7: Calculate the target price Z of the equipment to be measured.

[0007] Preferably, the price calculation database mentioned in step 1) should include the equipment name, equipment price, price year, and various technical specifications of similar equipment.

[0008] Preferably, in step 2), the form of the m-th row vector Um of the key performance index matrix U is as shown in formula (1): (1) In the formula: N is the indicator name, A is the maximum value of the indicator in the price calculation database, B is the minimum value of the indicator in the price calculation database, Q is the weight of the indicator (the sum of the weights Q of m indicators is 1), and R is the indicator type (R = 0 means the smaller the indicator is, the better, R = 1 means the larger the indicator is, the better).

[0009] Preferably, in step 3), the form of the y-th row vector Hy of the reference device data matrix H is as shown in formula (2): (2) In the formula: x1~xm are the m key performance indicators of the reference equipment, P is the price of the reference equipment, and y is greater than 10.

[0010] Preferably, in step 4), the method for calculating the comprehensive performance vector S of the reference device and the device to be measured using a normalized approach is shown in formula (3): (3) In the formula: A, B, Q, and R are all column vectors with m rows extracted from the key performance index matrix U. The subscript i represents the reference device number, and the subscript j represents different key performance indicators.

[0011] Preferably, the calculation method for the price coefficient vector P of the reference equipment in step 5) is as shown in formula (4): (4) Where Pmax and Pmin are the maximum and minimum prices of similar equipment in the price calculation database, respectively, and the subscript i represents the reference equipment number.

[0012] Preferably, the calculation method for the cost-effectiveness parameter G of the equipment to be measured in step 6) is as shown in formula (5): (5) Where y represents the number of reference devices, and the subscript i represents the reference device serial number.

[0013] Preferably, the calculation method for the target price Z of the equipment to be measured in step 7) is as shown in formula (6): (6).

[0014] Where y+1 represents the serial number of the device to be measured.

[0015] This method for calculating the target price of airborne equipment comprehensively considers the technical characteristics and market features of the equipment, establishing a mathematical model of performance parameters and prices to calculate the target price of aircraft airborne equipment. Compared with current price calculation methods, this invention's method references market prices of similar equipment, considers performance indicators, does not rely on supplier data, does not require repeated iterations, and is characterized by its scientific rationality, high accuracy, fast calculation speed, and short calculation cycle. Attached Figure Description

[0016] Figure 1 This is a flowchart illustrating the target price calculation process for aircraft avionics equipment using this method. Detailed Implementation

[0017] The present application will be further described in detail below with reference to the accompanying drawings of the embodiments.

[0018] This invention proposes a method for calculating the target price of equipment based on performance parameters, such as... Figure 1 As shown, the specific steps include: Step 1: Based on the function, composition, and performance parameters of the equipment for which the target price is to be calculated, collect price information and relevant performance indicators of similar equipment in multiple industries to form a basic database for price calculation; Step 2: Based on the functional characteristics of the equipment for which the target price is to be calculated, determine m key performance indicators with typical representative meanings, and determine their extreme values, weights and indicator types based on the content of the price calculation basic database to form a key performance indicator matrix U; Step 3: Based on the function, composition and key performance indicators of the equipment to be measured at the target price, select y equipment from the price measurement database as a calculation reference, extract the corresponding m key indicator data and price data, and combine them with the indicator data of the equipment to be measured to form a reference equipment data matrix H; Step 4: Extract columns A, B, Q, and R from the U matrix to form a column vector with m rows, and calculate the combined performance vector S of the reference device and the target device using a normalized method; Step 5: Calculate the price coefficient vector P of the reference equipment based on the extreme values ​​Pmax and Pmin of similar equipment prices in the price calculation database; Step 6: Calculate the cost-performance parameter G of the equipment to be tested using the price coefficient vector P and the comprehensive performance vector S; Step 7: Calculate the target price Z of the equipment to be measured.

[0019] The price calculation database mentioned in step 1) should include the equipment name, equipment price, price year, and various technical specifications of similar equipment.

[0020] In step 2), the form of the m-th row vector Um of the key performance index matrix U is shown in formula (1): (1) In the formula: N is the indicator name, A is the maximum value of the indicator in the price calculation database, B is the minimum value of the indicator in the price calculation database, Q is the weight of the indicator (the sum of the weights Q of m indicators is 1), and R is the indicator type (R = 0 means the smaller the indicator is, the better, R = 1 means the larger the indicator is, the better).

[0021] In step 3), the form of the y-th row vector Hy of the reference device data matrix H is shown in formula (2): (2) In the formula: x1~xm are the m key performance indicators of the reference equipment, P is the price of the reference equipment, and y is greater than 10.

[0022] In step 4), the calculation method for the comprehensive performance vector S of the reference device and the device to be measured using normalization is shown in formula (3): (3) In the formula: A, B, Q, and R are all column vectors with m rows extracted from the key performance index matrix U. The subscript i represents the reference device number, and the subscript j represents different key performance indicators.

[0023] The calculation method for the price coefficient vector P of the reference equipment in step 5) is shown in formula (4): (4) Where Pmax and Pmin are the maximum and minimum prices of similar equipment in the price calculation database, respectively, and the subscript i represents the reference equipment number.

[0024] The calculation method for the cost-effectiveness parameter G of the equipment to be measured in step 6) is shown in formula (5): (5) Where y represents the number of reference devices, and the subscript i represents the reference device serial number.

[0025] The calculation method for the target price Z of the equipment to be measured in step 7) is shown in formula (6): (6).

[0026] Where y+1 represents the serial number of the device to be measured.

[0027] Specific implementation examples: Step 1: Taking an aircraft's onboard equipment as an example, collect relevant information from multiple similar devices to form a database. The database includes the device name, device price, price year, and various technical specifications of the device.

[0028] Step 2: Based on the characteristics of the equipment, select four performance parameters as key indicators: control function, motor power, brush area, and durability; and the R value corresponding to each of the four indicators is 1 (the higher the value, the better); through expert scoring, determine the weights of control function, motor power, brush area, and durability to be 0.35, 0.25, 0.2, and 0.2, respectively; at the same time, determine the extreme value range of each key indicator based on the database content.

[0029] Step 3: Based on the characteristics of the equipment to be measured, four pieces of equipment with similar functions and prices from the past three years were selected as reference equipment. The parameters and prices of key indicators were extracted from the database to form a reference equipment data matrix H.

[0030] Step 4: Calculate the normalized performance parameters of each device for each indicator, and sum them to obtain the comprehensive performance S for each wiper device. The calculation method of the performance vector S is shown in formula (1): (1) Taking the windshield wiper of an aircraft as an example, in the formula: A is the maximum value of each key indicator, B is the minimum value of each key indicator, Q is the weight of each indicator, R is 1, the subscript i represents the equipment number (i=1~4), and the subscript j represents different indicators (j=1~4).

[0031] Step 5: Based on the extreme values ​​Pmax and Pmin of the relevant equipment prices in the price calculation database, calculate the price coefficient P for each of the four reference equipment items; Step 6: The ratio of price coefficient P to overall performance S is the cost-effectiveness parameter. Calculate the cost-effectiveness parameters for the four reference devices one by one, sum them, and take the average to obtain the cost-effectiveness parameter G of the device to be tested. Step 7: The ratio of the cost-effectiveness parameter G and the comprehensive performance S of the equipment to be measured is the price coefficient of the equipment to be measured. Based on the minimum price Pmin of the equipment, the result of multiplying the price coefficient by the difference between the maximum price Pmax and Pmin of the equipment is obtained, which gives the target price Z of the equipment to be measured.

[0032] This method for calculating the target price of airborne equipment comprehensively considers the technical characteristics and market features of the equipment, establishing a mathematical model of performance parameters and prices to calculate the target price of aircraft airborne equipment. Compared with current price calculation methods, this invention's method references market prices of similar equipment, considers performance indicators, does not rely on supplier data, does not require repeated iterations, and is characterized by its scientific rationality, high accuracy, fast calculation speed, and short calculation cycle.

Claims

1. A method for calculating the target price of aircraft avionics based on performance parameters, characterized in that, The method includes: Step 1: Based on the function, composition, and performance parameters of the equipment for which the target price is to be calculated, collect price information and relevant performance indicators of similar equipment in multiple industries to form a basic database for price calculation; Step 2: Based on the functional characteristics of the equipment for which the target price is to be calculated, determine m key performance indicators with typical representative meanings, and determine the extreme values, weights and indicator types of the key performance indicators based on the content of the price calculation database, forming a key performance indicator matrix U; Step 3: Based on the function, composition and key performance indicators of the equipment to be measured at the target price, select y equipment from the price measurement database as reference equipment, extract m key indicator data and price data corresponding to the y reference equipment respectively, and combine them with the indicator data of the equipment to be measured at the target price to form a reference equipment data matrix H; Step 4: Extract columns A, B, Q, and R of the key performance indicator matrix U to form a column vector with m rows. Calculate the comprehensive performance vector S of the reference equipment and the equipment for which the target price is to be measured using a normalized method. Step 5: Calculate the price coefficient vector P of the reference equipment based on the extreme values ​​Pmax and Pmin of similar equipment prices in the price calculation database; Step 6: Calculate the cost-performance parameter G of the equipment with the target price to be measured by using the price coefficient vector P and the comprehensive performance vector S; Step 7: Calculate the target price Z of the equipment to be measured.

2. The method for calculating the target price of aircraft avionics based on performance parameters according to claim 1, characterized in that, The price calculation database mentioned in step 1) contains the equipment name, equipment price, price year, and various technical specifications of similar equipment.

3. The method for calculating the target price of aircraft avionics based on performance parameters according to claim 2, characterized in that, Step 2) The m-th row vector of the key performance indicator matrix U U m The form is: In the formula: N is the indicator name, A is the maximum value of the indicator in the price calculation database, B is the minimum value of the indicator in the price calculation database, Q is the weight of the indicator, the sum of the weights Q of m indicators is 1, R is the indicator type, R=0 means the smaller the indicator is, the better, R=1 means the larger the indicator is, the better.

4. The method for calculating the target price of aircraft avionics based on performance parameters according to claim 3, characterized in that, Step 3) The y-th row vector of the reference device data matrix H Hy The form is: Where: x1~x m Let m be the key performance indicators of the reference equipment, P be the price of the reference equipment, and y be greater than 10.

5. The method for calculating the target price of aircraft avionics based on performance parameters according to claim 4, characterized in that, Step 4) uses a normalized method to calculate the comprehensive performance vector S of the reference equipment and the equipment for which the target price is to be measured. In the formula: A, B, Q, and R are all column vectors with m rows extracted from the key performance index matrix U. The subscript i represents the reference device number, and the subscript j represents different key performance indicators.

6. The method for calculating the target price of aircraft avionics based on performance parameters according to claim 5, characterized in that, The method for calculating the price coefficient vector P of the reference equipment in step 5) is as follows: Where Pmax and Pmin are the maximum and minimum prices of similar equipment in the price calculation database, respectively, and the subscript i represents the reference equipment number.

7. The method for calculating the target price of aircraft avionics based on performance parameters according to claim 6, characterized in that, The calculation method for the cost-effectiveness parameter G of the target-priced equipment in step 6) is as follows: Where y represents the number of reference devices, and the subscript i represents the reference device serial number.

8. The method for calculating the target price of aircraft avionics based on performance parameters according to claim 7, characterized in that, The calculation method for the target price Z of the equipment to be measured in step 7) is as follows: Where y+1 represents the serial number of the equipment for which the target price is to be calculated.

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