Pantograph control system of railway vehicle

Abstract

The invention relates to the technical field of pantographs, in particular to a rail vehicle pantograph control system which comprises a contact quality monitoring module, a pantograph dynamic adjustment module, a pantograph performance evaluation module and a pantograph optimization control module. The method optimizes the efficiency and stability of power transmission through the accurate measurement of the track form and the characteristics of the pantograph and the real-time monitoring and analysis of the contact pressure value, ensures that the power transmission is carried out in the optimal state through the continuous evaluation of the contact state and the dynamic adjustment of the position of the pantograph, and improves the reliability of the power transmission. The energy waste is obviously reduced, the response speed of the system is improved, the real-time performance evaluation and feedback mechanism is introduced, each operation and adjustment are based on the latest performance data, the system is allowed to be continuously self-optimized, the overall operation efficiency and reliability are improved, and through the refined control process, the energy consumption is reduced. And the lifting speed and the inclination angle of the pantograph are optimized, so that the matching degree with a contact network is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pantographs, and in particular to a pantograph control system for a rail vehicle. Background Art

[0002] A pantograph is a power transmission device used in electrified rail vehicles. As a key component in electrified rail transit systems, the pantograph is responsible for efficiently transmitting power from overhead cables to vehicles. This covers various mechanical and electrical properties of the pantograph, including its dynamic contact performance, durability, and integration with vehicle control systems.

[0003] Among them, the rail vehicle pantograph control system involves a system for managing and optimizing the interaction between the pantograph and overhead wires. Its main purpose is to ensure a stable and efficient connection between the pantograph and the power line so that the rail vehicle can seamlessly receive the required power. By precisely controlling the rise and fall and contact pressure of the pantograph, it helps to maximize energy utilization efficiency, reduce operation and maintenance costs, and improve the reliability and performance of the entire electrified rail system.

[0004] The existing system lacks the ability to adjust and optimize in real time, which means that the contact quality between the pantograph and the contact network is often affected under changing track conditions, resulting in energy loss and increased operation and maintenance costs. Traditional control systems are slow to respond when dealing with contact problems during high-speed operation or in severe weather conditions, and are unable to adjust the position of the pantograph in real time to maintain the optimal contact state, which in turn affects the power supply and operational safety of the entire vehicle. The monitoring and evaluation of pantograph performance in existing technologies mostly relies on periodic inspections rather than continuous monitoring, which limits the ability to prevent faults and carry out immediate maintenance. This is particularly problematic during long-term operation and across regions. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a pantograph control system for a rail vehicle.

[0006] In order to achieve the above object, the present invention adopts the following technical solution: a rail vehicle pantograph control system, the system comprising: The contact quality monitoring module uses a pantograph-catenary contact pressure sensor based on track morphology and pantograph characteristics to measure the contact pressure between the pantograph and the catenary, analyze the pantograph's contact status, and evaluate the contact effect between the pantograph and the catenary to obtain a contact quality index. The pantograph dynamic adjustment module adjusts the pantograph lifting mechanism based on the contact quality index, modifies its lifting speed and tilt angle, matches the optimal contact position, records the adjustment parameters, analyzes the effect of the lifting mechanism adjustment, and obtains adjustment feedback data; The pantograph performance evaluation module uses the adjustment feedback data to evaluate the current transmission efficiency and contact quality of the pantograph, compare the current and standard operating parameters, calculate the performance deviation, and evaluate the operating efficiency of the pantograph to obtain a performance evaluation record; The pantograph optimization control module adjusts the PID control parameters of the pantograph based on the performance evaluation record, refines the pantograph control process, and continuously optimizes the pantograph operating parameters to obtain a parameter optimization control log.

[0007] The present invention is improved in that the steps of analyzing the contact state of the pantograph are specifically as follows: Based on the track morphology and pantograph characteristics, the contact pressure between the pantograph and the catenary is measured using a pantograph-catenary contact pressure sensor. Real-time data collection is performed and the collected data is normalized to obtain standardized contact pressure data. To analyze the normalized contact pressure data, the formula:

[0008] Calculate the pressure fluctuation and obtain the contact state analysis results, where Indicates the standard deviation of the contact pressure, which is used to evaluate the fluctuation degree of the contact pressure value. Representative The contact pressure value measured Represents the average value of pressure, Represents the number of measurements.

[0009] The present invention is improved in that the step of obtaining the contact quality index is specifically as follows: Based on the contact state of the pantograph and the real-time monitored contact pressure data, the formula is adopted:

[0010] Calculate the deviation ratio of each measurement to the average value to obtain the contact effect evaluation record, where: is the contact quality index, Representative The contact pressure value measured Represents the average value of pressure, is the number of measurements; Based on the contact effect evaluation records, a quantitative analysis method is applied to score the contact quality, and the contact quality index is obtained by combining the uniformity of contact pressure, frequent pressure fluctuations and the impact on performance.

[0011] The present invention is improved in that the step of matching the optimal contact position is specifically as follows: Based on the contact quality indicators, evaluate the current pantograph contact status, including voltage stability and historical deviation data, and determine the contact effect improvement requirements; Based on the contact effect improvement demand data, the formula is adopted:

[0012] Get the optimal lifting speed and tilt angle, where Indicates the optimal lifting speed of the lifting mechanism, represents the optimal tilt angle of the pantograph, is the voltage stability index, is the optimal value of the tilt angle obtained from the analysis of historical data, is a weighting factor used to adjust the effect of tilt angle deviation; Based on the optimal lifting speed and tilt angle, the lifting mechanism of the pantograph is adjusted, and the adjustment accuracy and effectiveness are verified to match the optimal contact position.

[0013] The present invention is improved in that the step of obtaining the adjustment feedback data is specifically as follows: According to the adjusted pantograph lifting mechanism, key parameters of the adjustment process are monitored and recorded in real time, including lifting speed, tilt angle and voltage change data, to obtain a key parameter data set; The key parameter data set is analyzed, and a time series analysis is performed on the relationship between the voltage response and the mechanical position adjustment to evaluate the immediate effect and stability of the adjustment and obtain adjustment feedback data.

[0014] The present invention is improved in that the step of comparing the current and standard operating parameters is specifically as follows: Utilizing the adjustment feedback data, extracting real-time operating parameters of the pantograph, including current and voltage values, evaluating the current transmission efficiency and contact quality of the pantograph under different working conditions, and obtaining current operating parameters; Compare the current operating parameters to the standard operating parameters using the formula:

[0015] Calculating performance deviation index ,in, Represents the current operating parameters, represents standard operating parameters, is the number of parameters.

[0016] The present invention is improved in that the steps of obtaining the performance evaluation record are specifically as follows: Extract key operating parameters, including current, voltage, and temperature, analyze their impact on operating efficiency under various working conditions, and obtain efficiency impact analysis results; Based on the efficiency impact analysis results, the operating efficiency of the pantograph is evaluated to obtain a performance evaluation log.

[0017] The present invention is improved in that the steps of obtaining the parameter optimization control log are specifically as follows: Analyzing the operating parameter data in the performance evaluation record, including real-time changes in current and voltage, determining the response characteristics of the pantograph under different conditions, identifying key parameters that need to be adjusted in PID control, and obtaining a PID control parameter set; Based on the PID control parameter set, the response efficiency and stability of the pantograph are optimized using the formula:

[0018] Get new PID parameters ,in, Represents the current control parameter value, is the current performance deviation, is the target performance deviation, It is the adjustment coefficient, which is used to control the step size of PID parameter adjustment; Based on the new PID parameters, the pantograph control process is refined, the operation effect is monitored, and the pantograph operation parameters are continuously optimized to obtain a parameter optimization control log.

[0019] Compared with the prior art, the advantages and positive effects of the present invention are: In the present invention, the efficiency and stability of power transmission are optimized through the precise measurement of track morphology and pantograph characteristics, and real-time monitoring and analysis of contact pressure values. Through continuous evaluation of contact status and dynamic adjustment of pantograph position, power transmission is ensured to be carried out in the optimal state, which significantly reduces energy waste and improves system response speed. The introduction of real-time performance evaluation and feedback mechanism makes each operation and adjustment based on the latest performance data, allowing the system to continuously self-optimize, thereby improving the overall operating efficiency and reliability. Through refined control processes, the lifting speed and tilt angle of the pantograph are optimized, thereby improving the matching degree with the contact network. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a system flow chart of the present invention; Figure 2 This is a flow chart for analyzing the contact state of the pantograph in the present invention; Figure 3 This is a flow chart for obtaining the contact quality index in the present invention; Figure 4 This is a flow chart for matching the optimal contact position in the present invention; Figure 5 This is a flow chart for obtaining adjustment feedback data in the present invention; Figure 6 A flow chart comparing current and standard operating parameters in the present invention; Figure 7 A flowchart for obtaining performance evaluation records in the present invention; Figure 8 This is a flow chart for obtaining parameter optimization control logs in the present invention. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention. In addition, in the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0023] Example

[0024] See also Figure 1 The present invention provides a technical solution: a rail vehicle pantograph control system comprising: The contact quality monitoring module uses a pantograph-catenary contact pressure sensor based on track morphology and pantograph characteristics to measure the contact pressure between the pantograph and the catenary, analyze the pantograph's contact status, and evaluate the contact effect between the pantograph and the catenary to obtain a contact quality index. The pantograph dynamic adjustment module adjusts the pantograph lifting mechanism based on the contact quality index, modifies its lifting speed and tilt angle, matches the optimal contact position, records the adjustment parameters, analyzes the effect of the lifting mechanism adjustment, and obtains adjustment feedback data; The pantograph performance evaluation module uses the adjustment feedback data to evaluate the current transmission efficiency and contact quality of the pantograph, compare the current and standard operating parameters, calculate the performance deviation, and evaluate the operating efficiency of the pantograph to obtain a performance evaluation record; The pantograph optimization control module adjusts the PID control parameters of the pantograph based on the performance evaluation records, refines the pantograph control process, and continuously optimizes the pantograph operating parameters to obtain the parameter optimization control log.

[0025] The contact quality indicators include contact pressure, current consistency, and voltage stability. The adjustment feedback data includes adjustment compliance rate, response time, and stability evaluation results. The performance evaluation records include energy efficiency level, performance recovery index, and maintenance frequency. The parameter optimization control log includes adjustment effect records, parameter adjustment history, and efficiency improvement records.

[0026] See also Figure 2 The analysis steps of the contact state of the pantograph are specifically as follows: Based on the track morphology and pantograph characteristics, the contact pressure between the pantograph and the catenary is measured using a pantograph-catenary contact pressure sensor. Real-time data collection is performed and the collected data is normalized to obtain standardized contact pressure data. Track morphological characteristics are obtained through real-time monitoring of track geometric parameters, including track elevation, flatness, waveform and other parameters. Pantograph characteristics are identified by measuring its running posture, friction characteristics and geometric parameters. During the measurement process, the pantograph-catenary contact pressure sensor is installed at the connection between the pantograph and the catenary to record the contact force in real time. The collected pressure signal is converted into digital data. The sampling data of different time periods are sorted and averaged. Normalization processing includes dividing the measurement data into specific intervals and converting them into dimensionless parameters to eliminate measurement errors and equipment deviations, thereby forming complete standardized contact pressure data.

[0027] To analyze the normalized contact pressure data, the formula:

[0028] Calculate the pressure fluctuation and obtain the contact state analysis results, where Indicates the standard deviation of the contact pressure, which is used to evaluate the fluctuation degree of the contact pressure value. Representative The contact pressure value measured Represents the average value of pressure, represents the number of measurements; There are 5 measurement data points, the specific pressure values ​​are: 100, 102, 98, 101 and 99, the average value is Calculated as , substitute into the formula to calculate the squared difference of each data point:

[0029]

[0030]

[0031]

[0032]

[0033] Then calculate the sum of squared differences:

[0034] Standard deviation Calculated as:

[0035] The results indicate that the pressure fluctuation is not large, showing that the contact state between the pantograph and the contact network is generally stable with low volatility, further indicating that the performance status was maintained in good condition during the monitoring period.

[0036] See also Figure 3 , the steps for obtaining the contact quality index are specifically as follows: Based on the contact state of the pantograph and the real-time monitored contact pressure data, the formula is adopted:

[0037] Calculate the deviation ratio of each measurement to the average value to obtain the contact effect evaluation record, where: is the contact quality index, Representative The contact pressure value measured Represents the average value of pressure, is the number of measurements; The measured value sequence of contact pressure is ,average value for (Calculated: ), number of measurements , substitute into the formula to calculate the deviation ratio:

[0038]

[0039]

[0040] Contact Quality Index:

[0041] The result is 0.987, or 98.7%, indicating that the contact between the pantograph and the contact network is relatively uniform, and the contact effect evaluation result is good, which is conducive to maintaining stable operation of the system.

[0042] Based on the contact effect evaluation records, a quantitative analysis method is applied to score the contact quality, and the contact quality index is obtained by combining the uniformity of the contact pressure, frequent pressure fluctuations and the impact on performance; Combined with the monitored contact pressure uniformity data and the frequency changes of pressure fluctuations, the impact of pressure fluctuations on the overall performance of the pantograph and the contact network is evaluated. The specific implementation process includes preliminary zoning and classification of the pressure data, establishing a pressure fluctuation curve diagram based on the time series of the measured values, and then judging the pressure fluctuation range by calculating the standard deviation value of the contact pressure. Combined with the recorded time periods and positions of frequent pressure fluctuations, the contact quality is divided into several levels using the classification standards. Each level is assigned a quantitative score according to its corresponding fluctuation range. Finally, the weighted score is calculated by combining different categories of pressure influencing factors through weight setting, such as fluctuation frequency weight and pressure stability weight. The score is compared with the preset performance level threshold, and the contact effect evaluation record is further revised to complete the contact quality scoring and obtain the contact quality index.

[0043] See also Figure 4 , the steps for matching the optimal contact position are as follows: Based on contact quality indicators, evaluate the current pantograph contact status, including voltage stability and historical deviation data, and determine the data needed to improve the contact effect; Real-time voltage readings are obtained through sensors, and voltage fluctuation records matching the current operating conditions are extracted from historical data. The deviations between real-time data and historical standard deviations and means are compared. The stability level of the current contact state is calculated by analyzing voltage volatility and maximum deviation values. The frequency and impact range of poor contact are calculated in combination with historical deviation data. The data is used as basic information for contact effect improvement needs and is used in subsequent optimization processes.

[0044] Based on the contact effect improvement demand data, the formula is used:

[0045] Get the optimal lifting speed and tilt angle, where Indicates the optimal lifting speed of the lifting mechanism, which is adjusted as part of the optimization process to match the best contact position. Indicates the optimal tilt angle of the pantograph, which is the target of optimization adjustment to ensure the best contact with the contact network. It is a voltage stability indicator and a key parameter for measuring the current contact quality. It is obtained through voltage measurement. It is the optimal value of the tilt angle obtained from the analysis of historical data and is used to guide the current adjustment. is a weighting factor used to adjust the effect of tilt angle deviation, ensuring that the tilt angle adjustment strength can be flexibly adjusted during the optimization process; The current measured voltage stability index is , the optimal tilt angle obtained from historical data analysis is , weight factor , current tilt angle , substitute into the formula to calculate:

[0046]

[0047]

[0048] The aim is to capture a point where the weighted sum of voltage stability and tilt angle deviation is minimized, so as to adjust the movement of the pantograph to achieve the best contact effect. The results show that the current contact state requires optimizing the speed and tilt angle of the lifting mechanism to match the calculated optimal adjustment value, providing a clear basis for system adjustment.

[0049] Adjust the pantograph lifting mechanism based on the optimal lifting speed and tilt angle, and verify the accuracy and effectiveness of the adjustment to match the optimal contact position; According to the optimization results, the speed parameters and tilt angle parameters of the lifting mechanism are set. The contact position of the mechanism after adjustment is monitored in real time by performing the lifting action. The sensor is used to capture the data of the voltage change after adjustment, and the fluctuation range of the contact voltage and the stability of the adjusted voltage are calculated to verify whether the adjusted contact position meets the optimization goal. At the same time, the specific parameters of the adjustment and the real-time monitoring data are recorded, and the records are organized into the accuracy and effectiveness analysis results after adjustment, and finally the success rate of matching the optimal contact position is verified.

[0050] See also Figure 5 , the specific steps for obtaining the adjusted feedback data are as follows: Based on the adjusted pantograph lifting mechanism, key parameters during the adjustment process are monitored and recorded in real time, including lifting speed, tilt angle, and voltage change data, to obtain a key parameter data set; Real-time monitoring and recording of key parameters during the adjustment process, including sensors installed on the lifting mechanism to measure the lifting speed and tilt angle, and real-time recording of voltage change data after adjustment through voltage sensors. During the adjustment process, parameter values ​​are collected every second at regular intervals, and all parameters are stored in a temporary data buffer to prevent data loss. The monitoring link combines real-time updates of mechanical and electrical signals to identify change points in the adjustment process. Finally, the time series data of lifting speed, tilt angle and corresponding voltage changes are packaged and stored to generate a key parameter data set.

[0051] Analyze key parameter data sets, perform time series analysis on the relationship between voltage response and mechanical position adjustment, evaluate the immediate effect and stability of the adjustment, and obtain adjustment feedback data; First, each set of lifting speed, tilt angle and corresponding voltage data points in the time series are extracted, and a preliminary analysis of the parameter change trend is conducted in chronological order. The adjustment stages with obvious changes are screened out. By comparing the relationship between the data points, the correlation between voltage fluctuations and mechanical position adjustment is calculated. The piecewise linear regression method is used to extract the response interval during the adjustment process, and the immediate effect and long-term stability of the adjustment are evaluated. Finally, the analysis results are summarized as adjustment feedback data for subsequent optimization analysis and decision-making.

[0052] See also Figure 6 , the comparison steps between current and standard operating parameters are as follows: Using the adjustment feedback data, the real-time operating parameters of the pantograph, including current and voltage values, are extracted. The current transmission efficiency and contact quality of the pantograph under different working conditions are evaluated to obtain the current operating parameters. By partitioning and extracting the operation logs of monitoring records, the current and voltage data points when operating under different environmental conditions are selected, sorted according to timestamps and an operating parameter time series is established. The peak current and stable voltage data recorded by real-time monitoring are used as the main parameter sources. Outliers are eliminated and the correlation between parameters is calculated. The calculation includes a weighted comparison of average current, instantaneous voltage and working time. The results are integrated into a set of data sets reflecting current transmission efficiency and contact quality to obtain the current operating parameters.

[0053] Compare the current operating parameters with the standard operating parameters using the formula:

[0054] Calculating performance deviation index ,in, Represents the current operating parameters, represents standard operating parameters, is the number of parameters; There are three parameters, current (10A, 12A standard), voltage (110V, 115V standard), temperature (50℃, 45℃ standard), substitute them into the formula for calculation:

[0055]

[0056]

[0057]

[0058]

[0059] The results show that the overall performance deviation between the current operating parameters and the standard parameters is 0.205, or 20.5%, indicating a certain decline in operating efficiency or a need for equipment maintenance.

[0060] See also Figure 7 ,The specific steps for obtaining performance evaluation records are: Extract key operating parameters, including current, voltage, and temperature, analyze their impact on operating efficiency under various working conditions, and obtain efficiency impact analysis results; Real-time records of current and voltage are called up in time series, and the average values ​​and fluctuation amplitudes of the parameters at different time points are calculated. At the same time, the ambient temperature changes recorded in the equipment operation log are extracted, and the data are classified according to operating conditions. The potential impact of the parameters on the operating efficiency of the pantograph is analyzed, and a relationship model between the parameters and the operating efficiency is established. The efficiency changes under different working conditions are summarized as the efficiency impact analysis results.

[0061] Based on the efficiency impact analysis results, the operating efficiency of the pantograph is evaluated and a performance evaluation log is obtained; The operating efficiency of the pantograph is evaluated, and working conditions with significant parameter fluctuations are selected as the key analysis objects. The overall operating efficiency is calculated using the weighted average method. The actual efficiency value is calculated by combining the weights of the current and voltage fluctuation amplitudes. At the same time, the impact of the ambient temperature of each working condition on the efficiency change is verified. All analysis data are organized and summarized into a performance evaluation log in a unified format, forming a log record containing working condition efficiency data and operating conditions.

[0062] See also Figure 8 , the specific steps for obtaining parameter optimization control logs are: Analyze the operating parameter data in the performance evaluation records, including real-time changes in current and voltage, determine the response characteristics of the pantograph under different conditions, identify the key parameters that need to be adjusted in PID control, and obtain the PID control parameter set; By extracting the changes in current and voltage in real time, combined with the pantograph operation mode under different environmental conditions, the numerical relationship of each set of parameters is analyzed point by point, the fluctuating part and the stable part of the parameters are separated, and each set of data is normalized to enable a unified analysis of the response characteristics under different conditions, compare the mutual influence of voltage and current changes, calculate the response delay and overshoot amplitude of the pantograph in dynamic adjustment, and finally identify the key parameters that need to be optimized in PID control, including proportional, integral and differential factors, to form a set of PID control parameters.

[0063] Based on the PID control parameter set, the response efficiency and stability of the pantograph are optimized using the formula:

[0064] Get new PID parameters ,in, Represents the current control parameter value, is the current performance deviation, is the target performance deviation, It is the adjustment coefficient, which is used to control the step size of PID parameter adjustment; The following data was collected, the current PID parameters is 2.5, the current performance deviation is 0.05, the target performance deviation The adjustment coefficient is 0.02. is 1.0, substitute it into the formula for calculation:

[0065]

[0066]

[0067]

[0068] The results show that the new PID parameters It is 2.53, reflecting that the control system can be fine-tuned through adjustment to achieve a better performance state.

[0069] Based on the new PID parameters, the pantograph control process is refined, the operation effect is monitored, and the pantograph operating parameters are continuously optimized to obtain the parameter optimization control log; First, by monitoring the operating performance of the pantograph in real time, recording the changes in current and voltage, dynamically adjusting the control strategy to optimize the operating process, setting up multiple test scenarios to observe the response effects under different PID parameters, and analyzing the operating characteristics of the pantograph by recording the adjusted voltage recovery time, steady-state current value and dynamic fluctuation, integrating operation records and monitoring data, and generating a parameter optimization control log, which records in detail the key parameters after each adjustment and the corresponding performance change trends, providing data support for subsequent system optimization.

[0070] The above are merely preferred embodiments of the present invention and do not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A rail vehicle pantograph control system, characterized in that: The system comprises: The contact quality monitoring module uses the pantograph contact pressure sensor to measure the contact pressure between the pantograph and the contact network based on the track morphology and pantograph characteristics, analyze the contact state of the pantograph, and evaluate the contact effect between the pantograph and the contact network to obtain the contact quality index; The pantograph dynamic adjustment module adjusts the pantograph lifting mechanism based on the contact quality index, modifies its lifting speed and tilt angle, matches the optimal contact position, records the adjustment parameters, analyzes the effect of the lifting mechanism after adjustment, and obtains adjustment feedback data; The pantograph performance evaluation module uses the adjustment feedback data to evaluate the current transmission efficiency and contact quality of the pantograph, compare the current and standard operating parameters, calculate the performance deviation, and evaluate the operating efficiency of the pantograph to obtain a performance evaluation record; The pantograph optimization control module adjusts the PID control parameters of the pantograph based on the performance evaluation record, refines the pantograph control process, and continuously optimizes the pantograph operation parameters to obtain a parameter optimization control log.

2. The rail vehicle pantograph control system according to claim 1, characterized in that: The analysis steps of the contact state of the pantograph are specifically as follows: Based on the track morphology and pantograph characteristics, the contact pressure value between the pantograph and the contact network is measured using a pantograph-catenary contact pressure sensor, real-time data collection is performed, and the collected data is normalized to obtain standardized contact pressure data; To analyze the normalized contact pressure data, the formula is used: Calculate the pressure fluctuation and obtain the contact state analysis results, where: Represents the standard deviation of the contact pressure, which is used to evaluate the fluctuation of the contact pressure value. Representative The contact pressure value measured, Represents the average value of pressure, Represents the number of measurements.

3. The rail vehicle pantograph control system according to claim 1, characterized in that: The steps for obtaining the contact quality index are specifically as follows: Based on the contact state of the pantograph and the contact pressure data monitored in real time, the formula is adopted: Calculate the deviation ratio of each measurement to the average value to obtain the contact effect evaluation record, where: is the contact quality index, Representative The contact pressure value measured, Represents the average value of pressure, is the number of measurements; Based on the contact effect evaluation record, the contact quality is scored using a quantitative analysis method, and the contact quality index is obtained by combining the uniformity of the contact pressure, frequent pressure fluctuations and the impact on performance.

4. The rail vehicle pantograph control system according to claim 1, characterized in that: The steps of matching the optimal contact position are specifically as follows: Based on the contact quality index, evaluate the current pantograph contact status, including voltage stability and historical deviation data, and determine the contact effect improvement requirement data; Based on the contact effect improvement demand data, the formula is adopted: Get the optimal lifting speed and tilt angle, where Indicates the optimal lifting speed of the lifting mechanism, represents the optimal tilt angle of the pantograph, is the voltage stability index, is the optimal value of the tilt angle obtained from the analysis of historical data, is the weight factor used to adjust the effect of tilt angle deviation; Based on the optimal lifting speed and tilt angle, the lifting mechanism of the pantograph is adjusted, and the adjustment accuracy and effectiveness are verified to match the optimal contact position.

5. The rail vehicle pantograph control system according to claim 1, characterized in that: The steps of obtaining the adjustment feedback data are specifically as follows: According to the adjusted pantograph lifting mechanism, key parameters in the adjustment process are monitored and recorded in real time, including lifting speed, tilt angle and voltage change data, to obtain a key parameter data set; The key parameter data set is analyzed, and a time series analysis is performed on the relationship between the voltage response and the mechanical position adjustment to evaluate the immediate effect and stability of the adjustment and obtain the adjustment feedback data.

6. The rail vehicle pantograph control system according to claim 1, characterized in that: The steps of comparing the current and standard operating parameters are specifically as follows: Utilizing the adjustment feedback data, extracting the real-time operating parameters of the pantograph, including current and voltage values, evaluating the current transmission efficiency and contact quality of the pantograph under different working conditions, and obtaining the current operating parameters; Compare the current operating parameters with the standard operating parameters using the formula: Calculating the performance deviation index ,in, Represents the current operating parameters, represents standard operating parameters, is the number of parameters.

7. The rail vehicle pantograph control system according to claim 1, characterized in that: The steps for obtaining the performance evaluation record are specifically as follows: Extract key operating parameters, including current, voltage and temperature, analyze the impact of operating parameters on operating efficiency under various working conditions, and obtain efficiency impact analysis results; Based on the efficiency impact analysis results, the operating efficiency of the pantograph is evaluated to obtain a performance evaluation log.

8. The rail vehicle pantograph control system according to claim 1, characterized in that: The steps for obtaining the parameter optimization control log are specifically as follows: Analyzing the operating parameter data in the performance evaluation record, including real-time changes in current and voltage, determining the response characteristics of the pantograph under different conditions, identifying key parameters that need to be adjusted in PID control, and obtaining a PID control parameter set; Based on the PID control parameter set, the response efficiency and stability of the pantograph are optimized using the formula: Get new PID parameters ,in, Represents the current control parameter value, is the current performance deviation, is the target performance deviation, It is the adjustment coefficient, which is used to control the step size of PID parameter adjustment; Based on the new PID parameters, the pantograph control process is refined, the operation effect is monitored, and the pantograph operation parameters are continuously optimized to obtain a parameter optimization control log.

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