Hot isostatic pressing apparatus and system for processing of high temperature homogenously heated metal powder

Abstract

The present application relates to the technical field of metal powder processing, and discloses a high-temperature uniform heating hot isostatic pressing equipment and system for metal powder processing, which comprises an equipment rack, vertical guide sliding blocks are arranged on both sides of the inside of the equipment rack, a pressurizing transmission screw rod is assembled in the middle of the equipment rack, the top end of the pressurizing transmission screw rod extends out of the top of the equipment rack, and a hand wheel pressurizing assembly is fixedly installed at the top end of the pressurizing transmission screw rod. Through the design of the multi-source signal synchronous acquisition module, the acquisition architecture of the real-time temperature of each heating zone, the multi-point distributed temperature in the zone, the actual opening of the valve, the gas inlet temperature and pressure and other data is established, the simple mode of relying on only a single or a small number of temperature sensors for centralized feedback of the traditional equipment is changed, and the technical problems of lacking fine perception of the temperature state of the multi-zone in the cylinder and structural blind area in the temperature field perception level are solved.

Description

Technical Field

[0001] This invention relates to the field of metal powder processing technology, specifically to a hot isostatic pressing (HIP) equipment and system for metal powder processing with high-temperature uniform heating. Background Technology

[0002] Hot isostatic pressing (HIP) is an advanced material forming and sintering technology. It involves compacting and sintering metal powder within a sealed container under high temperature and pressure to obtain powder metallurgy parts with uniform internal structure and excellent performance. It is primarily used in the fabrication of key components for critical equipment in aerospace, nuclear power, and large-scale precision equipment, and its application is irreplaceable. However, the development trend of powder metallurgy parts is towards larger sizes and more multifunctional applications. Some high-end applications are placing higher demands on the uniformity and batch stability of the internal quality and performance of workpieces. The limitations of traditional HIP equipment in terms of temperature field control precision, multi-region controllability, and dynamic process control are becoming increasingly prominent.

[0003] In existing technologies, the thermal heating systems of hot isostatic presses typically employ conventional single-zone or simple partitioned heating methods. They rely on a single or limited number of temperature sensors to provide feedback on the internal temperature of the cylinder, achieving centralized and unified control. The heating power and airflow distribution strategies are pre-designed based on experience or simulation before process execution, and their application in actual production remains largely unchanged. This approach has the following drawbacks: 1. In actual production, especially when processing large, irregularly shaped workpieces, the natural convection and thermal radiation of the gas inside the cylinder are limited. Simple single heating zone or shallow zone heating will create a serious temperature gradient along the height or radial direction inside the cylinder. When a certain amount of airflow is added to accelerate the mass and heat transfer rate inside the cylinder, the non-uniform airflow will cause even greater differences inside the cylinder. The uneven temperature inside the cylinder will inevitably cause great differences in density, microstructure and mechanical properties in different parts of the powder product, which will greatly affect the product yield and batch consistency. Second, the internal thermal inertia of the cylinder is large and the heat load of each area affects each other. However, the existing centralized temperature control strategy only uses a small number of temperature sensors to uniformly regulate the entire heating system. When the temperature of a certain area fluctuates, it takes a long time to restore balance through overall regulation. In this process, it is easy to cause a chain reaction in other areas, resulting in slow temperature regulation response speed, large overshoot, and the robustness and anti-interference ability of the control system cannot meet the process requirements of high-quality products. Third, in the existing technology, the existing heating power distribution scheme is preset before the start of the process. This one-time fixed program process makes it difficult for the equipment to actively perform cross-regional heat compensation or flow direction switching according to the real-time situation when facing irregular workpieces or complex processes that require multiple steps. This can easily lead to an imbalance state of local overheating or underheating, making it difficult to guarantee the process in some areas and resulting in poor workpiece quality. Summary of the Invention

[0004] This invention provides a hot isostatic pressing (HIP) device and system for processing metal powder with high-temperature uniform heating. It has the advantages of multi-zone independent heating and dynamic airflow precise guidance, and can implement coordinated control according to the real-time temperature status of each area in the cylinder, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a hot isostatic pressing (HIP) device and system for processing metal powder with uniform high-temperature heating, comprising a machine frame, wherein vertical guide sliders are provided on both sides inside the machine frame, a pressure transmission screw is assembled in the middle of the machine frame, and the top end of the pressure transmission screw extends out of the top of the machine frame, a handwheel pressure assembly is fixedly installed at the top end of the pressure transmission screw, and an upper pressure plate is provided at the end of the pressure transmission screw away from the handwheel pressure assembly; The equipment frame is provided with a cylindrical support base in the middle. A high-temperature pressure-bearing cylinder is placed on the surface of the cylindrical support base. The interior of the high-temperature pressure-bearing cylinder is divided into multiple independent heating zones along the height direction. Each independent heating zone is provided with an independent heating element, a micro flow guide nozzle and a micro proportional regulating valve. The inner wall of the high-temperature pressure-bearing cylinder is provided with thermocouples and fiber optic temperature sensors corresponding to the positions of each independent heating zone for real-time monitoring of the temperature of the zone. The high-temperature pressure-bearing cylinder is equipped with adjustable guide vanes between adjacent independent heating zones to guide the airflow to deflect in a directional manner between adjacent zones; An auxiliary lifting assembly is installed at the bottom of the equipment frame, and the output end of the auxiliary lifting assembly is connected to the cylinder support base. The equipment frame is connected to an electrical control box via cables. The electrical control box is connected to the thermocouples, fiber optic temperature sensors, valve position feedback sensors of the miniature proportional control valves, inlet temperature sensors and inlet pressure sensors of the main air intake pipe of each independent heating zone, and is electrically connected to the heating elements, miniature proportional control valves, adjustable guide vanes and preheaters of the main air intake pipe of each independent heating zone.

[0006] Optionally, the electrical control box integrates a multi-zone thermal collaborative control system, which includes a multi-source signal synchronous acquisition module, a global pre-compensation calculation module, a zone linkage compensation and thermal support decision module, a process stage fusion module, a multi-actuator drive control module, an over-temperature safety monitoring module, and a data communication interaction module.

[0007] This invention provides a hot isostatic pressing (HIP) apparatus and system for processing metal powder with high-temperature uniform heating, which has the following advantages compared with the prior art: This invention establishes an acquisition architecture for real-time temperature of each heating zone, distributed temperature at multiple points within the zone, actual valve opening, gas inlet temperature and pressure, etc., through the design of a multi-source signal synchronous acquisition module. By changing the simple mode of traditional equipment that relies on a single or a few temperature sensors for centralized feedback, it solves the technical problem of lack of refined perception of temperature status in multiple areas inside the cylinder and the presence of structural blind spots in the temperature field perception level.

[0008] This invention utilizes a global pre-compensation calculation module to solve for temperature differences based on the measured temperature curves of each zone and the target temperature curve of the process. By introducing predictive control logic and superimposing feedforward compensation terms supported by the system identification transfer function model, and outputting the power pre-adjustment amount of each heating zone, the dynamic characteristics of the temperature are corrected in advance. The response speed and steady-state accuracy of the temperature control system are improved, allowing the temperature control behavior to shift from passive following to active prediction. This avoids the situation where the temperature control scheme can only rely on a single feedback, resulting in a response delay that affects the quality of the workpiece.

[0009] This invention uses a zone-linked compensation and thermal support decision module to calculate the temperature gradient between adjacent zones. Once a local under-temperature or over-temperature area is identified, the cross-zone thermal support control logic is immediately triggered: on the one hand, the angle of the adjustable guide vane is adjusted to guide the hot airflow to deflect towards the low-temperature zone; on the other hand, the valve opening in the high-temperature zone is simultaneously reduced and the valve opening in the low-temperature zone is increased. Based on the pre-compensation power, a thermal support power correction term is superimposed, and finally the precise power adjustment amount of each zone is calculated. This enables the coordinated control of uniform temperature throughout the furnace, effectively suppresses the local temperature difference caused by uneven airflow distribution, and significantly improves the quality of various parts of irregularly shaped workpieces. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a control block diagram of the multi-zone thermal collaborative control system of the present invention; Figure 3 This is a flowchart of the partition linkage compensation and thermal support decision module of the present invention.

[0011] In the diagram: 1. Handwheel pressurization assembly; 2. Pressurization transmission screw; 3. Equipment frame; 4. Upper pressure plate; 5. High-temperature pressure-bearing cylinder; 6. Cylinder support base; 7. Auxiliary lifting assembly; 8. Vertical guide slider; 9. Electrical control box. Detailed Implementation

[0012] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0013] Please see Figures 1 to 3 The present invention provides a technical solution: a hot isostatic pressing equipment and system for processing metal powder with high temperature and uniform heating, including an equipment frame 3, vertical guide sliders 8 are provided on both sides inside the equipment frame 3, a pressure transmission screw 2 is assembled in the middle of the equipment frame 3, and the top end of the pressure transmission screw 2 extends out of the top of the equipment frame 3, a handwheel pressure assembly 1 is fixedly installed on the top end of the pressure transmission screw 2, and an upper pressure plate 4 is provided at the end of the pressure transmission screw 2 away from the handwheel pressure assembly 1; The equipment frame 3 is provided with a cylindrical support base 6 in the middle. A high-temperature pressure-bearing cylinder 5 is placed on the surface of the cylindrical support base 6. The interior of the high-temperature pressure-bearing cylinder 5 is divided into multiple independent heating zones along the height direction. Each independent heating zone is equipped with an independent heating element, a micro flow guide nozzle and a micro proportional regulating valve. The inner wall of the high-temperature pressure-bearing cylinder 5 is equipped with thermocouples and fiber optic temperature sensors corresponding to the positions of each independent heating zone for real-time monitoring of the temperature of the zone. In one specific implementation, the miniature proportional control valve can employ a high-temperature resistant alloy valve body and a metal hard-seal structure, with an operating temperature range covering room temperature to the maximum design temperature of the cylinder, and an operating pressure not lower than the maximum design pressure of the cylinder, ensuring reliable operation under all thermal isostatic pressure conditions. The high-temperature pressure-bearing cylinder 5 has adjustable guide vanes between adjacent independent heating zones inside, which are used to guide the airflow to deflect in a directional manner between adjacent zones; In one specific embodiment, the adjustable guide vane is made of a nickel-based high-temperature alloy (such as Inconel 718 or GH4169), which has good high-temperature strength and oxidation resistance below 800°C. The vane drive shaft is connected to an external servo motor of the cylinder through a high-temperature dynamic seal structure. The dynamic seal adopts a composite seal structure combining a metal bellows seal and a graphite packing seal to ensure reliable sealing under a working pressure of 200MPa. The deflection angle of the guide vane is controlled by a closed-loop servo motor with an angle control accuracy of ±1°. A movement clearance is reserved between the guide vane and the inner wall of the cylinder, the heating element, and the workpiece. The clearance amount depends on the cylinder size. The diameter and thermal expansion at operating temperature are determined. As an example, a gap of not less than 0.5% to 1.5% of the inner diameter of the cylinder is reserved between the end of the wing plate and the adjacent component. The amount of gap reduction caused by thermal expansion at the highest operating temperature is verified by thermal-structural coupled finite element simulation to ensure that no motion interference occurs when the wing plate deflection angle range is -30° to +30° across the entire temperature range. When the operating temperature of the cylinder exceeds 800°, higher-grade cobalt-based or ceramic-based high-temperature resistant materials can be selected to manufacture the guide wing plate, and the design parameters of the dynamic sealing structure are adjusted accordingly. An auxiliary lifting assembly 7 is installed at the bottom of the equipment frame 3, and the output end of the auxiliary lifting assembly 7 is connected to the cylinder support base 6; The equipment frame 3 is connected to an electrical control box 9 via cables. The electrical control box 9 is connected to the thermocouples, fiber optic grating temperature sensors, valve position feedback sensors of the miniature proportional control valves, inlet temperature sensors and inlet pressure sensors of the main air intake pipe of each independent heating zone, and is electrically connected to the heating elements, miniature proportional control valves, adjustable guide vanes and preheaters of the main air intake pipe of each independent heating zone.

[0014] In this embodiment, it should be specifically noted that the specific structures and connection methods of the above-mentioned equipment frame 3, pressure transmission screw 2, handwheel pressure assembly 1, upper pressure plate 4, vertical guide slider 8, cylinder support base 6, auxiliary lifting assembly 7, high-temperature pressure-bearing cylinder 5, independent heating element, micro guide nozzle, micro proportional regulating valve, thermocouple, fiber optic grating temperature sensor, adjustable guide vane, main air intake pipeline and preheater are all existing technologies for realizing hot isostatic pressing. This embodiment does not impose specific limitations, as long as the structural settings match the functional effects of this embodiment.

[0015] In a specific embodiment, the present solution adopts an indirect gas heating method, and combines the method that the high-temperature flue gas generated during gas combustion heats the circulating working medium, such as high-purity argon, which indirectly contacts the workpiece and metal powder inside the cylinder, so as to prevent the powder material from being polluted by water vapor, carbon dioxide and other substances in combustion products. In addition, a pre-heater, an inlet temperature sensor and an inlet pressure sensor can be arranged on the main intake pipeline to ensure that the temperature and pressure of the process gas entering the cylinder are stable and controllable, so as to meet the process requirements of the hot isostatic pressing process for clean atmosphere and accurate temperature control.

[0016] A multi-zone thermal cooperative control system is integrated in the electric control box 9, and the multi-zone thermal cooperative control system comprises a multi-source signal synchronous acquisition module, a global pre-compensation calculation module, a zone linkage compensation and thermal support decision module, a process stage fusion module, a multi-actuator drive control module, an over-temperature safety monitoring module and a data communication interaction module.

[0017] The multi-source signal synchronous acquisition module specifically comprises: As a front-end data acquisition unit of the multi-zone gas heating temperature control system, after synchronously accessing various sensing signals such as thermocouple signals, fiber Bragg grating temperature measurement signals, regulating valve position signals, and intake air temperature and pressure signals, the module can preprocess the multi-channel heterogeneous source signal data, and the specific acquisition and data preprocessing methods for providing synchronous and regular original perception data for global temperature pre-compensation calculation, zone thermal linkage regulation, process working condition fusion, over-temperature safety monitoring and data interaction transmission are as follows: 1. Acquisition method A first input end group is formed by thermocouples matched with each group of independent heating zones to collect real-time temperature signals of each heating zone, which is recorded as , i=1,2,…,N is the number of the heating zone, N represents the total number of heating zones, and the temperature unit is °C; A second input end group is formed by fiber Bragg grating temperature sensors arranged inside each independent heating zone to collect multi-point distributed temperature data in the heating zones, which is recorded as , wherein j=1,2,…, is the serial number of the fiber Bragg grating sensor in the i-th heating zone; By way of example, the number of fiber Bragg grating temperature sensors in each independent heating zone has a typical value range of 3 to 6, and the specific number is determined according to the cylinder diameter, zone height and temperature field measurement accuracy requirements, so as to ensure the representativeness of temperature measurement while taking into account the system cost and signal processing efficiency; In one specific embodiment, the fiber optic grating temperature sensor is encapsulated within a high-temperature resistant ceramic protective sleeve and installed in a temperature-measuring blind hole on the inner wall of the high-temperature pressure-bearing cylinder 5. The depth of the blind hole is determined according to the cylinder wall thickness to ensure that the distance between the sensor tip and the inner wall surface of the cylinder meets the thermal response time requirements. As an example and not a limitation, for a typical high-temperature pressure-bearing cylinder with a wall thickness of 20~50mm, the blind hole depth can be 10~30mm. The fiber optic grating temperature sensor achieves isolation from the high-temperature process gas through the above installation method, while ensuring rapid thermal response. Those skilled in the art can determine the appropriate blind hole depth according to the specific cylinder wall thickness and thermal response time requirements through conventional heat conduction calculations or finite element thermal simulations, which is a conventional technique. To prevent metal powder particles from contaminating the fiber Bragg grating sensor probe, a breathable metal powder filter (with a pore size no larger than 1 / 2 of the average particle size of the metal powder inside the cylinder) is installed at the opening of the temperature measurement blind hole. This allows high-temperature process gases to pass through to maintain the thermal response speed while preventing powder particles from entering the blind hole. The fiber optic lead is made of high-temperature resistant metal armored optical cable, which is led out from inside the cylinder through a sealed through-chamber connector to the external fiber Bragg grating demodulator. The sealed through-chamber connector adopts a conical metal sealing structure to ensure long-term reliable sealing under high temperature and high pressure. A third input group is formed by using valve position feedback sensors paired with miniature proportional control valves in each independent heating zone to collect the real-time actual opening signal of each valve, denoted as... The opening value ranges from 0 to 100%. The fourth input terminal is electrically connected to the output terminal of the main intake pipe inlet temperature sensor to collect the gas intake temperature, which is recorded as... ; The fifth input terminal is electrically connected to the output terminal of the main intake pipe inlet pressure sensor to collect the gas intake pressure, which is recorded as... .

[0018] 2. Data Processing (1) Signal conditioning processing Cold junction compensation and temperature linearization correction are applied to the thermocouple acquisition signals. The original fiber Bragg grating signal is wavelength demodulated and mapped into the corresponding temperature value. The analog signal of valve position feedback is subjected to ADC analog-to-digital conversion and 0~100% range normalization.

[0019] (2) Time synchronization processing Relying on the high-precision clock reference built into the electrical control box 9, the same sampling time is used. All sensor data is uniformly marked with time-series timestamps to achieve precise time-series alignment of multi-dimensional sensor signals.

[0020] (3) Data encapsulation processing The full-dimensional sensor data that has been processed and synchronized with time series will be integrated and packaged to construct a unified, synchronized multi-source dataset. ; This multi-source dataset Specifically, it includes: sampling time. Real-time temperature of thermocouples in each heating zone Temperature data collected by fiber Bragg grating temperature sensors in each heating zone Real-time opening degree of miniature proportional control valves in each heating zone Gas intake temperature Gas intake pressure ; 3. Data Output The output of this module is electrically connected to the inputs of the global pre-compensation calculation module, the zone linkage compensation and thermal support decision-making module, the process stage fusion module, the over-temperature safety monitoring module, and the data communication interaction module, respectively, and outputs standardized synchronous datasets in real time. .

[0021] The global pre-compensation calculation module specifically includes: This module receives the synchronization dataset output from the multi-source signal synchronization acquisition module. The temperature difference deviation is calculated by combining the measured temperature of each zone with the process target temperature curve. Predictive control logic is introduced and feedforward compensation is superimposed to output the power pre-adjustment amount of each zone in advance, so as to offset the temperature lag caused by the thermal inertia of the heating system. The processing method for achieving dynamic advance temperature correction is as follows: 1. Target temperature profile retrieval Read the target temperature curve of the current process stage issued by the process stage fusion module. The curve is generated by a preset process formula and uses a piecewise function to describe the temperature setting requirements of different processes. 2. Solving for zoned temperature deviation For each heating zone i, the average or maximum value of all fiber Bragg grating temperature measurement data within the zone is taken as the representative temperature of the zone. This leads to the temperature deviation of the zones. , 3. Calculation of pre-compensation power increment Combining the thermal inertia and hysteresis time constant of each zone (Unit: s), employing predictive control principles and utilizing historical deviation sequences. (m=1,2,…,M, where M is the length of the historical data window) and the transfer function model identified by the system. Solving for the pre-compensated power increment (Unit: kW); Transfer function model A first-order inertial plus pure time-delay model is adopted: ,in Let be the steady-state gain of the i-th partition (unit: °C / kW). The time constant (unit: s). The pure time delay is in seconds. The model was identified through step response experiments. The specific identification steps are as follows: (a) Test conditions: Under the unloaded state of the high temperature pressure cylinder 5, adjust the process gas flow rate of each heating zone to 50% of the rated operating flow rate, stabilize the initial temperature at the midpoint of the typical process temperature range (e.g., 400℃), and maintain the system pressure at the rated working pressure. (b) Step signal application: Apply a step power increment of 10% to 15% of the rated power to the i-th heating zone, while keeping the power of other zones constant, and record the response curve of the zone's representative temperature changing with time; the data sampling period Δt is 1 to 5 seconds, and the response data is continuously recorded for a duration of not less than 5 times the time constant; the step test is repeated no less than 3 times, and the average value of the multiple identification results is taken as the final model parameters; (c) Model parameter fitting: The least squares fitting method is used to fit the collected step response data with the first-order inertial plus pure time delay model to solve for the steady-state gain of the i-th partition. Time constant and pure lag time ; (d) Model validation: Compare the predicted output of the identified transfer function model with the actual step response data and calculate the goodness of fit R². When R² ≥ 0.95, the model is considered effective; otherwise, the step response test is repeated until the accuracy requirements are met. (e) Multi-condition identification: For different process stages such as heating, heat preservation, and cooling, the typical temperature points of each stage are identified according to the above steps (a) to (d), and a transfer function model parameter library corresponding to the process stage is established, so that the global pre-compensation calculation module can call the corresponding model parameters at different stages.

[0022] As a typical parameter range that can be referenced by those skilled in the art, for a hot isostatic pressing equipment that uses indirect gas heating, is divided into 4 to 8 independent heating zones along the height of the cylinder, and has a single-zone heating power of 10 to 50 kW, the steady-state gain of the transfer function model of each zone is... Typical values ​​range from 5 to 25℃ / kW, time constant The typical value range is 30~300 seconds, pure time delay. The typical value range is 5 to 30 seconds. In practical applications, the above parameters need to be determined through the above step response test, taking into account the structural dimensions of the specific equipment, the rated power of the heating element, and the physical properties of the process gas.

[0023] A simplified model can be achieved using a PI controller with feedforward compensation: ; Where L is the length of the integration window (recommended value is 10~20), to limit the calculation range of the integration term and avoid integration saturation. This is the proportionality coefficient (unit: kW / °C). The integral coefficient (unit: kW / °C·S). The feedforward compensation coefficient (unit: kW·s / °C) is used. If the measured temperature change rate is used instead of the target temperature change rate, it needs to be readjusted based on the actual temperature response curve during implementation. , The system has a fixed sampling period (unit: s). The measured representative temperature of the i-th partition is used. The measured temperature change rate is used instead of the target temperature change rate to avoid power overshoot when the slope of the target curve is too large. 4. Pre-compensation command output The solution obtained As the initial power adjustment reference value for each heating zone; 5. Data Output The output of this module is electrically connected to the input of the zone linkage compensation and thermal support decision module, outputting the pre-compensation power increment vector for the entire zone. .

[0024] The zone linkage compensation and hot support decision-making module specifically includes: This module receives the synchronization dataset output from the multi-source signal synchronization acquisition module. The pre-compensation power increment vector output by the global pre-compensation calculation module By eliminating thermal coupling interference between heating zones, a cross-zone thermal support control scheme is generated for local under-temperature and over-temperature areas. The pre-compensation power is corrected to obtain the final adjustment amount of each zone, thereby achieving uniform temperature control throughout the furnace. The specific processing flow is as follows: 1. Calculation of temperature gradient between regions For adjacent heating zones i and i+1, calculate the representative temperature difference between the two zones. If the absolute value of the temperature difference satisfies , The temperature gradient determination threshold is used to determine if there is a risk of localized temperature unevenness in the furnace. Among them, the temperature gradient determination threshold The determination method is as follows: based on the design operating temperature range of the high-temperature pressure-bearing cylinder 5 and the process requirements for temperature uniformity, it is pre-calibrated through thermal field simulation analysis or isothermal calibration tests, with a typical value range of 5~15℃. 2. Decision-making on cross-regional thermal support When partition i satisfies It exhibits an under-temperature state, and adjacent partition i+1 satisfies... When an overheating state is observed, the thermal support control logic is executed from the high-temperature zone i+1 to the low-temperature zone i: adjusting the angle of the adjustable guide vane between the two zones. This causes the flow guiding structure to deflect towards the low-temperature zone i, guiding the high-temperature hot airflow to supplement the low-temperature region; simultaneously, the opening of the micro proportional regulating valve in the high-temperature zone i+1 is slightly reduced. To reduce the gas intake volume, while appropriately increasing the valve opening in the low-temperature zone i. This increases the heating input to the area; when adjusting the opening of valves in each zone, the total intake pipe flow rate setpoint is kept constant, meaning the flow rate increment when the high-temperature zone closes is equal to the flow rate increment when the low-temperature zone increases, to ensure stable pressure inside the cylinder; the flow distribution adjustment meets the requirements. That is, the changes in valve opening in two adjacent zones are opposites of each other, where and These represent the changes in valve opening in region i and region i+1, respectively. 3. Zone power compensation correction Initial pre-compensation power increment Based on this, a thermal support power correction term is added, which is caused by the adjustment of the guide vanes and valve opening. Solve for the final power adjustment amount for each partition: ; in Based on the change in the deflection angle of the guide vane and valve opening change Calculate using the following formula: ,in The equivalent influence coefficient of the guide vane angle on power (unit: kW / °). The equivalent influence coefficient of valve opening on power (unit: kW, i.e., the power change corresponding to each unit change in valve opening, and the change in valve opening). The coefficients are expressed as a dimensionless range of 0 to 1 (corresponding to 0% to 100% opening change), and the two coefficients are determined in advance through a thermal balance calibration test. Equivalent influence coefficient and Preliminary determination was made through a thermal balance calibration test. The specific calibration method is as follows: (a) Calibration Test: Under the condition that the internal temperature of the high-temperature pressure-bearing cylinder 5 is stable at the typical process temperature (e.g., 500℃, 800℃) and the guide vanes of each zone are in a neutral position (deflection angle of 0°), the opening of the micro proportional regulating valve of the i-th zone is adjusted individually, changing it stepwise in 10% increments within the range of 20% to 80% of the rated opening. The representative temperature of the zone after reaching thermal equilibrium and the actual output power of the heating element are recorded at each opening. The temperature-opening sensitivity coefficient of the zone is obtained by linear regression fitting with the valve opening change as the abscissa and the representative temperature change of the zone as the ordinate. This is then combined with the power-temperature steady-state gain of the heating element of the zone. ,according to The equivalent influence coefficient of this partition at the current temperature point is calculated. (b) Calibration test: With the valve opening fixed at 50% of the rated opening, adjust the deflection angle of the adjustable guide vanes between the i-th section and the adjacent section. The temperature was gradually varied in 5° increments within the range of -30° to +30°, and the representative temperature change of the i-th partition after reaching thermal equilibrium at each deflection angle was recorded. Using the deflection angle change as the x-axis and the representative temperature change of the partition as the y-axis, a temperature-angle sensitivity coefficient for that partition within the range of -30° to +30° was obtained through linear regression fitting. This coefficient was then combined with the power-temperature steady-state gain of the heating element in that partition. ,according to The equivalent influence coefficient of this partition at the current temperature point is calculated. (c) Multi-temperature point calibration: Repeat steps (a) and (b) above at typical temperature points such as the middle of the heating stage, the heat preservation stage, and the middle of the cooling stage to obtain the calibration results at different temperature points. and The value is established using piecewise linear interpolation. (T) and The temperature dependence function (T) is used by the zone linkage compensation and thermal support decision module to call the corresponding coefficient value according to the current measured temperature. (d) Regarding those exceeding the linear range Calculation: When the deflection angle of the guide vane exceeds the range of [-30°, +30°], The temperature-angle sensitivity exhibits nonlinearity. In this case, the temperature change data measured at different angles in step (b) should be used, and the results should be calculated through piecewise linear interpolation or table lookup. The interpolation nodes are taken from the data points measured in step (b) at intervals of 5°. 4. Data Output The output of this module is electrically connected to the input of the multi-actuator drive control module, outputting the final power adjustment vector for the entire region. , set of commands for adjusting the angle of the air deflector Set of valve opening correction instructions for each zone .

[0025] The process stage integration module specifically includes: This module receives a synchronization dataset from the multi-source signal synchronous acquisition module. The module combines the pre-stored complete set of process formula data, including heating, holding, and cooling processes, in its local built-in storage unit to determine the current process stage. It then generates target temperature curves matching each heating zone in real time and outputs stage switching flag signals. The specific method for providing process reference parameters for temperature pre-compensation, zoned thermal linkage control, and over-temperature safety monitoring is as follows: 1. Identification of process stages Combined with the current sampling time With the built-in standard timeline of the formula, it automatically determines the current process range of the equipment; In a specific implementation, taking the 800℃ hot isostatic pressing process of a typical metal powder as an example, the typical steps are as follows: Phase 1: Temperature rises to 800℃ during the heating phase; Second stage: 800℃ constant temperature insulation stage; The third stage: cooling down from 800℃ to room temperature; It should be noted that the hot isostatic pressing process temperature varies for different metal powder materials (e.g., aluminum alloys are usually 400~550℃, titanium alloys are 850~950℃, and nickel-based high-temperature alloys can reach 1100~1200℃). The above 800℃ is only an exemplary process parameter. The specific temperature value is determined by the process formula based on the actual processed material and does not constitute a limitation on the process temperature range of this application. 2. Generation of target temperatures for each zone Based on the identified process stage type, the real-time target temperature for each heating zone is generated one by one. ; Taking the linear heating range as an example, the target temperature The generation method is as follows: ; in This is the starting temperature for the partitioning phase. The stage termination temperature, This marks the start of this phase. This is the total duration of this phase; 3. Generation of stage transition flags When sampling time When the preset end time of this stage is reached, or when the absolute value of the deviation between the target temperature of this stage and the average temperature of the measured zone is less than 3°C for M consecutive sampling periods (M=5 recommended, corresponding to a duration M×Δt), and the temperature change rate of each zone is less than 0.5°C / min, the target of the current process stage is determined to be achieved, a stage switching flag is generated, and it is sent to other functional modules to trigger the update of the control parameters of each module. 4. Data Output The output of this module is electrically connected to the inputs of the global pre-compensation calculation module, the zone linkage compensation and thermal support decision module, and the over-temperature safety monitoring module, respectively, and outputs the target temperature curves for each zone. And the current process stage identifier.

[0026] The multi-actuator drive control module specifically includes: This module, as the underlying execution drive unit of the multi-zone gas heating temperature control system, receives the final power adjustment vector from the zone linkage compensation and thermal support decision module. The complete set of control commands, including the guide vane angle adjustment command and the zone valve opening correction command, converts power, valve, guide vane, and intake preheating control parameters into drive signals for each actuator. The control logic for achieving closed-loop precise control of the entire system's thermodynamic unit is as follows: 1. Heating element power control Final power correction for the partition Superimposed on the basic heating power of the zone The target heating power of the zone is obtained. , ; in The base power setting value for the i-th heating zone under the current process stage is pre-set by the process formula based on the zone location, target temperature and historical temperature control data, or the average power of the previous steady-state cycle is used as the base heating power of the current zone in the control cycle iteration. In one specific implementation, the base power setpoint During initial operation, it is necessary to pre-set the power based on the process formula and the rated power of the heating element. After each control cycle, the power should be adjusted based on the average actual power under the current steady-state conditions. Perform slow tracking updates (update rate not exceeding 5% / min of rated power) to adapt to thermal characteristic drift caused by heating element aging and changes in operating conditions; The priority of the two assignment methods is as follows: In the initial stage of process startup (before the start of the heating stage or after stage switching) One control cycle, recommended ), using the pre-stored value of the process formula as The initial reference; After entering the heat preservation stage, if continuously One sampling period (recommended) If the absolute value of the temperature deviation is less than 2℃, the system will automatically switch to the measured average power of the previous steady-state cycle as the baseline. The current value is used to eliminate static deviation; the switching process uses a first-order inertial filtering method to smoothly transition and avoid temperature disturbances caused by sudden changes in base power. By employing phase-shift power regulation or PWM pulse width modulation to drive solid-state relays and thyristor power devices, the duty cycle of the heating element is changed, enabling the actual output power to track and approximate the target power. ; It should be noted that the heating element power regulation and the micro proportional control valve opening regulation can be implemented in various coordinated ways in this embodiment. One optional coordinated method is as follows: heating element power regulation is used as a coarse adjustment means to respond to large temperature deviations; micro proportional control valve opening regulation is used as a fine adjustment means to correct local temperature differences between zones; when the two regulation directions conflict, the micro proportional control valve opening regulation takes priority, and the heating element power is adjusted accordingly to ensure that the total heating power and the total gas flow remain matched. The above priority control method is only an illustrative example and does not constitute a limitation on the technical solution of this application. Those skilled in the art can select other suitable coordinated regulation strategies according to actual working conditions and control requirements. 2. Miniature proportional control valve Correction amount based on valve opening It outputs a 4~20mA standard analog signal or digital pulse signal to drive the valve actuator and adjust the actual opening position of the valve core; Synchronously acquire valve position feedback signals to form a closed-loop verification, eliminating steady-state deviation of valve opening; 3. Adjustable air deflector control According to the cross-section guide angle instruction Drive the matching stepper motor or servo motor to rotate the guide vane precisely to the set deflection angle, and complete the hot airflow guidance and adjustment in the furnace. 4. Intake preheater control Compare the measured intake air temperature of the main intake pipe With the target intake temperature The output power of the pipeline preheater is dynamically adjusted according to the temperature difference to stabilize the initial temperature of the gas intake. 5. Data Output The module's drive signal output terminal is electrically connected to the power regulators of each heating element, the drive motors of each zone's micro proportional control valve, the servo / stepper drive motors of each adjustable guide vane, and the intake preheater controller, respectively, and outputs drive control signals corresponding to various actuators.

[0027] The over-temperature safety monitoring module specifically includes: This module synchronously receives the synchronous dataset from the multi-source signal synchronous acquisition module. The process stage identifier issued by the process stage integration module, relying on dual-channel temperature sensors, completes the determination of zoned temperature over-limit and sensor data redundancy verification, and outputs over-temperature protection action commands and fault alarm information in a graded manner, realizing the following method of overheat safety interlock protection for heating equipment: 1. Zone over-temperature determination For each heating zone i, the zone represents the temperature. The maximum safe temperature corresponding to the process stage and safety specifications of this zone. Perform a comparison; If satisfied Immediately trigger the zone over-temperature alarm signal; 2. Temperature measurement redundancy check Temperature values ​​measured by thermocouples in different zones With fiber optic grating temperature measurement data within the area Conduct consistency checks; when the difference between two types of temperature measurement data exceeds the temperature difference judgment threshold. (Typical value 10℃) If the temperature sensor is deemed to be malfunctioning, a sensor fault alarm will be output. 3. Tiered Emergency Response Logic Level 1 Over-temperature Condition: When the zone represents the temperature satisfy Time (of which) For a first-level temperature safety margin, a value of 10℃ is recommended. The system implements a mild temperature control protection strategy: cuts off the heating output power of the current over-temperature zone to 0, adjusts the deflection angle of the adjustable guide vanes in the adjacent heating zone, and removes the local excess heat through the diversion of the medium airflow. Level 2 Over-temperature Condition: When the zone represents the temperature When the measured temperature exceeds the upper limit of the first-level safety margin, the system triggers the emergency interlock protection of the whole machine: disconnects the power supply circuit of all heating zones, closes the main gas inlet valve, and activates the on-site audible and visual alarm device. in As a first-level temperature safety margin, a value of 10℃ is recommended; The safety threshold for Level 2 over-temperature conditions is as follows: To determine the boundary, there is no need to set a second temperature margin. To avoid protection blind spots between grade boundaries; Alternatively, if the expression of the secondary temperature safety margin needs to be retained, the secondary over-temperature condition can be defined as follows: Triggered at time, where At the same time, the upper limit for determining the first-level over-temperature condition was modified to... And clearly stipulate that when In During the interval, a first-level over-temperature protection strategy is implemented to ensure that the two-level protection fully covers all possible over-temperature conditions without leaving any protection blind spots.

[0028] 4. Data Output The output of this module is electrically connected to the input of the multi-actuator drive control module and the data communication interaction module, respectively. It sends emergency stop, power reduction, and valve closure protection commands to the multi-actuator drive control module, and pushes various alarm messages such as over-temperature and sensor abnormality to the data communication interaction module.

[0029] The data communication interaction module specifically includes: This module serves as the data interaction hub between the local unit of the multi-zone heating temperature control system and the host computer, cloud platform, and factory MES system. It is electrically connected to the output terminals of the multi-source signal synchronous acquisition module and the over-temperature safety monitoring module, respectively. It receives real-time multi-source data collected by the equipment, as well as various over-temperature and sensor fault alarm information. It completes the standardized processing and uploading of on-site data and safety alarm information, and simultaneously parses and sends remote configuration commands to the corresponding control modules. The specific communication logic for achieving bidirectional data exchange between the local equipment and the upper-level platform is as follows: 1. Data compression and encapsulation Perform downsampling or key feature extraction on the massive raw temperature data collected at high frequency. For example, store core indicators such as the average temperature of each zone and the maximum temperature difference across the entire region at fixed intervals. Encapsulate the processed data into standardized industrial transmission data packets such as ModbusTCP, OPCUA, and MQTTJSON. 2. Multi-protocol adaptation and compatibility It has built-in parsing stacks for multiple mainstream industrial communication protocols, and is compatible with different upper-level management platforms such as upper-level monitoring terminals, cloud servers, and factory MES manufacturing execution systems, enabling cross-device and cross-platform data interoperability and interaction. 3. Remote configuration command forwarding Remote configuration command forwarding: Parse remote operation commands issued by the host computer and cloud platform, including process recipe updates, control threshold and PID parameter modifications, and forward valid commands to the process stage fusion module and global pre-compensation calculation module to complete parameter updates; 4. Data Output The output of this module is electrically connected to the wired Ethernet interface and the wireless communication module, sending uplink data streams of device status; at the same time, it keeps the downlink communication link in a listening state to continuously receive remote configuration, parameter adjustment and process switching instructions from the upper-layer platform; after receiving downlink instructions, they are processed by the logic described in item 3 for parsing and forwarding.

[0030] This embodiment requires further explanation: the electrical control box 9 can be built using a PLC programmable logic controller with expansion modules, or an embedded industrial real-time controller (such as a real-time control unit based on an ARM Cortex-R core) can be selected to implement the overall machine control logic. Thermocouples, fiber optic temperature sensors, miniature proportional control valves, adjustable guide vanes, preheaters, and other hardware are all standardized and mature industrial components.

[0031] All algorithm parameters and control thresholds in this scheme, including but not limited to: PID control proportional coefficients for each zone. Integral coefficient Feedforward coefficient Lag time Temperature gradient threshold Temperature difference control dead zone Zone safety temperature limit Multi-sensor consistency deviation threshold All of these require comprehensive calibration and optimization, taking into account the actual structural dimensions of the high-temperature pressure-bearing cylinder 5, the rated power of the heating elements, the physical properties of the internal process gas medium, production process indicators, and industry safety standards. This involves thermal field simulation analysis, system identification tests, multiple rounds of process trial production, and safety risk assessments. The above parameter tuning is an indispensable engineering implementation step for implementing this invention and achieving uniform high-temperature heating within the cylinder. It is a conventional process adaptation task that can be independently completed by those skilled in the art, and this embodiment does not provide unique fixed values ​​for each parameter.

[0032] This invention relies on the quantitative calculation of each functional module and the closed-loop collaborative control of multiple actuators to achieve precise temperature control of multiple heating zones, cross-zone thermal balance compensation, multi-level over-temperature safety protection and remote status monitoring of hot isostatic pressing equipment. It effectively improves the uniformity of the internal temperature field during the sintering and forming process of metal powder, and greatly enhances the consistency of powder processing products and the overall quality of the products.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hot isostatic pressing (HIP) equipment and system for processing metal powder with uniform heating at high temperature, including a frame (3), characterized in that: Vertical guide sliders (8) are provided on both sides inside the equipment frame (3). A pressure transmission screw (2) is installed in the middle of the equipment frame (3), and the top end of the pressure transmission screw (2) extends out of the top of the equipment frame (3). A handwheel pressure assembly (1) is fixedly installed at the top end of the pressure transmission screw (2). An upper pressure plate (4) is provided at the end of the pressure transmission screw (2) away from the handwheel pressure assembly (1). The equipment frame (3) is provided with a cylindrical support base (6) in the middle. A high-temperature pressure-bearing cylinder (5) is placed on the surface of the cylindrical support base (6). The interior of the high-temperature pressure-bearing cylinder (5) is divided into multiple independent heating zones along the height direction. Each independent heating zone is provided with an independent heating element, a micro flow guide nozzle and a micro proportional regulating valve. The inner wall of the high-temperature pressure-bearing cylinder (5) is provided with thermocouples and fiber optic temperature sensors corresponding to the positions of each independent heating zone for real-time monitoring of the temperature of the zone. The high-temperature pressure-bearing cylinder (5) is provided with adjustable guide vanes between adjacent independent heating zones to guide the airflow to deflect in the adjacent zone; An auxiliary lifting assembly (7) is installed at the bottom of the equipment frame (3), and the output end of the auxiliary lifting assembly (7) is connected to the cylinder support base (6). The equipment frame (3) is connected to an electrical control box (9) via cables. The electrical control box (9) is connected to the thermocouples, fiber optic grating temperature sensors, valve position feedback sensors of the miniature proportional control valves, inlet temperature sensors and inlet pressure sensors of the main air intake pipes of each independent heating zone, and is electrically connected to the heating elements, miniature proportional control valves, adjustable guide vanes and preheaters of the main air intake pipes of each independent heating zone.

2. The hot isostatic pressing equipment and system for processing metal powder with high-temperature uniform heating according to claim 1, characterized in that: The electrical control box (9) integrates a multi-zone thermal collaborative control system, which includes a multi-source signal synchronous acquisition module, a global pre-compensation calculation module, a zone linkage compensation and thermal support decision module, a process stage fusion module, a multi-actuator drive control module, an over-temperature safety monitoring module, and a data communication interaction module.

3. The hot isostatic pressing equipment and system for processing metal powder with high-temperature uniform heating according to claim 2, characterized in that: The acquisition and preprocessing method of the multi-source signal synchronous acquisition module is as follows: The first input terminal group is formed by thermocouples in each independent heating zone to collect real-time temperature signals of each heating zone. The second input terminal group is formed by fiber optic grating temperature sensors in each independent heating zone to collect distributed temperature data at multiple points in the heating zone. The third input terminal group is formed by the valve position feedback sensor matched with the miniature proportional control valve of each independent heating zone to collect the real-time actual opening signal of each valve. The fourth input terminal group is formed by the main intake pipe inlet temperature sensor to collect the gas intake temperature. The fifth input terminal group is formed by the pressure sensor at the inlet of the main intake pipe to collect the gas intake pressure. Cold junction compensation and temperature linearization correction are performed on the thermocouple acquisition signal; wavelength demodulation is performed on the original fiber optic signal and it is mapped and converted into the corresponding temperature value; analog-to-digital conversion is performed on the valve position feedback analog signal, and the 4~20mA current signal is converted into the valve opening value of 0~100% according to the linear mapping relationship; By relying on the high-precision clock reference built into the electrical control box, all sensor data collected at the same sampling time are uniformly marked with time sequence timestamps, so as to achieve precise time sequence alignment of multi-dimensional sensor signals. The full-dimensional sensor data that has been conditioned and synchronized with time sequence will be integrated and packaged to build a unified and synchronized multi-source dataset; The output terminals are electrically connected to the input terminals of the global pre-compensation calculation module, the zone linkage compensation and thermal support decision module, the process stage fusion module, the over-temperature safety monitoring module, and the data communication interaction module, respectively, and output standardized synchronous datasets in real time.

4. The hot isostatic pressing equipment and system for processing metal powder with high-temperature uniform heating according to claim 2, characterized in that: The pre-compensation processing method of the global pre-compensation calculation module is as follows: Read the target temperature curve for the current process stage issued by the process stage fusion module; For each heating zone, the average or maximum value of all fiber grating temperature measurement data in the zone is taken as the representative temperature of the zone, and then the zone temperature deviation is obtained. This deviation is the target temperature minus the representative temperature of the zone. Combining the thermal inertia and lag time constant of each zone, the predictive control concept is adopted, and the pre-compensation power increment is solved by using the historical deviation sequence and the transfer function model obtained by system identification. The pre-compensation power increment obtained from the solution is used as the initial power adjustment reference value for each heating zone; The output of this module is electrically connected to the input of the zone linkage compensation and thermal support decision module, and outputs the pre-compensation power increment vector for the entire zone.

5. The hot isostatic pressing equipment and system for high-temperature uniform heating of metal powder processing according to claim 2, characterized in that: The control method of the partition linkage compensation and thermal support decision module is as follows: Receive the synchronization dataset output from the multi-source signal synchronization acquisition module and the pre-compensation power increment vector output from the global pre-compensation calculation module; For adjacent heating zones, calculate the representative temperature difference between the two zones; if the absolute value of the temperature difference is greater than the preset temperature gradient judgment threshold, it is determined that there is a risk of local temperature unevenness in the furnace. When one zone is underheated and the adjacent zone is overheated, the thermal support control logic from the high temperature zone to the low temperature zone is executed: the angle of the adjustable guide vane between the two zones is adjusted so that the guide structure deflects towards the low temperature zone. Simultaneously reduce the opening of the micro proportional regulating valve in the high-temperature zone, while increasing the valve opening in the low-temperature zone; Based on the initial pre-compensation power increment, a thermal support power correction term caused by the adjustment of the guide vane and valve opening is superimposed to solve for the final power adjustment of the partition. The output of this module is electrically connected to the input of the multi-actuator drive control module, and outputs the final power adjustment vector of the entire area, the set of guide vane angle control commands, and the set of valve opening correction commands for each zone.

6. The hot isostatic pressing equipment and system for processing metal powder with high-temperature uniform heating according to claim 2, characterized in that: The process stage fusion module identifies the stage and generates the target temperature in the following ways: It receives the synchronous dataset from the multi-source signal synchronous acquisition module, and combines it with the complete set of process formula data containing heating, heat preservation and cooling processes pre-stored in the module's local built-in storage unit to automatically determine the current process range of the equipment. Based on the identified process stage type, the real-time target temperature of each heating zone is generated one by one; When the sampling time reaches the preset end time of this stage or the measured temperature reaches the stage switching judgment condition, a stage switching identifier is generated and sent to the other functional modules to trigger the update of the control parameters of each module. The output of this module is electrically connected to the input of the global pre-compensation calculation module, the zone linkage compensation and thermal support decision module, and the over-temperature safety monitoring module, respectively, and outputs the target temperature curve of each zone and the current process stage indicator.

7. The hot isostatic pressing equipment and system for processing metal powder with high-temperature uniform heating according to claim 2, characterized in that: The safety monitoring method of the over-temperature safety monitoring module is as follows: The synchronous data set of the multi-source signal synchronous acquisition module and the process stage identifier issued by the process stage fusion module are received simultaneously. For each heating zone, the zone's representative temperature is compared with the maximum safe temperature specified by the safety regulations for the corresponding process stage. If the temperature represented by a zone exceeds the maximum safe temperature, an over-temperature alarm signal for that zone will be triggered immediately. Consistency verification is performed between the temperature measurement values ​​of the thermocouples in the zone and the temperature measurement data of the fiber optic grating in the zone. When the difference between the two types of temperature measurement data exceeds the preset temperature difference judgment threshold, the temperature sensor is judged to be faulty and a sensor fault alarm is output. Level 1 Over-temperature condition: The measured temperature exceeds the safety limit but does not exceed the maximum safe temperature plus the preset first temperature margin. A mild protection strategy is implemented, which reduces the heating power of the current over-temperature zone to zero and adjusts the deflection angle of the guide vanes in the adjacent zone to divert and remove local excess heat. Level 2 Over-temperature condition: When the measured temperature exceeds the maximum safe temperature plus the preset second temperature margin, the whole machine emergency interlock protection is executed, that is, the power supply circuit of all heating zones is cut off, the main gas inlet valve is closed, and the on-site audible and visual alarm device is activated simultaneously. The output of this module is electrically connected to the input of the multi-actuator drive control module and the data communication interaction module, respectively. It sends emergency stop, power reduction, and valve closure protection commands to the multi-actuator drive control module, and pushes over-temperature and sensor abnormality alarm messages to the data communication interaction module.

8. The hot isostatic pressing equipment and system for processing metal powder with high-temperature uniform heating according to claim 2, characterized in that: The communication interaction method of the data communication interaction module is as follows: It is electrically connected to the output terminals of the multi-source signal synchronous acquisition module and the over-temperature safety monitoring module respectively, and receives multi-source data and various over-temperature and sensor fault alarm information collected in real time by the equipment; Perform downsampling or key feature extraction on the massive raw temperature data collected at high frequency, and encapsulate the processed data into standardized industrial transmission data packets; It has built-in parsing stacks for multiple mainstream industrial communication protocols, and is compatible with upper-level monitoring terminals, cloud servers and factory manufacturing execution systems to achieve cross-device and cross-platform data interoperability. Parse remote operation commands issued by the host computer or cloud platform, including process formula updates, control thresholds and parameter modifications, and forward valid commands to the process stage fusion module and the global pre-compensation calculation module to complete parameter updates; The output of this module is electrically connected to a wired Ethernet interface and a wireless communication module, sending uplink data streams of device status to the outside world; at the same time, it establishes a downlink communication link to continuously receive remote configuration, parameter adjustment and process switching control commands issued by the upper-level platform; The wired Ethernet interface serves as the primary communication channel, while the wireless communication module acts as a backup channel. When the wired network is interrupted, the system automatically switches to the wireless communication link to ensure that device status data is not lost.

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