Digital data processing system for the operating status of a corrugation line

Abstract

The present application belongs to the field of electric digital data processing, and relates to a kind of digital data processing system of corrugated production line operating state, comprising: data acquisition unit, feature storage unit, offset solving unit and parameter compensation unit, data acquisition unit obtains the heterogeneous time sequence data stream of controlled node;Feature storage unit carries out dimensional alignment in digital storage space to construct historical delay feature matrix;Offset solving unit calculates addressing address increment according to the correlation mapping relationship between reference feature and auxiliary feature;Parameter compensation unit carries out logical shift to read pointer according to addressing address increment, points to the historical state slice with correlation, and outputs the feedforward compensation control parameter for hedging response delay, the present application eliminates causal drift generated by flexible medium transmission through asynchronous addressing mechanism of digital storage space, realizes accurate matching of control parameter time sequence and mechanical response phase, and guarantees tension stability under high-speed operating state.

Description

Technical Field

[0001] This invention belongs to the field of electronic digital data processing technology, and in particular relates to a digital data processing system for the operating status of a corrugated production line. Background Technology

[0002] In the current operation of the corrugated production line, it is necessary to concurrently collect and process the status data of multiple transmission nodes. The existing system adopts an absolute timestamp synchronization mechanism based on a global clock, which assumes that the data collected at the same time have a strong correlation in physical causality and uses this as the addressing reference for constructing the state feature matrix. As a flexible thermoplastic medium, corrugated cardboard exhibits non-stationary slippage and stress hysteresis when transferred between multiple rollers. This medium deformation causes the transmission time of feature perturbations between nodes to exhibit time-varying characteristics. Simply relying on the data array extracted by absolute timestamps will produce deviations in the underlying physical causality. Loading such data streams with causal drift into the computing unit will fail to extract transient distortion features and will generate digital noise in the data fusion process.

[0003] Under high-speed operating conditions, the propagation speed of physical disturbances evolves dynamically. Increasing the sampling frequency or processor frequency cannot eliminate invalid data pairing caused by physical lag deviation. At this time, the time phase of the adjustment instruction set generated by the system deviates from the demand point of the actuator, resulting in a mismatch between the calculation result and the physical execution state. At the algorithm architecture level, existing technologies have limitations in high-frequency multi-source data stream alignment schemes. For example, Chinese invention patent application with publication number CN121722209A discloses a multi-source data timing synchronization method and system for magnetic drive rotor twin control. The technology is based on the IEEE1588 protocol and linear interpolation to eliminate random delays caused by network communication links and protocol stacks. The premise is that the sampling reference of the acquisition end and the processing end are forcibly consistent through the clock protocol, and the evolution of physical variables is linear within a microsecond window.

[0004] Therefore, how to reconstruct the addressing mechanism of data streams so that the access logic of digital storage space matches the physical causal chain is the technical problem to be solved by this invention. Summary of the Invention

[0005] The present invention aims to solve the problem of phase misalignment of adjustment commands caused by causal misalignment of data stream due to slippage of flexible media.

[0006] In this technical solution, a digital data processing system for the operating status of a corrugated production line is provided, the system comprising: The data acquisition unit is used to acquire multi-source heterogeneous time-series data streams that characterize the operating status of controlled nodes in the corrugated production line; wherein, the data acquisition unit is connected to the feature storage unit, the feature storage unit is connected to the offset calculation unit, and the offset calculation unit is connected to the parameter compensation unit. The feature storage unit is used to perform dimension alignment on multi-source heterogeneous time-series data streams within the digital storage space to construct a historical delay feature matrix containing time-series distribution features; The offset calculation unit is used to calculate the address offset as the address increment in the digital storage space based on the correlation mapping relationship between the upstream reference features and the downstream auxiliary features in the historical delay feature matrix, so as to characterize the response delay level. The parameter compensation unit is used to perform logical shifting of the reference read pointer of the historical delay feature matrix according to the address offset, so that the reference read pointer is pointed to the historical state slice that is related to the current processing phase of the multi-source heterogeneous timing data stream, and outputs feedforward compensation control parameters to offset the response delay based on the historical state slice, so that the logical timing of the data frame of the feedforward compensation control parameters is ahead of the mechanical response phase of the controlled node.

[0007] Preferably, the multi-source heterogeneous time-series data stream acquired by the data acquisition unit includes: rotational speed data characterizing the driving frequency operating state, pressure values ​​characterizing the medium tension fluctuation, and current characteristic quantities characterizing the load change of the driving frequency actuator; the data acquisition unit is also used to perform normalization processing to map the original signals of different dimensions to a dimensionless numerical space between 0 and 1.

[0008] Preferably, the feature storage unit constructs the historical delay feature matrix through the following steps: Step S31, determine the addressing step size according to the preset maximum response delay, and open a circular buffer in the digital storage space; Step S32, push the feature vectors input by the data acquisition unit in real time into the circular buffer in time sequence; Step S33, extract the feature vectors of adjacent sampling periods in the circular buffer and perform tensor product operation to generate the historical delay feature matrix.

[0009] Preferably, the offset calculation unit includes a signal filtering subunit; the signal filtering subunit is used to perform frequency domain transformation on the historical time delay feature matrix to remove high-frequency noise features in multi-source heterogeneous time-series data streams and improve the extraction accuracy of address offset.

[0010] Preferably, the parameter compensation unit internally stores address offset mapping logic; the address offset mapping logic is used to convert the address offset into a deterministic address increment in the digital storage space, and to complete the logical offset of response delay by modifying the memory address.

[0011] Preferably, the system further includes a residual verification unit; the residual verification unit is connected to the parameter compensation unit and is used to calculate the state residual value after the feedforward compensation control parameter is output; when the state residual value exceeds the preset 5% safety threshold, the residual verification unit outputs a blocking signal to block the output channel of the parameter compensation unit, so that the system retreats to the steady-state maintenance mode.

[0012] Preferably, when performing dynamic addressing updates, the offset calculation unit is specifically used to: extract the reference feature from the historical delay feature matrix, and determine the target feature slice whose correlation coefficient with the reference feature reaches a preset peak value through sliding correlation retrieval in the circular buffer, and determine the addressing depth of the target feature slice in the circular buffer as the addressing offset.

[0013] Preferably, the system further includes a gain adjustment unit; the gain adjustment unit is used to dynamically adjust the output gain value of the feedforward compensation control parameters according to the current operating frequency; when the current operating frequency increases, the gain adjustment unit synchronously increases the calculation weight of the feedforward compensation control parameters.

[0014] Preferably, the parameter compensation unit is also used to perform asynchronous addressing operations; asynchronous addressing operations refer to the logical shifting of the memory address in the feature storage unit while keeping the hardware sampling frequency constant, so that the data frame logic timing of the feedforward compensation control parameters is ahead of the mechanical response phase of the controlled node, in order to offset the stress hysteresis caused by the slippage of the medium in the corrugated production line.

[0015] Compared with existing technologies, the digital data processing system for the corrugated production line operation status of the present invention has the following advantages: Firstly, in the digital data processing of the corrugated production line, a sliding data buffer is constructed in the memory to achieve real-time caching of the baseline physical feature data stream and the auxiliary displacement feature data stream. The cross-correlation operation of the two sets of sequences is used to locate the index difference scalar corresponding to the global extremum, thereby quantizing the nonlinear slip at the physical level into a discrete sequence offset in the digital domain. This mechanism abandons the traditional absolute timestamp alignment method and reshapes the physical causal chain between multi-source data streams at the data processing end, eliminating the causal drift introduced by the deformation of the flexible medium. Since the starting point of feature vector extraction is dynamically defined by the cross-correlation extremum, the system can always extract feature slices that are aligned with the current disturbance logic in the data fusion stage, fundamentally eliminating the computational illusions and digital noise caused by spatiotemporal mismatch, and providing a pure data foundation for subsequent high-dimensional matrix operations.

[0016] Secondly, the reference read pointer of the feedforward compensation processing unit is dynamically updated by the index difference scalar output by the state deviation calculation unit, so that the reading operation of the historical lag feature matrix is ​​presented as an asynchronous addressing process based on causal relationship. This memory address offset mapping logic transforms the complex physical transmission lag into a deterministic address increment in the digital storage space. Since the generation of the advance adjustment instruction set directly depends on the precise pointer pointing to the historical state slice, the system can offset the execution lag of the physical space through the pre-rehearsal and misalignment distribution at the data reading level without changing the hardware communication frequency. This method of purely relying on the reorganization of digital addressing logic ensures that the time phase of the system instruction is highly consistent with the demand point of the physical execution mechanism, effectively avoiding tension fluctuations caused by computational lag.

[0017] Third, it integrates bandpass filtering logic, historical lag feature matrix decoupling, and adaptive forgetting factor residual verification mechanism to form a multi-dimensional digital signal purification and risk hedging system. The bandpass filtering logic removes the inherent mechanical vibration frequency noise mixed in the reference data stream through frequency domain transformation, improving the extraction purity of transient feature vectors. At the same time, the residual verification mechanism evaluates the prediction error in real time. When the network delay jitter exceeds the preset threshold, it automatically decays the compensation weight, allowing the system to retreat to the steady-state maintenance logic. This deep coupling of multiple mechanisms not only solves the interference of physical noise on feature decoupling, but also enhances the system's stability against the complex electromagnetic environment and network fluctuations in the industrial field by utilizing the algorithm self-discipline of the data layer, ensuring the continuity and stability of global data flow under non-ideal working conditions. Attached Figure Description

[0018] Figure 1 This invention relates to a flowchart of asynchronous addressing and correction logic for corrugated production line data; Figure 2 This invention relates to a system architecture diagram of integrated security verification and adaptive adjustment. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0020] It should be noted that all directional and positional terms used in this invention, such as: up, down, left, right, front, back, vertical, horizontal, inner, outer, top, bottom, transverse, longitudinal, center, etc., are only used to explain the relative positional relationship and connection between components in a specific state (as shown in the accompanying drawings). They are only for the convenience of describing this invention and do not require that this invention be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention. In addition, the descriptions of "first," "second," etc., in this invention are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0021] In the description of this invention, unless otherwise explicitly specified and limited, the terms installation, connection, and linking should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0022] In the description of this specification, references to the terms "an embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example, and the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0023] A digital data processing system for the operating status of a corrugated production line, the system comprising: The data acquisition unit is used to acquire multi-source heterogeneous time-series data streams that characterize the operating status of controlled nodes in the corrugated production line; wherein, the data acquisition unit is connected to the feature storage unit, the feature storage unit is connected to the offset calculation unit, and the offset calculation unit is connected to the parameter compensation unit. The feature storage unit is used to perform dimension alignment on multi-source heterogeneous time-series data streams within the digital storage space to construct a historical delay feature matrix containing time-series distribution features; The offset calculation unit is used to calculate the address offset as the address increment in the digital storage space based on the correlation mapping relationship between the upstream reference features and the downstream auxiliary features in the historical delay feature matrix, so as to characterize the response delay level. The parameter compensation unit is used to perform logical shifting of the reference read pointer of the historical delay feature matrix according to the address offset, so that the reference read pointer is pointed to the historical state slice that is related to the current processing phase of the multi-source heterogeneous timing data stream, and outputs feedforward compensation control parameters to offset the response delay based on the historical state slice, so that the logical timing of the data frame of the feedforward compensation control parameters is ahead of the mechanical response phase of the controlled node.

[0024] Preferably, the multi-source heterogeneous time-series data stream acquired by the data acquisition unit includes: rotational speed data characterizing the driving frequency operating state, pressure values ​​characterizing the medium tension fluctuation, and current characteristic quantities characterizing the load change of the driving frequency actuator; the data acquisition unit is also used to perform normalization processing to map the original signals of different dimensions to a dimensionless numerical space between 0 and 1.

[0025] Preferably, the feature storage unit constructs the historical delay feature matrix through the following steps: Step S31: Determine the addressing step size according to the preset maximum response delay, and open a circular buffer in the digital storage space; Step S32: Push the feature vectors input in real time by the data acquisition unit into the circular buffer in time sequence; Step S33: Extract the feature vectors of adjacent sampling periods in the circular buffer and perform tensor product operation to generate the historical delay feature matrix.

[0026] Preferably, the offset calculation unit includes a signal filtering subunit; the signal filtering subunit is used to perform frequency domain transformation on the historical time delay feature matrix to remove high-frequency noise features in multi-source heterogeneous time-series data streams and improve the extraction accuracy of address offset.

[0027] Preferably, the parameter compensation unit internally stores address offset mapping logic; the address offset mapping logic is used to convert the address offset into a deterministic address increment in the digital storage space, and to complete the logical offset of response delay by modifying the memory address.

[0028] Preferably, the system further includes a residual verification unit; the residual verification unit is connected to the parameter compensation unit and is used to calculate the state residual value after the feedforward compensation control parameter is output; when the state residual value exceeds the preset 5% safety threshold, the residual verification unit outputs a blocking signal to block the output channel of the parameter compensation unit, so that the system retreats to the steady-state maintenance mode.

[0029] Preferably, when performing dynamic addressing updates, the offset calculation unit is specifically used to: extract the reference feature from the historical delay feature matrix, and determine the target feature slice whose correlation coefficient with the reference feature reaches a preset peak value through sliding correlation retrieval in the circular buffer, and determine the addressing depth of the target feature slice in the circular buffer as the addressing offset.

[0030] Preferably, the system further includes a gain adjustment unit; the gain adjustment unit is used to dynamically adjust the output gain value of the feedforward compensation control parameters according to the current operating frequency; when the current operating frequency increases, the gain adjustment unit synchronously increases the calculation weight of the feedforward compensation control parameters.

[0031] Preferably, the parameter compensation unit is also used to perform asynchronous addressing operations; asynchronous addressing operations refer to the logical shifting of the memory address in the feature storage unit while keeping the hardware sampling frequency constant, so that the data frame logic timing of the feedforward compensation control parameters is ahead of the mechanical response phase of the controlled node, in order to offset the stress hysteresis caused by the slippage of the medium in the corrugated production line.

[0032] Example 1: In a high-speed, multi-stage continuous manufacturing scenario of corrugated cardboard using rollers, the data acquisition unit acquires multi-source heterogeneous time-series data streams characterizing the operating status of controlled nodes in the corrugated production line. The corrugated production line faces a physical causal drift caused by non-stationary slippage of the flexible thermoplastic medium. Specifically, the absolute timestamp synchronization mechanism based on the global clock forcibly aligns the baseline physical characteristic data stream of the upstream main drive node with the auxiliary displacement characteristic data stream of the downstream acquisition node, resulting in time-varying misalignment of the cross-sectional data at the underlying physical causality. When such misaligned data streams with underlying causal drift are loaded into the computation unit, the computation matrix cannot extract transient distortion features. Instead, it excites accompanying digital noise in the data fusion stage, making the conventional data processing architecture based on static time domain alignment unable to match the non-stationary time-varying characteristics of physical disturbance transmission time, resulting in a mismatch between the calculation results and the physical execution state.

[0033] The feature storage unit determines the addressing step size based on the preset maximum response delay and opens a circular buffer in the digital storage space. The feature vectors input by the data acquisition unit are pushed into the circular buffer in time sequence to align multi-dimensional features and generate a historical delay feature matrix containing time-series distribution features. The offset calculation unit extracts the upstream reference features from the historical delay feature matrix, constructs a sliding detection window in the circular buffer to calculate the cross-correlation function between the reference features and the downstream auxiliary features, and generates a discrete cross-correlation function sequence. The global maximum correlation coefficient is extracted by comparing each calculation node in the sequence through the optimization judgment logic. The discrete sequence index difference scalar corresponding to the extreme value is locked and determined as the addressing offset. This processing mechanism does not require forced alignment of data on the static time axis. Instead, it uses cross-correlation operation to obtain the physical correlation between data sequences, solves the physical conflict between the high-frequency rigid sampling clock and the nonlinear transmission hysteresis of the flexible medium, and generates a synergistic effect of causal correction and feature decoupling of heterogeneous time-series data streams.

[0034] The parameter compensation unit converts the address offset into a deterministic address increment within the digital storage space based on the internally stored address offset mapping logic. It then applies a logical shift to the reference read pointer of the historical delay feature matrix according to this deterministic address increment, pointing the reference read pointer to the historical state slice that has the highest correlation with the current processing phase of the multi-source heterogeneous time-series data stream. Based on this historical state slice, the parameter compensation unit outputs feedforward compensation control parameters to offset response delay. This causes the logical timing of the feedforward compensation control parameters' data frame to lead the mechanical response phase of the controlled node. While maintaining a constant hardware communication frequency, the system relies on the digital storage space address offset and asynchronous addressing mechanism to convert physical transmission hysteresis into a deterministic digital storage space pointer offset, thus offsetting the response delay of the flexible interferometer. The stress hysteresis caused by material slippage maintains the tension stability of the corrugated production line. The feedforward compensation control parameters are expressed in the control link as additional torque bias commands input to the lower-level servo drive. The parameter compensation unit extracts the speed perturbation in the historical state slice, multiplies it by the pre-calibrated rotational inertia constant of the controlled node, converts it into additional torque bias commands, and writes them into the torque feedforward register of the servo drive through the field data bus. After receiving the value, the torque feedforward register superimposes the corresponding feedforward current on the basic current command of the drive motor, forcing the actual output torque of the motor to generate pulsating advance, offsetting the stress hysteresis caused by the slippage of the flexible medium. In essence, it uses the phase advance action of the drive motor to compensate for the time lag difference generated in the material transfer link in advance, maintaining the mechanical dynamic balance at both ends of winding and unwinding.

[0035] Example 2: The current corrugated production line's multi-stage transmission status data processing features strong electromagnetic interference and high-frequency stress hysteresis coupling. The test platform includes a flexible media conveying test line driven by three independent servo motors, equipped with an encoder with a sampling rate of 10kHz and a thin-film piezoresistive tension sensor with a response time of less than 1ms. The original signal source of the test environment is superimposed with Gaussian white noise with a signal-to-noise ratio of 20dB and power frequency harmonic interference with a frequency of 50Hz. The feature storage unit sets the addressing step size, which is determined based on the correlation between the data acquisition resolution and the concurrent processing load of the computing unit. The judgment model defines that when the frequency bandwidth of the multi-source heterogeneous time-series data stream widens and the slip rate of the physical medium is greater than the preset critical value, the addressing step size tends to the lower limit. According to this correspondence, under the typical working condition where the medium traction line speed is set to 300m / min and the slip fluctuation rate is 3.0%, the addressing step size is calculated to be 2ms. This addressing step size is adapted to the phase accuracy and the convergence time of the cross-correlation function when extracting the historical time delay feature matrix.

[0036] The experiment established a control system and a problem intensity gradient model, selecting the traction slip ratio of the flexible medium as the core variable characterizing the intensity of physical causal drift, set at gradient states of 1.5%, 3.0%, and 5.0%, respectively. In a laboratory verification scenario, to quantitatively assess the system's ability to suppress disturbances of different intensities, an adjustable magnetic powder brake load was applied to the unwinding end of the controlled node to artificially simulate and generate the non-stationary slip ratio of the aforementioned gradient distribution. This was used as a controlled independent experimental variable input. At this time, the system did not directly rely on this set value for calculation, but instead captured the heterogeneous time-series data fluctuations induced by the simulated load through the data acquisition unit. This allowed for testing the accuracy of the offset calculation unit in capturing address offsets and its convergence effect on tension fluctuations under complex physical causal drift environments. The control system included control group one, control group two, and the sample group of this invention. Control group one used an absolute timestamp synchronization mechanism and did not... A logical shift is applied to the read pointer; control group 2 sets an addressing step size of 50ms to represent states exceeding the range of 2ms to 10ms; the sample group of this invention uses an addressing step size of 2ms and applies asynchronous addressing correction logic based on the maximum correlation coefficient. The control system operates under a 3.0% slip rate condition. The data acquisition unit collects raw time-series data containing time delay misalignment. The Pearson correlation coefficient between the baseline feature and auxiliary feature extracted from control group 1 without correction is 0.42, indicating that the data frame has a physical time sequence discontinuity. The offset calculation unit of the sample group of this invention constructs a sliding detection window in the circular buffer to calculate the cross-correlation sequence. The output discrete sequence shows an energy mutation at the node with an index difference of 18. The global maximum correlation coefficient corresponding to the extreme point is extracted to be 0.94. Based on this, the addressing offset is determined to be 36ms. The offset calculation unit converts the physical lag features in white noise into digital indicators and decouples the misaligned data features.

[0037] The parameter compensation unit reads the pointer based on the 36ms address offset logic shift reference, outputs the feedforward compensation control parameters, and simultaneously measures the final tension fluctuation rate of each test group. At a slip rate of 1.5%, the tension fluctuation rate of the present invention's sample group is 1.8%, while that of control group one is 4.5%. When the slip rate increases to 5.0%, the tension fluctuation rate of control group one increases to 14.2%, and the system experiences resonance instability. The tension fluctuation rate of the present invention's sample group remains at 2.3%, and the increase in physical disturbance intensity does not disrupt the response logic closed loop of this scheme. Observation of the data evolution trajectory of control group two shows that when the address step size increases from 2ms to 50ms, Because the timing resolution is lower than the physical disturbance characteristic period, the output accuracy of the feedforward compensation control parameters shows a nonlinear decrease, and the tension fluctuation rate increases to 11.5%. This nonlinear inflection point indicates that 2ms to 10ms is the working window for maintaining the causal mapping of cross-node data. The cross-correlation solution and address offset mechanism based on the historical time delay feature matrix transforms the physical transmission hysteresis into a deterministic pointer shift in the digital storage space. Under the condition of suppressing high-frequency electromagnetic noise and non-stationary slip interference of flexible media, this mechanism maintains the alignment of the logical timing of the control parameters of the controlled node with the mechanical response phase, ensuring the tension stability of the multi-stage transmission system under full gradient conditions.

[0038] Example 3: The current corrugated production line experiences broadband fluctuations in data stream frequency under non-stable speed change conditions. The fixed-length data truncation method causes the cross-correlation operation to truncate the characteristic waveform of the characteristic period. The data acquisition unit collects the angular acceleration value of the main drive node, and the feature storage unit extracts the absolute value of the angular acceleration value as a state parameter. The feature storage unit adjusts the discrete sampling point capacity of the sliding detection window according to the state parameter. When the absolute value of the angular acceleration value is greater than the preset acceleration threshold, the feature storage unit retrieves the internal mapping rule and reduces the discrete sampling point capacity of the sliding detection window. The feature storage unit reduces the discrete sampling point capacity from the baseline of 512 sampling points to 256 sampling points. The state parameter is converted into the addressing boundary constraint condition in the data buffer domain, eliminating the calculation error caused by feature truncation.

[0039] The offset solution unit calculates the discrete cross-correlation vector within the set sliding detection window. The offset solution unit reads the upstream reference feature sequence and the downstream auxiliary feature sequence within the sliding detection window. The offset solution unit calculates the inner product of the upstream reference feature sequence and the downstream auxiliary feature sequence under different relative shift steps. The offset solution unit divides the inner product value by the product of the standard deviations of the two sequences and outputs the normalized cross-correlation coefficient representing the waveform correlation. The offset solution unit generates a discrete mapping array containing the relative shift step and its corresponding normalized cross-correlation coefficient in the digital storage space. Matrix dot product and normalization calculation extract the features of mechanical stress fluctuation into a dimensionless digital representation set, eliminating the influence of absolute magnitude differences on the correlation determination.

[0040] The offset calculation unit traverses the discrete mapping array. The offset calculation unit sets a judgment threshold of 0.85 and removes coordinate points in the discrete mapping array whose normalized cross-correlation coefficient is less than 0.85. It then extracts the extreme values ​​of the normalized cross-correlation coefficients from the remaining coordinate points. Next, it extracts the normalized cross-correlation coefficients corresponding to the two adjacent relative shift steps of the extreme value. The offset calculation unit compares the extreme value with the adjacent normalized cross-correlation coefficients. When the extreme value is greater than the adjacent normalized cross-correlation coefficients and the adjacent normalized cross-correlation coefficients show a monotonically decreasing trend, the extreme value corresponds to a causal correlation peak. The offset calculation unit locks the relative shift step to which the extreme value belongs and outputs the relative shift step as the address offset. The address offset is input to the parameter compensation unit, which drives the logical shift of the reference read pointer. Numerical comparison and morphological judgment filter out digital noise caused by electromagnetic pulses in the data bus, maintaining alignment between the pointer shift action and the physical medium transmission hysteresis.

[0041] Example 4: In a multi-stage transmission node operation status data processing scenario, the offline calibration unit inputs a sinusoidal sweep frequency drive signal in the frequency range of 0Hz to 100Hz to the main drive node. The data acquisition unit acquires a reference time series and an auxiliary time series containing 10,000 sampling points under two extreme boundary states: no flexible dielectric load and rated flexible dielectric load. The offset calculation unit calculates the cross-correlation function between the reference time series and the auxiliary time series under the two extreme boundary states, extracts the time difference scalar corresponding to the inflection point in the amplitude decay curve of the cross-correlation function, and the system state abrupt change is accompanied by... As the polarity of the signal derivative reverses, the offset calculation unit extracts inflection points. Its built-in discrete difference algorithm calculates the second-order difference sequence of the cross-correlation function amplitude decay curve. It iterates through the second-order difference sequence, locking onto discrete sampling nodes where the value transitions from the negative to the positive interval and the absolute value reaches the global peak. The corresponding time coordinate value is then identified as the inflection point. The second-order difference extremum optimization procedure transforms the morphological inflection features into a machine-recognizable deterministic time parameter. The offset calculation unit determines the time difference scalar as the base hardware delay and adds a 20% tolerance margin to the base hardware delay to determine the maximum response delay. ,in, The time length threshold for opening a circular buffer in digital storage space is used to constrain the alignment boundaries of multi-source heterogeneous time-series data streams within the physical hysteresis range of the mechanical structure.

[0042] The parameter compensation unit calculates the reference fluctuation envelope of angular acceleration in the reference time series and calculates the variance statistic of the reference fluctuation envelope within a 500ms sliding time window. The parameter compensation unit selects the upper limit of the 95% confidence interval in the variance statistic set as the acceleration threshold. ,in, The physical limit for determining transient and drastic operating conditions is the maximum response latency of the feature storage unit. With acceleration threshold Storing data into internal registers, the feature storage unit applies the maximum response latency in the internal registers during continuous manufacturing processes. With acceleration threshold The sliding detection window capacity and addressing step size are determined, and the system uses the extreme values ​​of the physical response and statistical boundaries collected on site to determine the correction parameters, eliminating the dependence on prior empirical constants.

[0043] Example 5: The current corrugated production line faces variations in physical damping of the medium and system clock drift during batch manufacturing switching. The parameter compensation unit obtains the bus write clock frequency of the direct memory access controller. Byte length scalar of a single-frame multi-source heterogeneous temporal data stream The parameter compensation unit is based on the formula Calculate the write rate of the base address ,in, The clock pulse frequency, The number of bytes in a data frame. For the address space write rate, the parameter compensation unit is based on the reference address write rate. An address offset mapping matrix is ​​constructed. The input to this matrix is ​​the address offset in the time dimension, and the output is a deterministic address increment in the physical memory dimension. The parameter compensation unit receives the address offset output from the offset calculation unit and, through the associated address offset mapping matrix, outputs a deterministic address increment corresponding to the current hardware communication state. The state parameters are transformed into register space span constraints based on the data flow logic of the underlying interface. The parameter compensation unit locates the shift target of the reference read pointer in the physical memory address space based on the deterministic address increment, offsetting the digital space addressing deviation caused by variations in the physical damping of the medium. During this process, the reference address write rate... In effect, it defines the spatiotemporal resolution of digital storage space for the evolution of physical states. Since variations in the physical damping of the corrugated medium alter the propagation rate of physical stress waves between the rollers, the parameter compensation unit monitors this in real time. The pulse fluctuations dynamically adjust the base scaling factor of the address offset mapping matrix to ensure the length of each byte. The physical displacement span represents the deformation rate of the medium at the current production line speed. This mapping logic writes the span into the underlying register as a digital projection of the physical damping change, thereby achieving adaptive compensation for nonlinear physical deviations at the addressing level.

[0044] The offset calculation unit acquires multi-source heterogeneous time-series data streams under conditions of no external flexible medium tension load in the idle speed range of the corrugated production line as the basis noise sample. The offset calculation unit calculates the variance of the background cross-correlation amplitude of the basis noise sample within a preset time window. The offset solution unit calculates the variance of the background cross-correlation amplitude. The reciprocal of the product and the dimensionless convergence weight coefficient Multiply to generate the decision threshold ,in, The variance of the background amplitude distribution. As an influencing factor, and to define the filtering boundaries of the discrete mapping array computation nodes, the offset calculation unit periodically updates the judgment threshold according to the system timer during the continuous manufacturing process. The system utilizes the real-time acquisition of numerical constraint algorithms based on the electrical characteristics of the underlying hardware to maintain the tension balance of the controlled nodes under multi-stage transmission conditions.

[0045] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit of this application and the scope of protection of this invention, and all of these forms are within the protection scope of this application.

Claims

1. A digital data processing system for the operating status of a corrugated production line, characterized in that, The system includes: The data acquisition unit is used to acquire multi-source heterogeneous time-series data streams that characterize the operating status of controlled nodes in the corrugated production line; wherein, the data acquisition unit is connected to the feature storage unit, the feature storage unit is connected to the offset calculation unit, and the offset calculation unit is connected to the parameter compensation unit. The feature storage unit is used to perform dimension alignment on multi-source heterogeneous time-series data streams within the digital storage space to construct a historical delay feature matrix containing time-series distribution features; The offset calculation unit is used to calculate the address offset as the address increment in the digital storage space based on the correlation mapping relationship between the upstream reference features and the downstream auxiliary features in the historical delay feature matrix, so as to characterize the response delay level. The parameter compensation unit is used to perform logical shifting of the reference read pointer of the historical delay feature matrix according to the address offset, so that the reference read pointer is pointed to the historical state slice that is related to the current processing phase of the multi-source heterogeneous timing data stream, and outputs feedforward compensation control parameters to offset the response delay based on the historical state slice, so that the logical timing of the data frame of the feedforward compensation control parameters is ahead of the mechanical response phase of the controlled node.

2. The digital data processing system for the operating status of a corrugated production line according to claim 1, characterized in that, The multi-source heterogeneous time-series data stream acquired by the data acquisition unit includes: rotational speed data characterizing the driving frequency operating state, pressure values ​​characterizing the medium tension fluctuation, and current characteristic quantities characterizing the load change of the driving frequency actuator; the data acquisition unit is also used to perform normalization processing to map the original signals of different dimensions to a dimensionless numerical space between 0 and 1.

3. The digital data processing system for the operating status of a corrugated production line according to claim 1, characterized in that, The feature storage unit constructs the historical delay feature matrix through the following steps: Step S31, determine the addressing step size according to the preset maximum response delay, and open a circular buffer in the digital storage space; Step S32, push the feature vectors input in real time by the data acquisition unit into the circular buffer in time sequence; Step S33, extract the feature vectors of adjacent sampling periods in the circular buffer and perform tensor product operation to generate the historical delay feature matrix.

4. The digital data processing system for the operating status of a corrugated production line according to claim 1, characterized in that, The offset calculation unit includes a signal filtering subunit; the signal filtering subunit is used to perform frequency domain transformation on the historical time delay feature matrix to remove high-frequency noise features in multi-source heterogeneous time-series data streams and improve the extraction accuracy of address offset.

5. The digital data processing system for the operating status of a corrugated production line according to claim 1, characterized in that, The parameter compensation unit internally stores address offset mapping logic; the address offset mapping logic is used to convert the address offset into a deterministic address increment in the digital storage space, and completes the logical offset of response delay by modifying the memory address.

6. The digital data processing system for the operating status of a corrugated production line according to claim 1, characterized in that, The system also includes a residual verification unit; the residual verification unit is connected to the parameter compensation unit and is used to calculate the state residual value after the feedforward compensation control parameter output; when the state residual value exceeds the preset 5% safety threshold, the residual verification unit outputs a blocking signal to block the output channel of the parameter compensation unit, so that the system retreats to the steady-state maintenance mode.

7. The digital data processing system for the operating status of a corrugated production line according to claim 3, characterized in that, When performing dynamic addressing updates, the offset calculation unit is specifically used to: extract the baseline features from the historical delay feature matrix, and determine the target feature slice with a correlation coefficient reaching a preset peak value by sliding correlation retrieval in the circular buffer, and determine the addressing depth of the target feature slice in the circular buffer as the addressing offset.

8. The digital data processing system for the operating status of a corrugated production line according to claim 1, characterized in that, The system also includes a gain adjustment unit; the gain adjustment unit is used to dynamically adjust the output gain value of the feedforward compensation control parameters according to the current operating frequency; when the operating frequency increases, the gain adjustment unit synchronously increases the calculation weight of the feedforward compensation control parameters.

9. A digital data processing system for the operating status of a corrugated production line according to claim 1, characterized in that, The parameter compensation unit is also used to perform asynchronous addressing operations. Asynchronous addressing operations refer to the logical shifting of the memory address in the feature storage unit while keeping the hardware sampling frequency constant, so that the logical timing of the data frame of the feedforward compensation control parameter is ahead of the mechanical response phase of the controlled node, in order to offset the stress hysteresis caused by the slippage of the medium in the corrugated production line.

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