20results about How to "Avoid overcompensation" patented technology

The invention relates to the technical field of numerical control machining and automatic control, in particular to a numerical control machining self-adaptive control system and method based on multi-source data, and the method comprises the steps that FPGA hardware synchronously collects main shaft current, servo current of each feed shaft, cutting vibration and grating ruler pulse, and time bases are aligned and packaged into a machining multi-dimensional state matrix; the multi-physical field error is decoupled through a three-layer cascade machine tool dynamics model, a tool nose contour deviation vector is solved, and servo lag and cutting force deformation factors are fused to construct a dynamic constraint boundary. When the deviation amplitude exceeds the limit, generating a speed feed-forward gain compensation instruction based on an inverse control model to perform instant suppression; when it is monitored that oscillation is eliminated and returns to a steady state, full-time-domain data stream interception logic is triggered, and a process optimization instruction is generated through backtracking. According to the method, the problems of nonlinear time-varying error decoupling and real-time compensation lag under multi-physics field coupling are solved, and the dynamic precision and process stability of numerical control machining under complex working conditions are remarkably improved.

The invention provides a dead zone compensation method, device and equipment of an energy storage converter, a medium and a product, and relates to the technical field of energy storage systems. According to the method, the interval of each phase of current is determined according to the three-phase output current acquired by the current sensor, and the basic dead zone compensation amount is dynamically calculated by combining the preset linear function, so that the problem of overcompensation or undercompensation caused by the fact that the existing fixed compensation amount method does not consider the compensation demand difference of different current magnitudes is avoided; the compensation direction is determined by obtaining the instantaneous value of each phase of modulation wave so as to obtain the target dead zone compensation amount, and accurate matching of the compensation direction and the expected output voltage direction is ensured; and the target dead-zone compensation amount and the original modulation wave are superposed to generate a corrected modulation wave, and then a pulse width modulation signal driven by a switching tube is generated, so that the pulse width modulation waveform difference caused by dead-zone time can be effectively counteracted, the output current harmonic wave of the energy storage converter is reduced, and the energy storage efficiency is improved. And stable and reliable operation of the energy storage converter and the whole energy storage system is ensured.

The application discloses a temperature compensation method based on thermal imaging of a machine tool ram, and relates to the technical field of machine tool thermal error compensation; the method comprises the following steps: installing a temperature measurement thermal imager and establishing a thermal distribution model, calculating thermal deformation amounts in three directions, obtaining a deformation correction error sequence, constructing a compensation error prediction model, determining an error compensation opportunity, and executing a progressive compensation strategy; two-dimensional temperature distribution data is obtained by the thermal imager, high-precision temperature distribution fields are generated by combining three-dimensional mapping technology, the theoretical deformation amounts in each direction are quantified based on an integral method, and dynamic analysis of multidimensional thermal deformation amounts is realized; meanwhile, an error correction amount is predicted in advance based on a time sequence prediction model of an LSTM network, combined with working condition parameters such as an environmental temperature and a spindle speed, active compensation is realized, a multi-condition triggering mechanism and a priority are set at the same time, and compensation at a suitable opportunity is ensured; a progressive compensation strategy avoids overcompensation or undercompensation, and a threshold alarm mechanism is combined to improve the robustness of the system.

The invention discloses granary pressure control equipment and method, and the equipment comprises an evaporation cavity which is internally provided with an evaporator and an evaporation fan; the air supply pipe assembly and the air return pipe assembly are used for communicating the evaporation cavity with the granary; the air valves are arranged in the air supply pipe assembly and the air return pipe assembly respectively; the control center is electrically connected with the pressure sensor, the temperature sensor, the CO concentration sensor and the air valves; wherein the control center is used for judging the cause of unbalanced pressure in the granary according to the detection results of the pressure, the temperature and the COconcentration in the granary and correspondingly controlling the opening or closing state of each air valve so as to adjust the pressure in the granary. According to the invention, by carrying out structure transformation and control logic upgrading on the existing granary air conditioning equipment, the granary pressure regulation, the COconcentration regulation and the air conditioning refrigeration function are integrated in the same equipment, so that the cooperative control of the granary environment is realized.

The application relates to the technical field of unmanned vehicle braking control, and discloses an unmanned trolley braking system and method based on self-diagnosis, which comprises a data acquisition unit, a control unit, a driving unit and a braking unit; the data acquisition unit acquires trolley operation data and transmits the data to the control unit; the control unit is internally provided with a self-diagnosis braking algorithm, real-time deceleration and theoretical braking distance are calculated through pre-braking test, the braking unit is controlled to perform basic braking, and the driving unit performs positive rotation or reverse rotation point compensation according to braking deviation; the method adopts a closed-loop process, that is, firstly, self-diagnosis test parameter calculation is performed, then, formal braking is performed, and finally, point compensation is implemented. The application dynamically adapts to complex working conditions. The application realizes real-time sensing and accurate compensation of braking capacity, greatly improves parking accuracy, reduces safety hazards, is suitable for high-precision braking scenes such as material handling in industrial and mining enterprises, and has remarkable practicability and popularization value.

The application discloses a kind of virtual synchronous generator secondary frequency modulation adaptive control method and system.For the frequency deviation of virtual synchronous generator primary frequency modulation in off-grid mode, the problem that traditional secondary frequency modulation is difficult to consider regulation rapidity and suppress overshoot, the application is divided into two stages with the zero point of frequency change rate as boundary on the basis of traditional VSG secondary frequency modulation active ring integral feedback: the first stage adopts fixed large integral coefficient to suppress frequency drop quickly, the second stage dynamically adjusts integral coefficient based on power deviation and frequency deviation integral, while trigger signal and key parameter design are completed.Compared with the traditional method, the application can realize frequency no-error regulation, effectively consider fast response and overshoot suppression, significantly improve the dynamic stability and operation safety of off-grid VSG under load disturbance, suitable for frequency control scene of high proportion renewable energy grid-connected microgrid, with wide application prospect and practical significance.

The invention relates to the technical field of SMT, and discloses an SMT quality control method and system, and the method comprises the steps: calculating a PCB rotation deviation angle and a PCB translation deviation, and superposing the PCB rotation deviation angle and the PCB translation deviation for a target mounting point coordinate, and obtaining a component position deviation value; when the position deviation value of the component exceeds an allowable deviation threshold value, calculating an additional displacement value generated by the rotation action, and deducting the additional displacement value from the position deviation value of the component to obtain a comprehensive compensation displacement value; and a rotation instruction is sent to a rotating head servo motor according to the component position deviation amount, a stepping pulse signal is sent to a gantry stepping motor according to the comprehensive compensation displacement amount, and a rotating head and a gantry execute compensation actions in parallel to complete component alignment. The problem that in the prior art, fixed coordinate mapping cannot adapt to PCB position changes is solved, the double-gantry cooperation efficiency is improved, and the overall production period is shortened.

The invention discloses a self-adaptive control method, system, equipment and medium for a perfluorohexanone microcapsule crosslinking process, and belongs to the technical field of microcapsule preparation, and the method comprises the steps: collecting dielectric spectrum data through a multi-electrode array, and calculating the crosslinking completion degree based on the real part and imaginary part ratio change rate in combination with spatial gradient decoupling; meanwhile, temperature data are collected to calculate the temperature gradient, and the crosslinking completion degree and the temperature gradient are subjected to coupling analysis to obtain a difference degree distribution matrix; calculating the electric field compensation amount based on the space gradient relation of the difference degree, and optimizing a carrier delivery scheme by combining the electrode array physical constraint and the carrier diffusion effect; after delivery, dielectric change is detected, a space selective electric field is applied, and self-adaptive control is achieved through circulation detection and convergence judgment. According to the invention, spatial distributed detection of the crosslinking state is realized, a non-uniformity evaluation method considering the influence of a temperature field is established, a differential control strategy based on spatial coordination and diffusion pre-compensation is provided, and a closed-loop adaptive optimization mechanism is formed.

The present application relates to the technical field of motor anti-shake, and particularly relates to a vehicle motor anti-shake control method and system, a vehicle and electronic equipment, comprising: acquiring motor speed and demand torque in real time, and calculating time sequence indexes and frequency domain indexes of the motor speed; combining the collected motor speed, demand torque, time sequence indexes and frequency domain indexes into a state vector; inputting the state vector into a pre-trained neural network model, and outputting a compensation torque; superimposing the compensation torque and the demand torque to generate a total torque and transmit the total torque to a motor controller to perform torque control; wherein the training process of the neural network model comprises building an offline simulation environment, offline training a reinforcement learning model and online fine-tuning the model. The present application can realize motor anti-shake function, reduce calibration difficulty and cost, reduce loss, can be online fine-tuned and adapted to a real vehicle, and ensure control effect.

The application discloses a method for suppressing speed fluctuation of a direct-current brushless motor, and relates to the technical field of motor control. The method collects three-phase current, bus voltage, rotor position signal and actual speed signal during operation of the direct-current brushless motor, and performs synchronous separation on a speed error signal. A speed fluctuation mapping model is established according to a preset electric angle interval, and corresponding compensation coefficients are configured for different electric angle intervals. A disturbance feedforward compensation amount is generated based on a disturbance component, and a commutation suppression amount is generated based on a periodic fluctuation component. The speed loop control parameters and the current loop control parameters are adjusted according to the current speed fluctuation amplitude and the current ripple level. The disturbance feedforward compensation amount, the commutation suppression amount and the adjusted speed loop control parameters and current loop control parameters are combined into a final control amount, which is output to an inverter driver. The method can take into account load disturbance suppression and commutation ripple suppression, and improve the speed stability and long-term operation disturbance resistance under low-speed heavy-load working conditions.

The invention relates to the technical field of light regulation and control, in particular to a panel lamp integrated with a three-gear dial switch for adjusting color temperature, which is characterized in that an all-time lamp bead operation monitoring system is constructed, the abnormal operation state of equipment is recognized and early warned in time, the risk of lamp bead damage is avoided, and the overall service life of the panel lamp is prolonged. Based on standardized luminous decay data calibration, grading color temperature fine adjustment adaptive to the whole life cycle of the lamp beads and a stable stepped current adjustment scheme, precise color temperature compensation after luminous decay is achieved, the problems of sudden color temperature change and excessive compensation are avoided, and meanwhile, through multi-unit collaboration, the color temperature compensation precision is improved. The full-process automatic management and control of the panel lamp from data acquisition, state judgment to color temperature adjustment is realized, the manual maintenance cost is reduced, finally, the high-quality panel lamp which is convenient to operate, accurate in color temperature, stable in operation and adaptive to long-term use requirements is provided for a user, and the defects of the traditional technology in color temperature regulation and control and equipment management of the double-color-temperature panel lamp are overcome.

An optical device deformation compensation method and system, and a photolithography machine, wherein the optical device is used to transfer a pattern on a mask to a wafer, the optical device deformation compensation method comprises: determining a region with aberration in an actually formed pattern on the wafer according to a difference between the actually formed pattern and a preset pattern; obtaining a deformation compensation amount of a corresponding region of the optical device according to an actual aberration in the region with aberration; and generating a corresponding compensation control signal according to the deformation compensation amount of the corresponding region of the optical device, and controlling a corresponding compensation device to compensate the corresponding region of the optical device. By using the above scheme, the local deformation of the optical device can be accurately compensated, thereby improving the imaging quality of the optical device.

This utility model relates to the field of high-voltage power transmission and distribution technology, and discloses an adjustable-capacity high-voltage series compensation device, including a core compensation unit, a bypass protection unit, a damping circuit, and a control system. The core compensation unit has at least two parallel capacitor branches controlled by independent switching switches for step-wise adjustment of the compensation capacity. The control system includes a safety interlocking system, which includes a first interlocking module and a second interlocking module that are independent of each other. The first interlocking module is used to forcibly lock all independent switching switches in the open state when the bypass switch is closed; the second interlocking module is used to prohibit operation of the incoming and outgoing line isolating switches of the device when the bypass switch is not closed. This utility model, by combining hardware forced interlocking with intelligent control, eliminates the risk of misoperation and significantly improves the safety, reliability, and adaptability of the device operation to the power grid.

The invention discloses a method and device for determining the compensation capacity of a unit and electronic equipment, and relates to the field of power systems, and the method comprises the steps: obtaining the original installed capacity of each generator set in a generator set of a power system; setting a target power shortage duration expected value, and performing multiple iterations on the target function according to the target power shortage duration expected value, the original installed capacity of each generator set and the original load of the power system; after it is detected that the target function enters the iterative convergence state, taking a compensation capacity adjustment coefficient determined by the target function in the iterative convergence state as a target coefficient; and determining the compensation capacity of the generator set according to the target coefficient and the original installed capacity of each generator set. The technical problem that the compensation scale is disjointed from the actual demand of the system due to the fact that it is difficult for a capacity compensation mechanism to ensure that the compensated power generation capacity just meets the reliability standard of the power system in the prior art is solved.

The invention discloses an intelligent jig control method integrating multi-dimensional sensing detection and technological parameter closed-loop regulation and control, and particularly relates to the technical field of intelligent jig control. A space coupling description set reflecting the influence relation of local regulation on the global situation is constructed, and the independent working condition characteristics of each pinch point are extracted; real clamping change caused by local adjustment and passive response caused by elastic force transmission of a workpiece are effectively distinguished, and the system can sense the diffusion trend of local parameter change in a multi-station system and the potential clamping unbalance evolution direction in advance by introducing a cross-station adjustment influence matrix and a cooperative stability evaluation quantity. Therefore, unified constraint and coordinated correction are carried out on the process parameter adjustment instruction, and force chain oscillation and state divergence caused by simultaneous adjustment of multiple stations are prevented.

This invention discloses a thermometer fixture suitable for transient processes in cryogenic systems, comprising a front guide tube, a rear guide tube, and a temperature measuring block with a temperature sensor mounting interface. The first end of the front guide tube and the first end of the rear guide tube are respectively connected to process piping, and the second ends of the front guide tube and the rear guide tube are respectively connected to the temperature measuring block. A heat exchange channel is formed inside the temperature measuring block, which communicates with the internal channels of the front and rear guide tubes to form a through-flow fluid channel. The fluid being measured can flow through the heat exchange channel and exchange heat with the temperature measuring block. This invention employs a through-flow structural design, combined with a temperature measuring block made of high thermal conductivity material and an optimized flow channel structure, significantly reducing the thermal inertia and thermal resistance of the temperature measuring system and improving the transient thermal response speed. It is particularly suitable for temperature measurement in cryogenic transient conditions such as superconducting cryogenic systems and modular hydrogen liquefaction equipment in the 20–30 K temperature range.

The application discloses a pedestrian motion intention reconstruction method and device for a real-person virtual-vehicle test system, and relates to the technical field of virtual reality and intelligent driving test. In view of the problems of static weight dilution, intention misjudgment, dimension conflict and model penetration existing in the prior art, the application first collects natural motion data in a non-constrained state to establish a benchmark characteristic matrix; secondly, real-time characteristics are extracted by using a sliding time window, and weights are dynamically allocated based on a local coefficient of variation; then, a normalized relative shrinkage rate is calculated, and a dimensionless comprehensive motion restriction index is obtained through fusion; finally, a dynamic gain is solved through a first-order exponential damping compensation formula, and real-time motion is interpolated and reconstructed. The application can accurately strip the subjective motion intention of pedestrians, realize anti-model penetration protection, and significantly improve the ecological validity and data reliability of real-person virtual-vehicle test experiments.

The application discloses a dynamic liquid level detection system and method based on a stirred tank, and belongs to the field of liquid level detection. The system comprises a differential pressure sensor module, a rotating speed acquisition module and a signal processing unit. The signal processing unit comprises a vortex dynamic compensation module, an adaptive filtering module and a delay prediction compensation module connected in series. The application collects the differential pressure signal of the liquid column in the tank and converts it into an apparent liquid level value, and simultaneously collects the rotating speed signal of the stirring paddle. The liquid level deviation caused by the vortex at the tank wall is calculated according to the rotating speed signal, and a first-order recursive tracking output dynamic compensation is used to eliminate the vortex liquid level deviation. The low-pass filter cutoff frequency is adaptively determined according to the rotating speed signal to suppress the stirring fluctuation noise. The change rate of the filtered liquid level value and the group delay are used for forward prediction correction to reduce the filtering delay. The application realizes dynamic cooperation of each link by using the rotating speed signal as a link, and improves the accuracy and response speed of the liquid level measurement under the stirring condition.

This application provides a hybrid truck platooning control method based on multi-factor compensation, applicable to scenarios such as ports, logistics, and mines. The method first obtains the powertrain types and real-time loads of the leading and following trucks in the platoon. The leading truck continuously broadcasts information including its target acceleration, real-time acceleration, and load status via a vehicle-to-everything (V2X) network. Upon receiving this information, the following truck dynamically calculates a cooperative safe distance that fully considers both emergency braking risk and normal following oscillation risk, taking into account its own load and the powertrain types of both trucks. Then, based on the leading truck's target acceleration and considering powertrain differences and its own load, the system generates a target acceleration command for the following truck using a multi-factor compensation strategy. This application's method suppresses platooning oscillations and ensures a safe following distance by compensating for the response differences of different powertrains.

This invention relates to a robotic arm welding deviation compensation control method based on real-time weld seam tracking. By collecting real-time welding process parameters and weld seam tracking deviations, multi-source data is fused, standardized, and feature extracted to construct a parameter semantic graph reflecting the mechanism of the process. A sparse subgraph is dynamically generated based on working condition information. Combining graph structure analysis and attention propagation, dominant parameter nodes and their linkage patterns are identified. Behavioral templates are matched to obtain the inter-parameter compensation control logic, generating compensation quantities with semantic consistency constraints to drive the robotic arm to achieve posture correction and complete closed-loop feedback. This method achieves multi-parameter welding coordination, transparent control logic, and highly adaptive quality control, improving weld seam formation consistency and the intelligence level of the welding process.