221 results about "Cycle control" patented technology

The invention provides a single-tube boost PFC circuit control method and system for single-cycle control, and relates to the technical field of data processing, and the method comprises the steps: generating a self-adaptive PWM control signal according to a duty ratio adjustment amount and a frequency compensation factor, and dynamically limiting the pulse current amplitude of a power switch tube through a peak current prediction algorithm, a load current change rate is generated based on the real-time relevance between the pulse current amplitude and the load current; setting a first monitoring point in a dynamic duty ratio change path of the PWM control signal, and extracting a duty ratio change rate and a switching frequency fluctuation parameter in real time; setting a second monitoring point in a feedback path of a load current change rate, and extracting a load current slope characteristic and a transient change amplitude in real time; and based on the parameters of the first monitoring point and the second monitoring point, generating a correction factor through a dynamic response correlation model. According to the invention, a high power factor can be realized under wide input voltage and load fluctuation.

The invention relates to an equipment flexible resistance adjustment servo control method and system, and the method comprises the steps: obtaining resistance torque data and a periodic control instruction of target equipment, carrying out the expansion estimation of disturbance parameters, and obtaining the total disturbance torque data and load equivalent stiffness information of a system; acquiring servo motor data of the target equipment, performing multiple feed-forward compensation on the total disturbance torque data of the system to obtain anti-interference feed-forward compensation data, and performing stiffness reference adjustment in combination with the load equivalent stiffness information to obtain a feed-forward reference coefficient; performing torque parameter coupling on the anti-interference feed-forward compensation data according to the feed-forward reference coefficient to obtain rigidity compensation torque data; and according to the servo motor data, the feedforward reference coefficient and the rigidity compensation torque data, performing instruction construction to obtain a servo control instruction. According to the invention, the dynamic characteristics of the system under complex working conditions can be evaluated more accurately, and the precision of servo control is improved.

A system and a method for controlling a propulsor assembly of an electric aircraft. The system may include an electric motor, wherein the electric motor may include a rotor and a stator, a propulsor driven by the electric motor configured to propel an electric aircraft. The propulsor may include a propeller. The propeller may include a blade. The system may include a cyclic control assembly configured to deflect the blade. The cyclic control assembly may include an actuator and a push rod mechanically connected to the actuator and the propulsor. The system may include a flight controller. The flight controller may be configured to receive sensor datum from at least a sensor communicatively connected to the electric aircraft, generate a deflection command as a function of the sensor datum and actuate the cyclic control assembly as a function of the deflection command.

The invention relates to the technical field of computer software development and application deployment, and discloses a mobile terminal productization configuration method and system.The method comprises the steps that a cross-platform development framework and a front-end framework are selected and configured; common parts in page logic are extracted into independent modules, and differential requirements in different environments are met in a parameterization mode; loading a corresponding configuration file according to a target environment, wherein the target environment comprises a development environment and a production environment; defining a mapping relation between the input path and the output path, and dynamically synchronizing the function file under the input path to the output path in the construction process; and controlling the synchronization logic of the configuration file and the code file through the life cycle of the plug-in, wherein the synchronization logic comprises real-time monitoring in a development environment and one-time synchronization in a production environment. According to the method, the problem that customization and productization are difficult to consider in a traditional development mode is solved, and the development efficiency and the convenience of later maintenance are improved through a systematic technical means.

A plastics processing system is described. This system comprises at least one plastics processing machine (100) and a control and operating system (10) for controlling and operating this plastics processing machine (100). The control and operating system includes a cycle control unit, which, in a production mode, controls the plastics processing machine at least indirectly and which, for this purpose, uses a first computing unit (20) equipped with a first operating system. Furthermore, the control and operating system includes a first interface device (30), which has at least one first input device, at least one visualization device, and a second computing unit (34) equipped with a second operating system and in communication with the first input device and the visualization device. The first computing unit (20) and the second computing unit (34) communicate via A bidirectional first communication device (36) is provided. This allows the plastics processing machine (100) to continue operating even if the first interface device (30) fails, for example, to process an existing production order. To ensure minimum communication with the cycle control system even if the first interface device (30) fails, a second interface device (50) is also provided, which has at least one second input device (52). The signals generated by the second input device (52) are transmitted to the first processing unit by means of a second communication device (54) that operates at least unidirectionally.

The invention belongs to the technical field of active magnetic suspension bearings, and discloses a single-cycle delay compensation method and device for a magnetic suspension bearing switch power amplifier, and the method comprises the steps: building a unipolar single-cycle control mathematical model, and calculating the duty ratio of a single cycle; setting a state switching criterion of a charging and discharging period, and judging a charging and discharging state of a single period; and establishing a linear duty ratio prediction model, calculating a linear derivation duty ratio dt and a calculation duty ratio dj to obtain a total duty ratio of a corresponding switch tube in a period, and outputting the total duty ratio to the corresponding switch tube. According to the method, target tracking can be achieved under the static condition, steady-state errors do not exist, and the problem that time delay exists in a traditional digital single-cycle control algorithm can be effectively solved under the dynamic condition.

The invention discloses a heating ventilation air conditioner temperature control method and device based on a floating point type electric ball valve, and the method comprises the steps: collecting the current indoor temperature in real time, determining the target opening degree and the PWM period of the floating point type electric ball valve according to the current temperature and the preset target temperature based on a PID control algorithm and a preset PWM period dynamic adjustment strategy, and controlling the temperature of the floating point type electric ball valve according to the target opening degree and the PWM period. And calculating the current opening degree of the floating point type electric ball valve according to a preset opening degree estimation model, and controlling the operation state of the floating point type electric ball valve according to the current opening degree, the target opening degree and the PWM period. According to the technical scheme provided by the embodiment of the invention, approximate continuous adjustment of the floating point type electric ball valve is realized through combination of the PID control algorithm and the preset PWM period dynamic adjustment strategy control, a high-precision controller and a signal module do not need to be matched, the cost is effectively reduced, and the temperature control precision is improved.

The invention relates to the technical field of data management, in particular to an intelligent control method based on big data, and the method comprises the following steps: S1, collecting operation state data and environment information of a target system, constructing a control intention vector model in combination with a task target and a control boundary, and packaging the control intention vector model into a migration data object; s2, in the control execution process, collecting a state flow and a feedback sequence, detecting behavior drift, dynamically correcting a control strategy, and outputting a corrected control sequence; and S3, applying the correction strategy to a target system, collecting an execution response, identifying behavior chain evolution, updating a control intention model, outputting an evolvable control intention chain, and supporting a control task of a next period. According to the method, real-time data acquisition, behavior offset identification and control intention chain evolution are combined, and dynamic adjustment and adaptive optimization of a control strategy are realized, so that the stability, robustness and long-term adaptive capacity of the system are improved.

The invention discloses a mechanical arm control method and system based on real-time attitude estimation, and the method comprises the steps: obtaining a real-time point cloud image of a mechanical arm, and carrying out the attitude estimation based on the real-time point cloud image to obtain an initial attitude of the mechanical arm; the target posture of the mechanical arm is determined, the target posture and the initial posture are analyzed, and the posture error difference is determined; the attitude error difference is analyzed, the error state of the mechanical arm in each direction is determined, and a motion optimization coefficient matrix of the mechanical arm is determined based on the error state; the operation parameters of the mechanical arm are optimized on the basis of the motion optimization coefficient matrix, and motion of the mechanical arm is controlled on the basis of the optimized operation parameters; and after the mechanical arm moves, the steps are repeated, and closed-loop circulation control over the mechanical arm is completed. Visual monitoring is converted into real-time dynamic monitoring from static monitoring, continuous closed-loop deviation correction can be achieved in the movement process of the mechanical arm, accordingly, dynamic deviation correction and accurate operation are achieved, and the grabbing and assembling success rate and efficiency of the mechanical arm are greatly improved.

The utility model discloses an embedded pump-driven two-phase liquid cooling CDU system and a server. The system comprises a condenser, a liquid storage tank, a control valve and a fluorine pump assembly which are connected in sequence, and a control assembly which is electrically connected with the condenser, the control valve and the fluorine pump assembly; the multiple cold plates are connected between the condenser and the fluorine pump assembly in series in parallel, the fluorine pump assembly comprises multiple fluorine pumps arranged in parallel, the multiple fluorine pumps are used for driving refrigerants to circularly flow among the multiple cold plates, the condenser, the liquid storage tank and the control valve, and the control assembly is used for controlling the control valve to be opened and closed. The control valve is used for controlling on-off of the liquid storage tank and the fluorine pump assembly, and the control assembly is further used for controlling the rotating speed of a cooling fan of the condenser, controlling alternate operation of a single fluorine pump among the multiple fluorine pumps according to a preset time period and adjusting the rotating speed of the multiple fluorine pumps. The phase change process of gasification heat absorption of the refrigerant is utilized, heat is efficiently and rapidly absorbed, large cooling equipment can be omitted, the cost and the size are reduced, and use convenience is improved.

The invention belongs to the technical field of SWISS rectifier control, and particularly relates to a three-phase single-stage SWISS rectifier control method for realizing phase compensation and reducing input current harmonics, and the method carries out voltage outer loop control through a single PI controller, and avoids a complex parameter adjustment process in a traditional double-PI control method. The single-cycle control based on the inductive current average value directly tracks a three-phase input current instruction, the influence of direct current side inductive current fluctuation on a control loop is reduced, and input current harmonics are reduced. The problem that the grid-side power factor is reduced due to the filter capacitor is solved through a phase compensation mechanism, and the power factor of the rectifier is improved. The method shows higher grid-side power factors and lower input current harmonics under different power levels, has the characteristics of simplicity in control and excellent performance, and is suitable for application scenes needing high-efficiency energy conversion and low harmonic pollution, such as new energy automobile charging piles and aviation power supplies.

The invention relates to the technical field of virtualization orchestration, in particular to an industrial control virtualization orchestration system and method, and the system comprises a task extraction module, a node behavior monitoring module, a stability evaluation module, an orchestration load adjustment module and a control task migration module. According to the method, the scheduling cycle closed-loop feature recognition is performed by collecting the control task scheduling mapping table and the execution instruction queue and combining the cycle control mark and the interrupt mark, so that an orchestratable task set can be effectively recognized, the behavior success rate is calculated according to parameters such as node response delay and task completion proportion, and node stability screening is performed; stability grade division of control nodes is achieved, a scheduling priority list is formed by setting a release threshold value, then the task migration opportunity is judged based on task residence time and IO completion conditions, migration targets are accurately selected in a behavior pattern matching mode, and the stability of task scheduling, the precision of resource allocation and the adaptability of control logic are remarkably improved.

The present application relates to the field of vacuum emulsifier, for solving the problem that the single effect of vacuum emulsifier cannot be quantified and the adaptive ability of cycle endpoint judgment is lacking, specifically a circulating shearing vacuum emulsifier and a control system thereof, the control system comprises an emulsification process monitoring module, an internal environment supervision module, a shearing effect statistics module, a cycle comprehensive evaluation module and a shearing cycle control module, the present application comprehensively analyzes the single cycle time and the material cycle number, generates single cycle effect evaluation features and total cycle effect evaluation features, realizes quantitative evaluation of single cycle effect, calculates the single cycle effect progressive value between adjacent cycles, and according to the threshold judgment result, the cycle process is divided into progressive cycle and stable cycle, whether the total cycle effect and cycle number meet the standard is also judged synchronously, realizes progressive cycle recognition and multi-condition joint judgment mechanism, and dynamically perceives whether the emulsification process enters the effect saturation stage.

An image forming apparatus comprises a photosensitive drum, an exposure head and a control unit. The control unit can execute a first mode and a second mode in which the drum is rotated at a second rotational speed that is a / b times of the first rotational speed of the first mode. In exposure of the second mode, the control unit controls a cycle of a light emission timing at a cycle of b / a times of a cycle of the first mode, controls the light-emitting units to cause, among n rows, the light-emitting units of (n×((d−c) / d)) rows to not emit light, and sets a drive current so that an amount of light matches (a×d) / (b×c) times of the first mode.

The utility model relates to the technical field of refrigerators, in particular to a fresh-keeping refrigerator combining air cold-heat exchange with direct cooling and circulation control refrigeration, which comprises a refrigerator, an exhaust fan is arranged in an inner cavity of the refrigerator, a compressor is arranged in the inner cavity of the refrigerator, a condenser is arranged at the bottom end of the inner cavity of the refrigerator, and a plurality of graphene sheets are arranged in the inner cavity of the refrigerator. Wheels are arranged at the bottom end of the refrigerator, a plurality of goods shelves are sequentially arranged in an inner cavity of the refrigerator from top to bottom, an exhaust outlet is formed in the rear side of the inner cavity of the refrigerator, capillary tubes are fixedly embedded in the inner cavity of the side wall of the refrigerator, a controller is arranged on the refrigerator, and a monitoring assembly is arranged in the inner cavity of the refrigerator. The fresh-keeping refrigerator combining air cold and heat exchange with direct cooling and circulating control refrigeration adopts the combined application of various systems and modules, the refrigerator design is divided into the combined application of a video area and a refrigerator fresh-keeping area, and an air (oxygen) cold and heat exchange technology and a dynamic mode are adopted.

The invention provides an excitation and static frequency converter collaborative optimization control system and method for pumping start of a pumped storage unit, and relates to the technical field of pumped storage unit control. The system comprises a data acquisition and state sensing module, a collaborative optimization controller and a high-speed execution and communication network. The data acquisition and state sensing module acquires system state data in real time; a joint prediction model, a rolling optimizer and a constraint processing unit are arranged in the collaborative optimization controller, and the collaborative optimization controller is used for carrying out rolling optimization calculation to obtain an optimal control instruction sequence; and the high-speed execution and communication network synchronously issues the optimal control instruction to the SFC and the excitation system. The method is based on the system, and collaborative optimization control is achieved through the steps of starting instruction receiving, rolling optimization, circulation control and starting and ending mode switching. According to the invention, deep cooperation and foresight control of the excitation system and the SFC are realized, and the smoothness, speed, reliability and energy saving performance of the pumping starting process of the pumped storage unit are improved.

This application provides an energy-saving method and system for stamping processes based on fluctuating load hedging, relating to the field of cycle control technology. The method includes: real-time acquisition of load signals of each stamping press in each stamping cycle, identifying the peak load mutation point corresponding to the main blanking or drawing process in that cycle, and using the peak load mutation point as the current cycle phase reference point of the stamping press; obtaining the timestamp of the current cycle phase reference point of each stamping press relative to a unified time reference, and calculating the phase difference between any two stamping presses; when the phase difference between two stamping presses is less than a preset safety threshold, selecting at least one of the two stamping presses as the target stamping press; determining a compensation time amount according to a preset compensation rule, and sending a cycle adjustment command to the target stamping press to advance or delay the start time of its next stamping cycle relative to the original start time by the compensation time amount, thereby increasing the phase difference between the two stamping presses.

The application provides a vehicle control method and device, a vehicle and a storage medium. The method is applied to the technical field of vehicles. The method comprises the following steps: obtaining water wading state information of a vehicle; in the case that the water wading state information meets a preset condition, determining a first air suspension set from multiple air suspensions according to the water wading state information; and based on a preset first control period, controlling each first air suspension in the first air suspension set to deflate and inflate. According to the application, the vehicle body can be provided with lifting force, the sinking speed of the vehicle is slowed down, and the safety of the vehicle in a water wading environment is effectively improved.

The invention discloses a high and low temperature cycle control method, relates to the technical field of semiconductor tests, and aims at solving the problems that an existing refrigeration and heating system is small in temperature range and low in temperature control precision. Comprising the following steps that S1, a refrigerating system is operated, and the temperature interval where the set liquid outlet temperature is located is judged; s2, according to the set temperature interval where the liquid outlet temperature is located, temperature control strategies corresponding to the temperature interval are executed; according to the temperature control strategy, opening and closing of all the electromagnetic valves are adjusted according to the current liquid outlet temperature, and the power of the heater and the opening degree of the electronic expansion valve are adjusted by judging whether the current liquid outlet temperature is smaller than the set liquid outlet temperature or not; and S3, if the current liquid outlet temperature can be kept the same as the preset liquid outlet temperature, the current state operation is kept. According to the high and low temperature cycle control method, the heat exchanger set of the refrigerating system can be used for heat exchange, and segmented temperature control of different temperature segments is achieved.

A dryer appliance, a controller and a method for dryer cycle control include a voltage divider circuit having a first thermistor configured to receive a first temperature signal corresponding to an inlet flow of air to a heater assembly, and a second thermistor configured to receive a second temperature signal corresponding to a heated flow of air heated from the heater assembly. The first thermistor and the second thermistor have a substantially similar resistance-temperature curve as one another. An output voltage is determined based on an input voltage, the first thermistor, and the second thermistor. A heater control relay is configured to compare the output voltage to a reference voltage corresponding to a control pulsing, a timer adjustment, or a cycle termination. The dryer cycle is adjusted based on the output voltage relative to the reference voltage.

The invention discloses a washing machine dewatering method, a washing machine and a storage medium, and the method comprises the steps: obtaining a first adjustment instruction inputted by a user through a dewatering control assembly of the washing machine after entering a dewatering stage; wherein the dehydration stage comprises at least two intermittent dehydration periods, the first adjustment instruction is used for indicating a first target rotation duration of the motor and a first target pause duration of the motor in each intermittent dehydration period, the first target rotation duration is less than a default rotation duration of the motor, and the first target pause duration is greater than the default pause duration of the motor; and for each intermittent separation period, after the motor is controlled to rotate according to the first target rotation duration, the motor is controlled to stop rotating, and the stop duration is the first target pause duration. According to the scheme, the rotation duration of the motor is shortened and the pause duration of the motor is increased through the first adjustment instruction, so that the speed increasing speed of the washing barrel is reduced, the eccentric barrel collision phenomenon is avoided, the service life of the washing machine is prolonged, and the use experience of a user is improved.

A pulse braking and thermal management cooperative control method and system for minimum radius turning of a distributed drive vehicle, the method mainly comprising: obtaining the speed and position of the inner motor; evaluating the thermal accumulation of the inner motor; based on the thermal state evaluation and the speed and position of the motor, deciding to maintain or release the braking state; according to the braking decision instruction, torque tracking is performed, and the corresponding braking torque instruction is output; wherein, in the minimum radius turning mode, the inner motor is subjected to periodic cycle control of alternating "active braking phase" and "torque release phase". The method and system change the control of the inner motor from "continuous stall" to "intermittent pulse braking" in the minimum radius turning mode, and allow a small, controlled angular displacement during the braking interval, and through the construction of a hierarchical control architecture, effective cooperative management of turning accuracy and system thermal load is achieved.

The invention discloses a multi-parameter recursive optimization battery cooling control system and method. The method comprises the following steps: acquiring basic parameters of a battery cooling system at an initial moment of a current period; establishing a battery heat production and exchange model, a compressor refrigeration model and a compressor energy consumption model; according to the cooling system basic parameters, the battery heat production model, the compressor refrigeration model and the compressor energy consumption model, the compressor rotating speed and the water pump rotating speed in the next period are determined; and controlling the compressor and the water pump to work based on the compressor rotating speed and the water pump rotating speed in the next period to control the battery temperature. The method has the advantages that the dynamic adaptability of the battery cooling system is improved, the energy efficiency ratio is optimized, and the service life of the battery is prolonged.

The application provides a control circuit for regulating the output voltage multiplication of a charge pump, which controls the opening and closing of a first switch group, a second switch group, a third switch group, a fourth switch group and a phi 3 switch through switch period control, the first switch group at least includes phi 11 and phi 12, the second switch group at least includes phi 13 and phi 14, the third switch group at least includes phi 21 and phi 22, the fourth switch group at least includes phi 23 and phi 24, and the control timing sequence is as follows: the first switch group, the third switch group and the phi 3 switch are closed when the first switch group, the third switch group and the phi 3 switch are high; the first switch group, the third switch group and the phi 3 switch are opened when the first switch group, the third switch group and the phi 3 switch are low; the second switch group and the fourth switch group are closed when the second switch group and the fourth switch group are high; the second switch group and the fourth switch group are opened when the second switch group and the fourth switch group are low; T3 is the switch on time of the phi 3 switch, and the output voltage multiplication of the charge pump is regulated by controlling T3. The application has simple structure, convenient use and high value.

The invention relates to the technical field of information, in particular to a wafer cleaning equipment multi-cavity liquid medicine intelligent circulation control method of a semiconductor wafer cleaning technology, which comprises the following steps of: sending optimized parameters obtained by calculation to a control unit of a corresponding cleaning cavity, and adjusting the actual working flow of a cavity circulating pump and the actual working state of a filtering device; the recycling process of the liquid medicine in the cavity is dynamically optimized, so that the quality of the liquid medicine is recovered to be within the range required by the process; according to cleaning process requirements of different wafer products, a liquid medicine quality parameter threshold range of each cleaning cavity is pre-established, and when the product model of the wafer cleaning equipment is switched, a liquid medicine quality control threshold corresponding to each cavity is automatically matched according to the product model, so that dynamic adjustment of a liquid medicine circulation mode and parameters of the sub-cavities is realized.

The application provides a Spring application lazy loading method based on container life cycle control, and comprises the following steps: S1, loading a custom container factory through an SPI mechanism, creating a custom lazy loading container and setting the container as a default container context; S2, executing a Spring container standard refresh process, completing Bean definition loading and BeanPostProcessor instantiation registration; S3, executing to a finishBeanFactoryInitialization step, skipping a preInstantiateSingletons full pre-instantiation method of a BeanFactory; S4, executing to a refresh completed stage, intercepting container ready event publishing and returning a main thread quickly; and S5, after application startup is completed, starting a background asynchronous thread to load a Bean and publish a container ready event; and the method solves the management and control problem of "importing and loading".

A load control device for an electrical load is configured to operate in a normal mode and a burst mode to adjust the amount of power delivered to the electrical load. The load control device comprises a control circuit that operates in the normal mode to regulate an average magnitude of a load current conducted through the load between a maximum rated current and a minimum rated current. During the normal mode, the control circuit controls the operating period of a load regulation circuit between a high-end operating period and a low-end operating period. The control circuit operates in the burst mode to regulate the average magnitude of the load current below the minimum rated current. During the burst mode, the control circuit adjusts the low-end operating period to be less than or equal to a minimum on time of the load regulation circuit.

The invention provides a liquid ejecting apparatus, a control method of the liquid ejecting apparatus, and a control program product. The liquid ejecting apparatus appropriately adjusts pressure near a nozzle. The liquid ejecting apparatus includes a piezoelectric element; a plurality of independent flow channels each including a nozzle and a pressure chamber; a common flow channel which is in common communication with the plurality of independent flow channels and supplies ink to the plurality of independent flow channels; the common flow channel is communicated with the plurality of independent flow channels, and the ink is discharged from the plurality of independent flow channels; a pump (63) for applying, to the common flow path, a pressure (Pin) for supplying the ink to the common flow path; a pump (64) for applying, to the common flow path, a pressure (Pout) for discharging the ink from the common flow path; a detection circuit that detects residual vibration in the pressure chamber after a voltage is applied to the piezoelectric element; and a cycle control unit that determines the pressure (Pin) and the pressure (Pout) on the basis of the residual vibration detected by the detection circuit.

This invention relates to a method and apparatus for high-speed flywheel multi-level wide-modulation specific energy balance cyclic control. The method is applied to the recycling of regenerative braking energy in subway traction power supply systems. By selectively employing a bubble sorting-carrier phase-shift modulation method to maintain the voltage balance of sub-module capacitors, it can maintain voltage balance even when the voltage difference between sub-module capacitors is large, and generate PWM signals to control the switching on and off of sub-module switching devices, thus solving the problem of voltage balance control for modular multi-level converter sub-modules under high-frequency fundamental frequencies. This apparatus can be installed on the DC traction network side of the subway traction power supply system to recycle the subway's regenerative braking energy, perfectly matching the instantaneous energy demands of frequent subway starts and stops. Compared with existing technologies, this invention, utilizing a wide-modulation specific energy balance cyclic control method, achieves an energy-to-kinetic energy conversion efficiency of 90%-95%, far exceeding traditional energy storage systems.

The invention discloses a double-edge multi-phase clock generator and a control method thereof, and belongs to the technical field of integrated circuit design. According to the method, the waveform freedom degree is improved through a three-stage time division architecture of'time period-round-period 'and in combination with a configuration mechanism of a plurality of programmable event points in each time period; configuration parameters are pre-stored in a register file module, and mode switching only needs to directly call pre-stored configuration, so that the real-time response capability is improved; the time control resolution is improved through double-edge counting, so that the sub-clock cycle control precision is achieved, and the method is suitable for high-precision application sensitive to power consumption and complex scene application.