43results about How to "Efficient control method" patented technology

The invention discloses a polyphase permanent magnet synchronous motor current waveform optimal control method, comprising the following steps of A, current reference value coordinate transformation; B, current multiple proportion resonance regulation; and C, coupling compensation. In the control method, based on polyphase permanent magnet synchronous motor vector control, a polyphase synchronous rotating coordinate system current reference value is transformed to a current reference value of each phase in a polyphase static coordinate system through polyphase coordinate transformation, the current reference value of each phase and a current feedback value of each phase of a motor are respectively subjected to improved multiple superposition proportion resonance regulation, and a resonance separation method is introduced, decoupling is realized by feed-forward compensation, and floating tracking and harmful subharmonic restraining for highly dynamic property fundamental waves and usable subharmonic are realized. The method can restrain the adverse impacts, such as motor loss, torque ripple and vibration noise, caused by a harmful harmonic current of the polyphase motor, can explore the positive effects of the usable harmonic current, gives full play to the advantages of the polyphase motor and improves the system performance.

The invention discloses a data-driven traffic network distributed region control method, which comprises steps of traffic data filtering, traffic network lane saturation modeling and signal light timing distributed region control. Rolling optimization is carried out based on a prediction model, a series of future control signals U(k) is set, under given constraints, the best solution U*(k) is solved and is used as input of a control object. A Nash optimization method is further used to solve the correlation problem among multiple subsystems, and the optimal signal period length U<n><*>(k) is acquired. The data driven method is used to do research on a lane saturation prediction model, the signal light region timing optimization based on distributed prediction control is put forward, and aset of high-efficiency control method is provided for avoiding or alleviating traffic congestion.

The invention relates to a polyphase induction motor appointed secondary current waveform control method, comprising the following steps of A, current feedback value processing; B, current complex regulation; and C, voltage reference value determination. In the method, based on polyphase induction motor vector control, a polyphase motor current is mapped to a synchronous rotating coordinate system of mutually orthogonal fundamental waves and each usable subharmonic through polyphase synchronous rotating coordinate transformation, proportion integration resonance regulation and proportion integration regulation are respectively executed, and a complete current controller is formed by superposition; integration and resonance separation are respectively introduced so as to further improve the static and dynamic performances. The method has the advantages that the method is realized by digital control, and is simple and practical; the method can restrain the adverse impacts, such as motor loss, torque ripple and vibration noise, caused by a harmful harmonic current of the polyphase induction motor, can explore the positive effects of the usable harmonic, and gives full play to the advantages of the polyphase motor. The method can be used in the high-power alternating current motor driving occasions, such as marine propulsion, mining machinery and track hauling.

It is possible to provide a motor control device which always operates with a maximum voltage and a high efficiency even when a DC bus-bar voltage of a power conversion circuit fluctuates, and a method for controlling the motor. The motor control device includes: a d-axis and q-axis current instruction calculation unit (1, 2); a d / q conversion unit (9); a current control unit (3); a modulation wave instruction calculation unit (5); and a PWM generation unit (6). The motor control device further includes: a modulation wave instruction limit unit (13) which limits a first modulation wave instruction and generates a second modulation wave instruction; a modulation ratio saturation degree calculation unit (14) which obtains a modulation ratio saturation degree from the first modulation wave instruction and the limit value from the modulation wave instruction limit unit; and a weak field control unit (4) which corrects the d-axis current instruction value in accordance with the modulation ratio saturation degree.

The invention discloses an accumulated water treatment device of a steaming and baking oven, the steaming and baking oven and a control method. The steaming and baking oven is provided with a cavity used for accommodating articles to be heated. The accumulated water treatment device comprises a heating device; and the heating device heats the bottom of the cavity to perform accumulated water treatment, and controls the on / off state of the accumulated water treatment device according to the detected temperature of the bottom of the cavity so as to perform / stop the accumulated water treatment inthe cavity. The accumulated water treatment device can timely remove accumulated water in the cavity, and can avoid the environment pollution in the cavity of the steaming and baking oven due to bacterium breeding in the accumulated water, so that the work environment in the baking oven is more sanitary. The accumulated water treatment device has the advantages that the cavity bottom deformationand color change cannot be caused in the accumulated water treatment process; meanwhile, the temperature lowering characteristics of the accumulated water are used; the temperature is used for controlling the on / off state of the accumulated water treatment device; the accumulated water treatment process is effectively controlled; the timely treatment on the accumulated water is realized; and the equipment damage or danger due to too high heating temperature is avoided.

The invention belongs to the technical field of electronic circuits and provides a UPS system sharing a battery pack and a control method thereof. The UPS system comprises a battery pack and at leasttwo UPS hosts connected to the battery pack, wherein the first input end of each UPS host is connected to the positive pole of the battery pack; the second input end of each UPS host is connected to the negative pole of the battery pack; a current signal output by the battery pack supplies power to each UPS host, and is successively rectified by a rectifier module and inverted by an inverter module; a control module is configured to control each UPS host to achieve the synchronization of the rectifier module and the synchronization of the inverter module according to a synchronization signal fed back by a combining module in order that respective UPS hosts output consistent voltage, frequency and phase. Thus, multiple UPS host can share the battery packs when combined, which reduces systemcost. In addition, because respective UPS hosts output consistent voltage, frequency and phase, combining faults are reduced. The control method is simple and easy, and high in efficiency.

According to one embodiment, the host controller includes a register set to issue command, and a direct memory access (DMA) unit and accesses a system memory and a device. First, second, third and fourth descriptors are stored in the system memory. The first descriptor includes a set of a plurality of pointers indicating a plurality of second descriptors. Each of the second descriptors comprises the third descriptor and fourth descriptor. The third descriptor includes a command number, etc. The fourth descriptor includes information indicating addresses and sizes of a plurality of data arranged in the system memory. The DMA unit sets, in the register set, the contents of the third descriptor forming the second descriptor, from the head of the first descriptor as a start point, and transfers data between the system memory and the host controller in accordance with the contents of the fourth descriptor.

The invention relates to a multi-floor micro-building model prediction and control method based on a non-cooperative game. According to the technical schemes, the multi-building micro-network model prediction and control method is characterized in comprising the following steps that firstly, a non-cooperative game model of multi-floor micro-network is established; secondly, a multi-micro network model prediction and regulation model based on the non-cooperative game is established; thirdly, interior power optimization is conducted based on prediction data obtained through step 2 to obtain thesurplus electricity of each time in the prediction time domain, a game is conducted by all buildings with own benefits as the biggest principle, and thus the trading power and electrovalence of all buildings and distribution network and other buildings; and fourthly, the optimized control sequence of all building micro networks in a control time domain is obtained through a model prediction and the non-cooperative game, and the optimized control sequence comprises call wire power of the distribution network, trading electric quantity with other micro-network, electrovalence and refrigerating capacity, and then the first control sequence is issued to all building micro networks. According to the multi-floor micro-building model prediction and control method based on the non-cooperative game, electricity selling benefits of all buildings can be improved, and the operation cost of the buildings can be further lowered.

The invention discloses a control method for assisting primary frequency modulation of a thermal power generating unit by flywheel energy storage, and relates to the technical field of thermal power generating unit control. By means of the load characteristic of flywheel energy storage, when frequency modulation load reduction is needed in power grid frequency modulation, a motor in a flywheel energy storage system serves as a motor to accelerate a flywheel by means of the quick charging function of the flywheel energy storage when frequency modulation load reduction is needed; electric energy is converted into mechanical energy, so that the unit load is reduced; when power grid frequency modulation needs to increase load, the motor in the flywheel energy storage system is used as a generator to convert mechanical energy of a flywheel into electric energy to supply power to the outside by utilizing a quick discharge function of flywheel energy storage, so that unit load is increased; and therefore, the primary frequency modulation performance of the unit can directly and automatically adjust the steam turbine control valve to complete the primary frequency modulation response without depending on the self-adjusting system of the steam turbine, the service life of steam turbine generator unit equipment is prolonged, and the economical efficiency of a thermal generator unit is enhanced.

According to one embodiment, the host controller includes a register set to issue command, and a direct memory access (DMA) unit and accesses a system memory and a device. First, second, third and fourth descriptors are stored in the system memory. The first descriptor includes a set of a plurality of pointers indicating a plurality of second descriptors. Each of the second descriptors comprises the third descriptor and fourth descriptor. The third descriptor includes a command number, etc. The fourth descriptor includes information indicating addresses and sizes of a plurality of data arranged in the system memory. The DMA unit sets, in the register set, the contents of the third descriptor forming the second descriptor, from the head of the first descriptor as a start point, and transfers data between the system memory and the host controller in accordance with the contents of the fourth descriptor.

The invention is a 8x8 array photoswitch and the control method thereof, comprising 8 2x2 photoswitches and two 4x4 photoswitches. And its control method comprises the steps of: 1) establishing light path switching numerical tables for the two 4x4 photoswitches; 2) according to the input port of input light path and the corresponding target port thereof, setting adjacent input port to connect with a different light path of 4x4 photoswitch, where each input port communicates with the corresponding target port through the same light path of 4x4 photoswitch; 3) according to the connecting state of input and output ports of 4x4 photoswitch, inquiring about the corresponding values in the first and second numerical tables to complete light path switching of the 8x8 photoswtich. And it provides a high efficiency control method and implements high speed control and complex light path switching.

The invention relates to a simple and controllable method for regulating the particle spacing of a Fe3O4@PVP@PNIPAM photonic crystal nano-chain. The particle spacing of the Fe3O4@PVP@PNIPAM magnetic photonic crystal nano-chain is regulated by adjusting the concentration of a polyacrylic acid aqueous solution and / or the mole ratio of methylene diacrylamide and N-isopropylacrylamide in the reactionsystem, the concentration of the polyacrylic acid aqueous solution is changeable in the range of 0.33-1.09g / L, and the mole ratio of methylene diacrylamide and N-isopropylacrylamide is changeable in the range of 0.01-0.1. Because of the use of the above technical scheme, compared with the prior art, the method provided by the invention has the following advantages and positive effects that: 1) themethod is simple, efficient, and low in cost, has good controllability and repeatability, and is easy for industrial application and popularization; and 2) the brightness and chroma regulation rangeis wide, and the regulation method is simple and efficient.

The invention discloses a P gear parking system control method which comprises the following steps: when a complete vehicle is powered off, detecting a P gear signal, a driving motor rotary speed signal and a vehicle speed signal to collaboratively judge and drive a P gear actuator to keep the current position or lock; and when the complete vehicle is powered on, detecting a brake panel signal, adriver seat belt buckle inserting signal and a vehicle door closing signal to collaboratively judge and drive the P gear actuator to keep the current position or unlock. The P gear parking system control method can improve the vehicle safety to prevent the vehicle from sliding a slope or preventing the P gear from being removed in the unsafe state.

The present invention relates to a loop closing control method for the loop closing switch of a power distribution network. The output power of the distributed power generation on at least one side of the loop closing switch is adjusted, and the access power of a load on at least one side of the loop closing switch is switched and adjusted. Finally, the voltage vector difference between the two sides of the loop closing switch is enabled to be smaller than a preset value. Meanwhile, the voltages of other related nodes, other than the loop closing switch of the power distribution network, are within the range of allowable values. At this time, the loop closing switch is closed. When the loop closing control cannot be realized through the adjustment of one parameter, the other parameter is adjusted to finally realize the loop closing control. Therefore, the control method is very efficient. The distributed power generation has the advantage of reactive compensation, and the flexible adjustment of loads is also realized. Therefore, the loop closing success rate of the loop closing switch of the power distribution network is improved, so that the uninterrupted power supply to important loads is realized. Meanwhile, the investment on traditional power generation power requirements and other reactive power compensation equipment is reduced.

The invention provides a polypeptide aggregate used for regulating subtype transformation of macrophages and a preparation method and application thereof. The polypeptide aggregate comprises a targeting unit, a morphology transformation driving unit and an aggregation driving unit which are connected in sequence by amide bonds; the targeting unit includes a polypeptide sequence targeting a type M2macrophage. The polypeptide aggregate adopts a segmented design, and the targeting unit targeting the type M2 macrophage, the morphology transformation driving unit and the aggregation driving unit are integrated into a polypeptide molecule, then efficient assembly of the polypeptide aggregate in vitro and precise targeting and site-selective reassembly of the polypeptide aggregate in vivo are realized, transformation of the type M2 macrophage to a type M1 macrophage is realized, and meanwhile, the specificity, precision and efficiency of subtype transformation are guaranteed. Meanwhile, thepolypeptide aggregate has good biocompatibility, and is regarded as a molecule for realizing subtype transformation of the macrophages, and has higher biological safety.

The invention relates to a multi-wire sawing machine. The multi-wire sawing machine comprises a controller and two processing rollers of which the axes are parallel, wherein grooves are carved in the circumferences of the processing rollers; a sawing wire is wound on the corresponding grooves of the two processing rollers in sequence; a fixed rod is arranged on the outer side of one processing roller and is parallel to the axis of the processing roller; a plurality of wire pulleys are arranged on the fixed rod at equal intervals; all the wire chases of the wire pulleys correspond to the grooves in the processing rollers; the sawing wire is wound around the wire chases of the wire pulleys; and the numbers of loops of the sawing wire wound on the wire pulleys are same; and voltage detection devices are mounted on the wire pulleys. The multi-wire sawing machine fully utilizes the sawing wire in the sawing process, reduces the phenomenon of wire breaking, and improves the working efficiency.

The invention discloses an intelligent buoyancy type flood control and water retaining device for a ventilation pavilion and a control method. The device comprises a water retaining plate, a shell, a buoyancy assembly, an on-site monitoring system and an electrical control unit. The overall structure of the water baffle is matched with the shape of the ventilation pavilion, and the water baffle is formed by splicing a plurality of water baffles. The shell accommodates the buoyancy assembly and the water baffle, a water inlet hole is formed in the bottom, an extending opening is formed in the top, and a sealing tape is arranged between the extending opening and the baffle. The buoyancy assembly comprises a buoyancy device and a guide device. The buoyancy device drives the water baffle to float upwards. The guiding device is used for guiding the buoyancy device. The on-site monitoring system collects water level information and water baffle state information at the corresponding position of a position sensor in real time through a water level gauge and the position sensor, and transmits the information to the electrical control unit. Compared with preset parameters, judging and displaying are performed. The flood prevention capacity of the ventilation pavilion in rainstorm is improved, the station is prevented from being flooded, and subway operation safety is ensured. The automation degree of monitoring is improved, the speed is high, and the efficiency is high.

The invention provides an intelligent lifting type flood control water retaining device for a fan pavilion and a control method. The device comprises a baffle assembly, a shell, a lifting assembly, a field monitoring system and an electrical control unit, wherein the baffle assembly is matched with the fan pavilion in shape; a sealing rubber strip is arranged on the periphery of the bottom of a baffle; the shell contains the lifting assembly and the baffle assembly and covers a foundation of a fan pavilion opening; a lifting opening is formed in the top of the shell; the sealing rubber strip seals the lifting opening when the baffle ascends; the lifting assembly comprises a linkage lifting mechanism and a motor; the field monitoring system comprises a water level gauge and a position sensor and collects information; and the electrical control unit receives the information and drives the linkage lifting mechanism to ascend and descend by controlling the motor to rotate forwards and backwards, and the baffle is made to stretch out and retract. The lifting mechanism is automatically controlled to drive the baffle to ascend and descend, the flood control capacity of the fan pavilion during rainstorm is improved, a station is prevented from being flooded, and the operation safety of a subway is ensured; and the automation degree is improved, the speed is high, and efficiency is high.

The invention relates to a method for optimizing the current waveform of a multi-phase permanent magnet synchronous motor, comprising the following steps: A, current reference value coordinate transformation; B, current multi-proportional resonance adjustment; C, coupling compensation; the control method is based on multi-phase permanent Magnetic synchronous motor vector control, the current reference value of the multi-synchronous rotating coordinate system is transformed into the current reference value of each phase in the multi-phase static coordinate system through multi-phase coordinate transformation, and the current feedback value of each phase of the motor is respectively improved by multiple superposition proportional resonance adjustment , and the method of resonance separation is introduced, and the decoupling of feedforward compensation is adopted to realize the static error-free tracking of the fundamental wave and available sub-harmonics with high dynamic performance and the suppression of harmful sub-harmonics. This method can suppress the negative effects of motor loss, torque ripple and vibration noise caused by harmful harmonic currents of multi-phase motors, and enable the positive effects of available harmonic currents to be explored, give full play to the advantages of multi-phase motors, and improve system performance .

The present invention relates to an unmanned aerial vehicle anti-collision control method. The method comprises the steps of: determining a control area of a host; allowing unmanned aerial vehicles inthe area to receive control of a host device, each unmanned aerial vehicle comprises identity information, route information and route calculation complexity information; when the unmanned aerial vehicles detect there is another unmanned aerial vehicle in a certain range at the positions where the unmanned aerial vehicles are located, sending the identity information, the route information and the route calculation complexity information to the host device; and when the unmanned aerial vehicles receive the replanning route information sent by the host device, executing the flight motion at the next position. The unmanned aerial vehicle anti-collision control method employs the host to calculate and command a new flight route and performs centralized control to avoid generation of danger of collision of unmanned aerial vehicles. Or the unmanned aerial vehicle anti-collision control method allows the unmanned aerial vehicles to directly send their own next routes and the route calculation complexities to one another and allow the unmanned aerial vehicles to respectively combine the received opposite-side routes and their own routes for determination to avoid collision. The whole control method is good in implementation effect in a complex environment.

The invention discloses a thermal power plant 0 class load power supply system and control method. The system comprises an energy storage device, an AC uninterrupted power load low-voltage power distribution device, an AC security load low-voltage power distribution device, and a DC security load DC power distribution device. The AC uninterrupted power load low-voltage power distribution device, the AC security load low-voltage power distribution device and the DC security load DC power distribution device are internally provided with an AC uninterrupted power load bus, an AC security load busand a DC security load bus respectively. The energy storage device is connected to the AC uninterrupted power load bus, the AC security load bus and the DC security load bus through a first switch, asecond switch and a third switch. The AC uninterrupted power load bus is also connected to a first power supply for a thermal power plant power through a fourth switch, and the AC security load bus is also connected to a second power supply for the thermal power plant power through a fifth switch. The system is intensively streamlined, compared with a conventional method, fully static equipment improves the reliability of a 0 class load power supply of the thermal power plant, the power supply quality is improved, and pollutant emissions are reduced.

The invention provides a control method of controllable detachable power equipment based on a brushless motor, and belongs to the technical field of power equipment control. The power equipment disclosed by the invention comprises a body module, a power module and a switch module, wherein the power module is detachably installed to the body module; and the power module comprises the brushless motor and a control module used for controlling movement of the brushless motor, and the control module comprises a communication module. The control method comprises the following steps: first of all, the switch module is taken as a fixation end, and the power module is installed to the switch module; secondly, according to needs of the power equipment, the control module regulates operation parameters of the brushless motor in the power module; and then, the control module is started, communication connection between the communication module in the control module and other external equipment is established, and after the communication connection is established, the power equipment can be controlled through the external equipment. The control method disclosed by the invention has the advantages of high efficiency, great convenience and diversified communication modes.

The invention discloses an air compressor heat recovery device control system. The air compressor heat recovery device control system comprises a programmable controller, a control panel and a controlelectric cabinet of an automatic control air compressor heat recovery device. The air compressor heat recovery device comprises a cooler, a cyclic water route is connected with the cooler, the cyclicwater route comprises a heat storing water tank provided with a water supplementing pipe, a cyclic water inlet pipe, a cyclic water return pipe and booster pumps. The booster pumps are mounted in thecyclic water inlet pipe, and connected with a water supply pipe. The booster pumps comprise the first booster pump M1 and the second booster pump M2. A water supplementing valve is mounted on the water supplementing pipe, a water level sensor is mounted in the heat storing water tank, and water temperature sensors are mounted in the heat storing water tank, the cyclic water inlet pipe and the cyclic water return pipe correspondingly. The programmable controller controls the water supplementing valve and the booster pumps to be started up and shut down according to a command signal manually input from the control panel and a fedback water temperature signal and a water level signal in a programmed mode, the programmable controller is connected with a warning indicator, and an electromagnetic valve is mounted on the water supply pipe.

The invention relates to a production control method based on self-defined production original record, which includes steps that a system lists posts with operation permission according to users' ID, then users select the posts, the system automatically locates batch number information of the current production, the system automatically lists all procedures of the original record for guiding production, then users select the production procedure, the system indicates equipment and equipment parameters required in the procedure, the system automatically collects the equipment parameters and tests and compares the collected parameters with standard parameter values, if meeting requirements, the data is stored for rechecking, production is terminated after rechecking passes, then system provides the function of inquiry and printing, if out of early-warning range, early warnings are sent out, if out of process control range, deviation disposition is carried out, then the system checks the necessity of reworking, and if positive, the system returns to the step of selecting posts by users. Compared with the prior art, the production control method is reasonable and highly efficient, saves production cost, greatly increases production efficiency, effectively controls the production process, guarantees accuracy of production control, and guarantees product quality.

The invention discloses a data-driven traffic network distributed region control method, which comprises steps of traffic data filtering, traffic network lane saturation modeling and signal light timing distributed region control. Rolling optimization is carried out based on a prediction model, a series of future control signals U(k) is set, under given constraints, the best solution U*(k) is solved and is used as input of a control object. A Nash optimization method is further used to solve the correlation problem among multiple subsystems, and the optimal signal period length U<n><*>(k) is acquired. The data driven method is used to do research on a lane saturation prediction model, the signal light region timing optimization based on distributed prediction control is put forward, and aset of high-efficiency control method is provided for avoiding or alleviating traffic congestion.

The invention discloses a large-scale cluster control method based on second-order communication topology in the technical field of artificial intelligence. The method comprises the steps that at least two intelligent main bodies with autonomous operation capacity form a first-order communication topology, and the intelligent main bodies in the first-order communication topology comprise followers and unique leaders; any intelligent body is provided with a plurality of sub-groups, the sub-groups form a second-order communication topology, and a leader of the second-order communication topology is one follower of the first-order communication topology. Aiming at the defect of strong parameter coupling caused by a traditional method in large-scale cluster system control, a follower in a first-order communication topology is set as a leader in a second-order communication topology, so that the relation between different communication topologies is reduced, subgroup systems under different communication topologies are enabled to operate independently, and the defect of strong parameter coupling caused by the traditional method is solved.

The invention discloses an unmanned vehicle autonomous navigation deviation correction method, which comprises the following steps of: reading information of a gyroscope arranged at the center of a navigation unmanned vehicle and information of two laser range finders arranged on the left side and the right side of the navigation unmanned vehicle, and respectively correcting a curve, a crossroad, a road surface and the like; and the main control unit judges the road condition information of the normal road and the road condition information of the curve and the crossroad under the normal road, calculates the transverse offset and the course offset and sends the transverse offset and the course offset to the main control unit, and the main control unit rectifies the path planned by the navigation unmanned vehicle in real time according to the judgment information. The road condition information in the automatic navigation process can be effectively judged, and the navigation accuracy and stability of the navigation unmanned vehicle are greatly improved.

The invention discloses a cold-rolled steel plate control method. The cold-rolled steel plate control method is simple, rapid and efficient and can guarantee qualified finish product production. According to the technical scheme, the cold-rolled steel plate control method sequentially comprises the following steps of 1) examining the outer surface of a steel plate and ensuring no bubble, no crack, no scab, no layering, no tensile crack and no inclusion of the steel plate; 2) detecting the thickness allowance, the hardness and the ductility of the steel plate selected in the step 1), and enabling the indexes to be in the following ranges including a thickness allowance range of 0.4-1.0+-0.01 mm, a hardness range of 50-54 HRB and a ductility range of 31%-34% for a medium-drawing cold-rolled plate, and a thickness allowance range of 0.48-1.0+-0.01 mm, a hardness range of 45-51 HRB and a ductility of 36%-42%. The cold-rolled steel plate control method belongs to the technical field of steel plates.

The invention discloses a control system of a multifunctional full-automatic water surface cleaning ship and a control method thereof. An STM32 control panel belongs to the technical field of water surface cleaning ships, receives an instruction, then performs a corresponding program and outputs the instruction to an adjusting system, a power system and a transmission system, so that the adjustingsystem, the power system and the transmission system start corresponding mechanical arms, steering engines and crawler belts to execute corresponding operations. The invention has the advantages of safe and reliable design, convenient control system and high operation efficiency, is mainly used for cleaning floaters in water areas in various narrow rivers and park enterprises, and can also be used in small lakes and river surges which cannot be treated by various large and medium-sized cleaning ships, and the efficient control system and control method thereof play a great role in efficiencyimprovement in treatment.