47results about How to "Perfect control strategy" patented technology

The invention discloses a switch magnetic resistance generator system capable of realizing rapid excitation / demagnetization. The system comprises a switch magnetic resistance motor body, a prime mover, a position sensor, a power converter, a DC power supply and a controller, wherein the power converter is a four-level power converter. By adopting the four-level power converter, at an excitation stage, in an angle position control mode, the exciter current of a phase winding is increased, and the energy storage of a magnetic field is increased so that the output power of an overall power generation system is improved and it is easier for the power generation system to reach a rated power; in an current chopping control mode, the excitation time is reduced, rapid excitation is realized, and the time of a generating stage is increased so that the generating capacity of a motor is enhanced and the output power of the system is increased; and at the generating system, when two voltage sources are utilized, rapid demagnetization can be realized.

The invention relates to an automobile headlamp automatic control system based on machine vision. The automobile headlamp automatic control system is characterized in by comprising a camera arranged at the inner side of a windscreen in the front of an automobile, wherein the camera is connected with a DSP (Digital Signal Processor) control system arranged on a central control panel of the automobile through a data line, an output end of the DSP control system is connected with a triode, the triode is connected with a control end of a relay, another control end of the relay is connected to a power supply of the automobile, and contacts of the relay are connected in a headlamp control circuit of the automobile in series; the camera collects the information of road lamps at the two sides of a road and the lamp information of automobiles in an opposite direction in real time and sends collected color images to the DSP control system, the DSP control system analyzes and processes pixels in the road lamp zone and the automobile lamp zone and sends control commands to the triode according to processed results, and the triode controls the relay to pull in and disconnected so as to control the automobile to be switched between a high beam lamp and a dipped headlamp. The system can be broadly used for the switch control of the headlamp of the automobile running at night.

The invention discloses an electronic parking breaking system. The controlling method comprises the following steps that an EPB switch of the system outputs a parking controlling signal to an electronic parking controlling module, the electronic parking controlling module outputs a driving signal to an electronic parking actuator, the electronic parking controlling module is connected with a whole vehicle CAN network framework through a CAN bus serial port, an intelligent interconnection controlling module in the whole vehicle CAN network framework is in communication with a screen, the screen sends the parking controlling signal to the electronic parking controlling module, the electronic parking controlling module sends a parking state signal to the screen, and the screen displays the parking state signal. The electronic parking breaking system is a parking system of combing intelligent interconnection with an electronic parking breaking system, a reasonable and complete control strategy at present is contained, operation of a driver is conducted more conveniently, and vehicle control experience is improved.

The invention discloses a method for controlling a permanent-magnet synchronous motor in a full-speed range without position sensors in a surface-mounted mode. The method includes firstly, injecting pulsating high-frequency voltage signals into an axis of a two-phase rotation estimation coordinate system, scanning the permanent-magnet synchronous motor within a 360-degree electric injection angle range and recognizing the initial position of the permanent-magnet synchronous motor according to high-frequency feedback currents of the axis; secondly, tracking the position of the permanent-magnet synchronous motor in real time according to the high-frequency feedback currents of the axis; thirdly, controlling the permanent-magnet synchronous motor in a medium and high-speed range and a low-speed range without the position sensors by a pulsating high-frequency injection process and a sliding-mode observer process and selecting control processes according to an instruction speed and an actual speed so as to control the permanent-magnet synchronous motor in the full-speed range without the position sensors. The method has the advantages that the two control processes supplement each other, so that the control performance can be improved to a certain extent as compared with the control performance when each control process is used individually, the dependence of the sliding-mode observer process on parameters of the motor is cast off, the influence of the high-frequency injection process on a sliding-mode observer and original control for the permanent-magnet synchronous motor is eliminated, and a perfect strategy for controlling the permanent-magnet synchronous motor in the full-speed range without the position sensors in the surface-mounted mode is provided.

The invention discloses a fan adjustment and control testing method for optimizing power consumption. When a server system is subjected to system pressure testing in the working environment, the system temperature and the system power consumption are monitored by constantly adjusting the fan rotation speed so as to achieve minimum system power consumption. Accordingly, a fan adjustment and control strategy for optimizing the power consumption is set, and by means of the testing, a tester can confirm that the system power consumption of the server is minimum when various compression software can operate on a server in various working environments.

The invention provides an energy efficiency direct monitoring device based on demand response. The energy efficiency direct monitoring device is used for monitoring electrical parameters and thermal parameters of power consumer side electrical load equipment, and the thermal parameters of environment in which the device is positioned, and sending a control command signal to the power consumer side electrical load equipment according to a demand response control command of a demand response center or each parameter value in a self-control policy which is preset by a power consumer. The power consumer side electrical load equipment generates control motion according to the control command signal. The load of a power grid is stabilized, energy utilization efficiency is improved, and the energy cost of the power consumer is reduced.

The invention provides an energy efficiency indirect monitoring device based on demand response. The energy efficiency indirect monitoring device is used for monitoring electrical parameters and thermal parameters of power consumer side electrical load equipment, and the thermal parameters of environment in which the device is positioned, and sending a control command signal to the power consumer side electrical load equipment according to a demand response control command of a demand response center or each parameter value in a self-control policy which is preset by a power consumer. The power consumer side electrical load equipment generates control motion according to the control command signal. The load of a power grid is stabilized, energy utilization efficiency is improved, and the energy cost of the power consumer is reduced.

The embodiment of the invention provides a control terminal and an unmanned aerial vehicle and a control method thereof, the method is characterized in that: target object indication information of aplurality of target objects is determined, and jointing leg information between the plurality of target objects is determined; each encircling flight of the unmanned aerial vehicle for the plurality of target objects indicated by the target object indication information is controlled; during the process of completing the encircling flight from one target object to the next target object, the unmanned aerial vehicle is controlled to fly to the next target object according to the jointing leg information. According to the above way, the unmanned aerial vehicle is controlled during the flight process to realize the target object encircling flight and airline flight, so that the unmanned aerial vehicle is flexible and effective during the flight, and the application requirements from various industries or fields to the unmanned aerial vehicle can be satisfied.

The invention discloses a double salient electro-magnetic motor asymmetric current control system and method. The system is provided with a novel power control circuit topology, each phase of a motor is controlled by an individual full bridge, the system comprises four power switch pipes, positive and negative amplitude values of phase current of the motor can be individually controlled, the system is provided with a closed-loop system of a rotating speed-asymmetric current ring, a rotating speed ring generates a reference current signal transmitted to a current amplitude value calculation module, an optimized positive and negative semi-cycle current reference value is obtained by the current amplitude value calculation module by the aid of an algorithm 'based on the maximum magnetic energy product principle', sampled current and the positive and negative semi-cycle current reference value given by a controller are compared to generate a control signal, and a control inverter bridge circuit controls the motor. The torque current ratio and the efficiency of the motor can be improved, torque pulsation is decreased, and control reliability is improved.

The invention discloses a parallel multi input coupled inductor buck and boost converter which belongs to the technical field of power electronic converting. The converter is composed of N boost circuits, a buck circuit (20) and a load, wherein N is a natural number more than one. Each boost circuit is composed of an input source, a filtering inductor, a switch tube, a diode and a filtering capacitor. The buck circuit is composed of a switch tube, a diode, a filtering inductor and a filtering capacitor. The output ends of N boost circuits are connected in parallel and then are connected with the input end of the buck circuit (20). The output end of the buck circuit (20) is connected with the load. The filtering inductors of N boost circuits are respectively coupled with the filtering inductor of the buck circuit. According to the converter provided by the invention, a number of input sources power the load at the same time; buck and boost converting between input and output is realized; the filtering inductors are coupled with each other; the converter has the advantage of small size; different input sources and the load side can be respectively and independently controlled; and the control is simple.

The invention discloses a current-source-type multi-input full-bridge converter with a single primary winding, belonging to the field of power electronic converters. The converter comprises N input channel circuits, a full-bridge converter circuit (20) and an output rectifier circuit (30), wherein N is a natural number larger than 1, each input channel circuit comprises a DC power source, an inductors, a switching tube and a diode, the cathodes of all the diodes in the N input channel circuits are connected, the cathodes of all the DC power sources are connected, the full-bridge converter circuit (20) comprises four full-bridge switching tubes and one transformer, and the output rectifier circuit (30) comprises a full-bridge rectifier circuit and a filtration capacitor. The transformer of the converter provided by the invention is provided with only one winding and 4+N switching tubes so that small converter size and simple structure are achieved. When the switching tubes in the input channels are simultaneously switched off, the DC power sources are connected in parallel to supply power to the loads so that a plurality of input sources supply power to the loads simultaneously or in shared time.

The invention provides an impeller surface equivalent wind speed prediction method of an impeller surface of a large-scale wind turbine generator. The method comprises the following steps: step 1, measuring wind speed of each height of a virtual impeller surface in front of the wind turbine generator through a laser radar; step 2, calculating the equivalent wind speed of the virtual impeller surface according to the measured wind speed data of each height of the virtual impeller surface; step 3, acquiring an actual impeller surface equivalent wind speed by utilizing the wind turbine generatormodel and sensor measurement data; and step 4, inputting the calculated equivalent wind speed of the virtual impeller surface into a BP neural network after passing through a time shifting model. Themethod adopts the laser radar for wind measurement, the accuracy is high, power loss caused by wind measurement lag is eliminated, the equivalent wind speed of the impeller surface can be accurately predicted, and therefore the design of an advanced prediction control strategy of the wind turbine generator set is more effectively served, and reliable input is provided for advanced prediction control of the large-scale wind turbine generator set.

The invention provides a fuel cell system air path control system and method. The fuel cell system air path control system comprises an air compressor, a humidifier, a valve R1, a valve R2, a three-way valve T1 and a valve R3. The air compressor is respectively connected with the valve R1 and a first inlet of the humidifier through pipelines, the valve R2 is arranged between a first outlet of thehumidifier and an air inlet of the fuel cell, an air outlet of the fuel cell is sequentially connected with the three-way valve T1 and the valve R3 through pipelines, and the valve R3 and the valve R1are jointly connected to an exhaust port. Parameters of air entering the fuel cell are monitored in real time through the related sensors, the effect of controlling the parameters of the air inlet ofthe fuel cell is achieved by adjusting the corresponding electric valves, and more fuel cell system air path control strategies are achieved.

The invention discloses an unmanned aerial vehicle long-distance power supply method which is suitable for being executed on a controller of a wireless power supply device. The method comprises the steps of S10 controlling an unmanned aerial vehicle to be charged to drive into a charging area; S20 according to the received position information of the to-be-charged unmanned aerial vehicle, the tracking and pointing direction of a rotary table and the response time, starting a motor corresponding to the tracking and pointing rotary table, and locking a receiver of the to-be-charged unmanned aerial vehicle; S30 calling a database to identify the to-be-charged unmanned aerial vehicle, querying the corresponding information of the to-be-charged unmanned aerial vehicle, determining the laser emission power of a laser according to the corresponding information, and starting the laser to emit a laser beam to the receiver; S40 receiving the charging power transmitted by the receiver in real time in the charging process, comparing the received data with the rated power of the model in the database, and adjusting the transmitting power of the laser in real time; S50 receiving collecting dataof the unmanned aerial vehicle through wireless communication, and adjusting the angle of a three-dimensional adjusting device of the receiver according to the collecting data; and S60 after chargingis completed, turning off the laser, and enabling the rotary table to return to the original position.

The invention discloses a single-primary winding voltage source type multi-input full-bridge converter, belonging to the field of power electronic converters. The converter consists of N input channel circuits, a full-bridge converter circuit (20) and an output rectifying circuit (30), wherein N is a natural number greater than 1; each input channel circuit consists of an input source, a switch tube and a fly-wheel diode; the N input channel circuits are connected in series by the fly-wheel diode; the full-bridge converter circuit (20) consists of four full-bridge switch tubes and a transformer; and the output rectifying circuit (30) consists of a full-bridge rectifying circuit, a filtering inductor and a filtering capacitor. The primary edge of the transformer of the converter is only provided with a winding, the number of the switch tubes can be 4+N, and the volume of the converter is small and the structure is simple; when the switch tubes in the input channels are switched on simultaneously, the input source is connected in series to the load for supplying electricity so as to realize that the multiple input sources supply electricity simultaneously or at the different time.

The invention discloses an urban road network signal control method and device based on vehicle path information. The method specifically comprises the following steps: acquiring target path data, demand generation time data, speed data, road network geometric data and conflict phase data of all vehicles in a road network in a target time period; recording the number of iterations m = 1, and initializing the vehicle arrival time of each intersection; clustering arriving vehicles of the same lane into a motorcade, constructing and solving a single-point signal control model taking delay minimization as a target, and optimizing vehicle leaving time at intersections one by one; calculating the vehicle arrival time of each intersection in the (m + 1) th iteration, and if the vehicle arrival time is not converged and m =m + 1, continuously optimizing the vehicle departure time; and if convergence occurs, taking the vehicle arrival and departure time of the mth iteration as the final vehicle arrival and departure time, and obtaining an intersection signal control scheme. According to the iknvention, delay minimization is taken as a target, a signal control scheme of each intersection of the road network is optimized, and the service level of the road network is effectively improved.

The invention discloses a micro grid energy control method comprising the steps of getting a Pareto optimal solution set using a non-dominated sorting genetic membrane algorithm, and choosing an appropriate solution from the Pareto optimal solution set as needed to control the generation power of a distributed power supply. The obtained solution set is uniformly and widely distributed and is diverse, premature convergence can be avoided as much as possible, and the selectivity and accuracy of the control strategy of the distributed power supply in the micro grid in practical application are ensured. The invention further discloses a processor for implementing the method, and a micro grid energy control system. The system comprises a control device, and the control device comprises the processor. The processor and the micro grid energy control system also have the advantages stated above, which are not repeated here.

The invention discloses a method for controlling a permanent-magnet synchronous motor in a full-speed range without position sensors in a surface-mounted mode. The method includes firstly, injecting pulsating high-frequency voltage signals into an axis of a two-phase rotation estimation coordinate system, scanning the permanent-magnet synchronous motor within a 360-degree electric injection angle range and recognizing the initial position of the permanent-magnet synchronous motor according to high-frequency feedback currents of the axis; secondly, tracking the position of the permanent-magnet synchronous motor in real time according to the high-frequency feedback currents of the axis; thirdly, controlling the permanent-magnet synchronous motor in a medium and high-speed range and a low-speed range without the position sensors by a pulsating high-frequency injection process and a sliding-mode observer process and selecting control processes according to an instruction speed and an actual speed so as to control the permanent-magnet synchronous motor in the full-speed range without the position sensors. The method has the advantages that the two control processes supplement each other, so that the control performance can be improved to a certain extent as compared with the control performance when each control process is used individually, the dependence of the sliding-mode observer process on parameters of the motor is cast off, the influence of the high-frequency injection process on a sliding-mode observer and original control for the permanent-magnet synchronous motor is eliminated, and a perfect strategy for controlling the permanent-magnet synchronous motor in the full-speed range without the position sensors in the surface-mounted mode is provided.

The invention relates to a meteorological condition prediction method and device for a self-driving vehicle, a vehicle and a controller, and aims to solve the problem that in the prior art, the real meteorological environment of the environment where the vehicle is located cannot be predicted, so that safety threats exist in vehicle driving. The method comprises the steps of determining a third initial rainfall level based on windscreen wiper information, determining a light level based on lamplight information, and determining an illumination level based on visibility information and information of an environment scene where a vehicle is located; determining a final rainfall level based on the first initial rainfall level, the second initial rainfall level and the third initial rainfall level; determining a final illumination level based on the illumination level, the light level, the pollution level information and the weather type information; determining whether the environment temperature exceeds the standard or not based on the environment temperature information; and according to the result, determining whether the meteorological condition of the current environment of the vehicle meets automatic driving or not.

The invention discloses a measuring system and method for electromagnetic field distribution in wireless charging of an electric vehicle. The measuring system comprises an electric vehicle, a wirelesscharging receiving device, a wireless charging transmitting device and an automatic testing device. A testing rod includes an X-axis crossbar, a Y-axis standing column and a Z-axis rail; since the X-axis crossbar can move freely at the Y-axis standing column and the Y-axis standing column can move freely on the Z-axis rail, the magnetic field distribution situation of each point around the electric vehicle in charging can be measured automatically by the automatic testing device, so that a detection result is obtained rapidly; the detection result is clearer and more accurate; the detection result can be displayed for the user visually by the formed three-dimensional image; and thus the user can perfect the control strategy based on the e magnetic field intensity distribute situation.

A drift control method for a ground remote control robot includes: acquiring drift control parameters (step 101); and controlling the ground remote control robot to move along the drifting curve in adrifting state according to the drifting control parameter (step 102), the drifting state being a state in which the orientation of the head of the ground remote control robot is not parallel to the moving direction of the ground remote control robot. By means of the mode, the ground remote control machine can automatically achieve the effect of turning in a drifting state according to the drifting control parameters, the control strategy of the ground remote control robot is enriched, meanwhile, the requirement for manual operation of a user is lowered, and therefore the interestingness of control over the ground remote control robot is enhanced.

The invention discloses a parallel connection and direct connection control method for a multi-branch power battery system, and the method comprises the steps: comparing the voltage of each branch power battery and calculating the voltage difference of each branch power battery before the parallel connection and direct connection of power batteries; then, parallel direct hanging control of various working conditions is carried out based on the comparison result of the power of the power batteries of the branches and the calculation result of the voltage difference of the power batteries of the branches; according to the method, multi-branch energy division is achieved, impact-free direct hanging control is achieved, no large circulation is generated, a perfect software control strategy is provided, and parallel direct hanging of all working conditions is achieved.

The invention discloses a vehicle-mounted display terminal with a real-time data storage function. The vehicle-mounted display terminal comprises a master processor module, a storage module, a power supply conversion module, a bus communication module, a signal acquisition module, a display driving module and a human-computer interaction module. The storage function of real-time data is completed by adopting multiple storage media. Real-time storage of the operation data is completed via an FRAM in working, and the data are stored in a storage unit via a delay turn-off method when power is off. The storage function of the real-time data is completed without influencing security of an operating system so that the service life of the display terminal can be substantially enhanced, users can search and analyze system equipment operation state parameters anytime, system fault points can be positioned, the control strategy can be improved and production efficiency can be enhanced.

The invention discloses a switch magnetic resistance generator system capable of realizing rapid excitation / demagnetization. The system comprises a switch magnetic resistance motor body, a prime mover, a position sensor, a power converter, a DC power supply and a controller, wherein the power converter is a four-level power converter. By adopting the four-level power converter, at an excitation stage, in an angle position control mode, the exciter current of a phase winding is increased, and the energy storage of a magnetic field is increased so that the output power of an overall power generation system is improved and it is easier for the power generation system to reach a rated power; in an current chopping control mode, the excitation time is reduced, rapid excitation is realized, and the time of a generating stage is increased so that the generating capacity of a motor is enhanced and the output power of the system is increased; and at the generating system, when two voltage sources are utilized, rapid demagnetization can be realized.

The invention discloses a double salient electro-magnetic motor asymmetric current control system and method. The system is provided with a novel power control circuit topology, each phase of a motor is controlled by an individual full bridge, the system comprises four power switch pipes, positive and negative amplitude values of phase current of the motor can be individually controlled, the system is provided with a closed-loop system of a rotating speed-asymmetric current ring, a rotating speed ring generates a reference current signal transmitted to a current amplitude value calculation module, an optimized positive and negative semi-cycle current reference value is obtained by the current amplitude value calculation module by the aid of an algorithm 'based on the maximum magnetic energy product principle', sampled current and the positive and negative semi-cycle current reference value given by a controller are compared to generate a control signal, and a control inverter bridge circuit controls the motor. The torque current ratio and the efficiency of the motor can be improved, torque pulsation is decreased, and control reliability is improved.

The invention provides an energy efficiency direct monitoring device based on demand response. The energy efficiency direct monitoring device is used for monitoring electrical parameters and thermal parameters of power consumer side electrical load equipment, and the thermal parameters of environment in which the device is positioned, and sending a control command signal to the power consumer side electrical load equipment according to a demand response control command of a demand response center or each parameter value in a self-control policy which is preset by a power consumer. The power consumer side electrical load equipment generates control motion according to the control command signal. The load of a power grid is stabilized, energy utilization efficiency is improved, and the energy cost of the power consumer is reduced.

The invention discloses anautomatic control system and method for a reactor control rod of a high-temperature gas cooled reactor unit. The system comprises a PID controller connected with the control rod in the reactor, the PID controller controls a stepping motor driver and a stepping motor through a switching arithmetic unit, and finally the control of the control rod is realized; a deviation input signal of the PID controller is calculated by a subtracter through a function generator; subtracter input signals comprise two paths, the first path is a nuclear power set value, the second path is nuclear power needing to be controlled and adjusted, and the nuclear power is directly measured by a nuclear power measurement signal measurement point; and the other path of signals output by the function generator is calculated by an absolute value arithmetic unit and a less than or equal arithmetic unit, sequentially enters a pulse generator and a rising edge trigger, and then is sent to the PID controller for state switching. Optimal control of the control rod of the high-temperature gas cooled reactor nuclear power unit can be met, and safe and stable operation of a power station is guaranteed.

The invention relates to a displacement monitoring device and method for a main distributing valve of a hydraulic turbine governor. The displacement monitoring device comprises a PLC controller, an isolation transmitter and a switch, wherein the PLC controller is electrically connected with a magnetostrictive displacement sensor through the isolation transmitter, and the displacement sensor is used for checking a position signal of a limiting plate of the main distributing valve; the PLC is in communication connection with the switch, the switch is in communication connection with the industrial personal computer and the in-situ control unit, and the PLC is powered by the power supply conversion module; and the magnetostrictive displacement sensor is used for being arranged on the side face of a main distributing valve base, and the main distributing valve base is connected with a main distributing valve element. The displacement monitoring device is reasonable in structural design, convenient to install, easy to operate and complete in function, the control safety of the speed regulator is improved, and the risks of unit equipment damage and personnel safety caused by faults of amagnetostrictive displacement sensor of a main pressure distribution valve of the speed regulator or following faults of the main pressure distribution valve are reduced.

The invention relates to a dual-motor electric power steering system adopting a parallel connection structure and a power steering method. The dual-motor electric power steering system comprises a steering wheel rotating angle and position sensor, wherein the steering wheel rotating angle and position sensor and a steering wheel torque sensor are arranged under a steering wheel; the steering wheel and wheels are connected with a steering gear; the steering gear is connected with a dual-motor system adopting a parallel connection structure; and the steering wheel rotating angle and position sensor, the steering wheel torque sensor, a vehicle speed sensor and the dual-motor system adopting the parallel connection structure are separately connected with an electric control unit (ECU). According to the dual-motor electric power steering system disclosed by the invention, through the ECU, a control current of each motor in the dual-motor system is changed, so that an assist characteristic curve is flexibly changed, and contradiction of steering between 'portability' and 'flexibility' is well coordinated, so that the operation is stable; four working modes of a dual-motor torque coupling power steering mode, a main motor power steering mode, a damp control mode and a returning control mode can be realized, so that not only is the steering portability guaranteed, but also the driving comfortableness and the driving safety are improved.