81results about How to "Simplify Control Complexity" patented technology

The invention discloses a bilateral LCC compensation network used for wireless electricity transmission and a tuning method for same and belongs to the technical field of wireless electricity transmission. A transmission circuit includes a transmitting coil 103, a first capacitor C1 whose one end is connected with the transmitting coil 103 while the other end connected with a compensation inductor, a capacitor Cf1 connected across two ends of the transmitting coil 103. And the first capacitor C1 and the compensation inductor are connected between the voltage source and the transmitting coil in series. The network also includes a receiving circuit including a receiving coil 104, a second capacitor C2 whose one end is connected with the receiving coil 104 while the other end connected with a compensation inductor, a capacitor Cf2 connected across two ends of the receiving coil 104 in parallel. And the second capacitor C2 is connected between a battery and the transmitting coil.

A passive optical network system based on label exchanging protocol of universal multi-protocol is prepared as connecting optical line terminal OLT to multiple optical network unit ONU by wideband passive optical distribution network , using OLT and ONU as edge router and GMPLS domain of said exchanging protocol for being connected to the other GMPLS router in said multi-protocol by communication link , using OLT as intermediate router of integrated service in system individually for controlling all communication activities , using ONU as inlet router of integrated service in system for executing command of OLT .

The invention discloses an experimental teaching platform based on intelligent home sensing and control, and belongs to the field of teaching. The experimental teaching platform disclosed by the invention is constructed in a live-action sand table model, comprises a sensing and control module, an intelligent gateway, a cloud platform server and a user terminal module, and is matched with an experiment manual. The sensing and control module is connected with the cloud platform server by the intelligent gateway and transmits acquired environment information data to the cloud platform server or alocal area network via a router so as to implement real-time transmission of the data. The cloud platform server is connected with the user terminal module by the Internet, the environment information data in an experiment can be viewed in real time and equipment can be controlled to carry out actuation. The invention aims to solve the problem of providing the experimental teaching platform basedon intelligent home sensing and control, which has the following advantages that: (1) terminal control modes are diverse and flexible; (2) a controller is high in efficiency; and (3) an experiment system is extensible externally. The experimental teaching platform is applicable to experimental teaching of IoT (Internet of Things) and related professions.

A self-charging strong excitation double transformer double-winding high-gain AC switched reluctance motor converter consists of four phase winding circuits, a rectifying output circuit, and an excitation and charging circuit, wherein two branch windings of each phase winding are in different circuits, the excitation is different, and the power generation output is different, moreover, the outputpolarities of adjacent phase winding circuits are alternated, the alternating current is directly obtained and the isolation, boost and rectification are carried out through the excitation and charging circuit, the output voltage and power are regulated by adjusting the switching tube on the phase winding circuit output side when necessary, the excitation and charging circuit can flexibly obtain the required excitation voltage and charge the storage battery automatically when necessary, the whole converter has the advantages of simple structure, multiple functions, and high intelligent degreeand is suitable for various types of variable speed wind electricity or the field of high-speed switched reluctance motor systems.

In a method for carrying out a plurality of correlation procedures in a mobile radio system, sample values which have been written to a data memory (DS) are read using a predetermined reading rule. Two correlation procedures are carried out on the basis of the sample values which have been read. This reading rule is in this case independent of the correlation procedure to be carried out.

The invention discloses a power supply circuit, a repeated flat-topped pulse high-intensity magnetic field generation device and a control method thereof, and belongs to the technical field of pulse power. A storage battery type circuit topology is adopted, and an energy storage capacitor is used for discharging an inductive load to generate a pulsed magnetic field; compared with the prior art, the external high-voltage charger is adopted to charge the energy storage capacitor, the storage battery can be externally connected with charging equipment according to the duration time of the flat-topped pulsed magnetic field, and the charging equipment can monitor the electric quantity of the storage battery on line; in a power supply circuit topology, an energy feedback branch is designed and is used for realizing energy feedback of an energy storage capacitor and reducing energy consumption of a system; a compensation branch is designed and used for outputting stable flat-top current, so that the stability of the flat-top part of the magnetic field is realized; and the discharge voltage of the energy storage capacitor is improved, a steep output current rising edge is generated to reduce heating of an inductive load, and meanwhile the repeatability and stability of a magnetic field are improved. The circuit has the advantages of simple structure, stability in control, high reliability, convenience in implementation and the like.

The invention, which belongs to the DC / DC converter field, discloses a power transmission method and device of a bidirectional wireless electric energy transmission system. The method comprises stepsof maintaining a switching frequency of a first full-bridge converter unchanged and reducing a switching frequency of a second full-bridge converter under a light load condition, collecting a currentoutput signal of the first full-bridge converter, subtracting the current output signal from a set value, performing PI control, and normalizing the current output signal into an internal phase shiftangle beta2 of the first full-bridge converter, calculating a fundamental wave phase shift phase angle delta of the first full-bridge converter and an internal phase shift angle beta1 of the second full-bridge converter through a ZVS soft switching condition function and an efficiency optimization function based on beta2, updating parameters in the digital processor of the first full-bridge converter according to beta2 and delta, and updating parameters in the digital processor of the second full-bridge converter according to beta1, so that the first full-bridge converter and the second full-bridge converter respectively output symmetrical square waves with the pulse widths of beta2 and beta1, and the component phase difference of the corresponding frequencies of the two symmetrical squarewaves is delta. ZVS soft switching is easier to realize, and the system transmission efficiency is improved.

The invention discloses a grid-connected inverter resonance suppression method for enhancing anti-jamming capability of a system. The relevant signals are collected and processed and finally modulation signals are obtained. Control signals are generated by the modulation signals through a PWM modulation link to control the operation of a grid-connected inverter. The functions of full feed-forwardof network voltage and active damping can be realized only by capacitive current feed-forward and grid-connected current feedback so as to suppress the influence of grid background harmonics and LCL filter resonance peak on the grid-connected current and simplify the control complexity and have good control effect. Meanwhile, the invention also provides a grid-connected inverter resonance suppression device.

The invention discloses a power electronic transformer control method based on hybrid pulse width modulation (HPWM). The method includes a CHB input-stage circuit control method and an IBDC output-stage circuit control method. According to the invention, HPWM is applied to cascaded power electronic transformers, and back-stage IBDC is used to control the intermediate DC voltage, an input-stage cascaded H-bridge rectifier only carries out simple power equalization, so as to simplify the control complexity. In order to solve the power equalization problem, the invention provides a switch-mode loop algorithm. With the algorithm, the opportunities of each module to participate in different switch modes are equal in the loop period, and the power is evenly distributed in a certain period of time; with the loop strategy, the HPWM modulation algorithm can be simplified, judging the current direction is not required, and the switch mode of each module can be determined only with the voltage instructions.

The invention aims to provide a horizontal shaft pitch-control tide energy water turbine. The water turbine comprises a front hatch cover, a rear hatch cover, a generator system, a pitch control system and a yaw assembly, wherein the generator system comprises a generator rotor, a coil and a box, the coil is fixed on the box, and the generator rotor is positioned in the coil; the pitch control system comprises a paddle, a worm wheel, a worm, a paddle-changing motor, and a turnplate; the paddle-changing motor is used for driving the worm, the worm is arranged on the turnplate and meshed with the worm wheel, and the worm wheel is fixedly connected with the paddle; the snaking assembly comprises a shuttle upright, a revolute joint and a rack, the shuttle upright is connected with the revolute joint, the revolute joint is connected with the rack, and the shuttle upright rotates on the rack through the revolute joint; and the pitch control system is connected with the generator rotor through a flange, the front hatch cover is connected with the turnplate, the rear hatch cover is connected with the generator system, and the shuttle upright is connected with the box. The water turbine provided by the invention has the advantages of simple system and high reliability, low cost, convenience in maintenance, and has a slower flow rate self-starting performance.

The invention provides a control method for improving the deviation tolerance of a wireless charging system. The method comprises the following steps of A, building a model of a wireless charging system; B, measuring the model parameter of the wireless charging system under the wireless energy transmission coil alignment and deviation condition; C, obtaining a system efficiency expression of the wireless charging system model; D, using the system efficiency expression for solving the optimum control frequency under the wireless energy transmission coil deviation condition; E, fitting the obtained optimum control frequency under different deviation conditions to obtain a frequency control curve; F, applying the frequency control curve into a system controller through programming, and controlling the wireless charging system.

The invention provides a differential pressure driving type four-way valve and a refrigerating system. The differential pressure driving type four-way valve comprises a valve body, a sliding body, a pipe D, a pipe C, a pipe S, a pipe E, a first communicating pipe and a second communicating pipe, wherein one end of the first communicating pipe is communicated with the pipe D, and the other end of the first communicating pipe is communicated with a piston chamber A to introduce pressure into the piston chamber A from the pipe D; one end of the second communicating pipe is communicated with the pipe S, and the other end of the second communicating pipe is communicated with a piston chamber B to introduce pressure into the piston chamber B from the pipe S; and the sliding body can be controlled to slide according to the pressure of the working medium in the piston chamber A and the pressure of the working medium in the piston chamber B. The four-way valve does not need to be driven by an electromagnetic coil, waste of electric energy is avoided, the electric energy is saved, and the service life and reliability of the control valve and the refrigerating system are improved; and the design of the controller and the complexity of control are simplified.

The invention relates to a refrigerating system with a capacity-adjusting scroll compressor. The invention adjusts the fit between the compressor and the operating condition through the leakage of a refrigerant of the compression middle section of the compressor to the low pressure side and the injection of the refrigerant of the high pressure side to the compression middle section of the compressor, which can effectively change the efficiency of the compressor and the capacity and performance of the system to result in that the refrigerating system with the scroll compressor can efficiently works within the large range of operating conditions and can effectively adjust the capacity of the system to make the capacity inosculated with the changeable refrigerating or heating requirements in order to improve the applicability of the system and the energy efficiency of the system under varied operating conditions of the large range. The invention can be used in the refrigerating or heating pump system with the scroll compressor in the air conditioning refrigerating field.

The invention discloses a hydraulic hybrid power transmission system with a self-adaption switching function, and belongs to the field of power transmission. The hydraulic hybrid power transmission system comprises an engine, a high-pressure energy accumulator, a low-pressure energy accumulator, a constant-pressure variable pump, a hydraulic transformer, a fixed-displacement hydraulic motor and two hydraulic-control one-way valves. When a vehicle needs to switch between driving / braking conditions, after the control angle of the hydraulic transformer is changed, the two hydraulic-control one-way valves are controlled through the cross feedback of system pressure, so that the self-adaption switching between driving / braking conditions is realized; therefore, the control complexity and the control difficulty of the hydraulic hybrid power transmission system are reduced.

The invention discloses a single-phase direct AC-AC variable frequency circuit based on a lookup table method and a control method thereof. The single-phase direct AC-AC variable frequency circuit based on the lookup table method comprise an LC (inductor-capacitor) filter link and rectifier bridges composed of P and N groups of transistors (VP1 to VP4 and VN1 to VN4). A control link is composed ofa sampling device, a microprocessor and a peripheral component and is used for generating a correspondence table of transistor trigger angles and average output voltages and a load's AC signals of expected frequency and amplitude; according to the expected voltage value of each moment, searching a table for the average output voltage having a minium difference absolute value with the expected voltage value; controlling trigger signals of the transistors according to the trigger angles corresponding to the average output voltage, and controlling, in combination with load current, two rectifierbridge groups to alternately operate according to the expected frequencies. The single-phase direct AC-AC variable frequency circuit based on the lookup table method and the control method thereof are suitable for converting sinusoidal or non-sinusoidal input high-frequency alternating current into low-frequency alternating-current output power; the lookup table method and the pulse equivalency principle are utilized, the average output voltage in each high-frequency period reflects a current expected voltage value; the expected output voltage is imparted to the load through a filter circuit.

The invention discloses a multipath direct current output power supply. The multipath direct current output power supply outputs multipath direct current voltage by setting an AC / DC conversion module,and does not need setting one AC / DC conversion module for output of direct current voltage of each path, thus achieving the aim of reducing the design cost of the multipath direct current output power supply. The multipath direct current output power supply can accurately control the voltage output value of the direct current power supple of each path through a PWM signal generator, and does notneed controlling the output values of multipath direct current voltage by means of a feedback winding, thus realizing the effect of simplifying the control complexity of the multipath direct current output voltage.

A method and device for power adjustment in a user equipment and a base station are disclosed in the present disclosure. The user equipment receives first information which is used to trigger a first operation, and then receives K piece(s) of target information and transmits a first wireless signal. A transmission power value of the first wireless signal is a first power value; the first power value is irrelevant to all piece(s) of target information received prior to triggering the first operation. The K piece(s) of target information is(are) received after triggering the first operation. The sum of K power offset value(s) is used to determine the first power value. The K power offset value(s) are respectively indicated by the K piece(s) of target information.

The invention relates to a register set circuit device supporting out-of-order multiple read-write. The circuit device comprises a multi-port out-of-order write selection controller, a multi-port write selection array, a write instruction queue and a register set file. The circuit is used for a sequential or out-of-order multi-emission multi-execution processor, and the out-of-order multi-read and multi-write problem of a register block circuit is solved. The register set file comprises a specific write selection controller, and a specific assembly line control mechanism based on identifiers is achieved.

The invention discloses a maximum power tracking control method for a variable-speed switched reluctance wind generator. An excitation turn-on angle in an excitation phase is always fixed; any switching tube control mode of chopping or PWM is not adopted; testing is carried out before operation according to different rotating speeds: an excitation turn-off angle and excitation voltage corresponding to maximum output power are recorded in an interval below a rated rotating speed, and the excitation turn-off angle and the excitation voltage corresponding to rated output power are recorded in aninterval above the rated rotating speed, thereby correspondingly compiling the excitation turn-off angles and the excitation voltage at various rotating speeds into a query table; and the excitation turn-off angles and the excitation voltage are queried according to the actual rotating speed as tracking control signals during system operation. The method is simple, feasible and low in loss, and isof practical significance to application of the switched reluctance generator in variable-speed wind power.

The invention provides an on-off magnetic moment time series control method for a microsatellite. The method comprises the following steps: (1) calculating a three-axis magnetic moment; (2) confirming the relationship between each magnetic measurement / control cycle and each satellite control cycle according to the magnetic control precision; (3) comparing the relationships between the calculated magnetic moment and the maximum output magnetic moments of on-off type magnetic torquers, so as to confirm the time series outputs in all the satellite control cycles; (4) completing magnetic measurement twice at the magnetic measurement start time and the magnetic measurement end time in each magnetic measurement / control cycle, so as to complete the on-off magnetic moment time series control. The method has the advantages that a satellite magnetic measurement / control cycle can be acquired according to the magnetic control precision, and pulse width control is converted into an instruction sequence for determining whether a magnetic moment is output in a plurality of control cycles in each magnetic measurement / control cycle or not, so that the magnetic control efficiency is improved, and in-orbit real-time magnetic control of the microsatellite is realized.

The invention relates to a wavelength selecting optical blocker. The wavelength selecting optical blocker comprises a light polarization transformation assembly arranged between a light input / output assembly and a condensation / polarization lens assembly; a light splitting assembly arranged between the condensation / polarization lens assembly and a wavelength channel control assembly and used for spatially separating different wavelengths of incident light signals. The wavelength channel control assembly is composed of two rows of one-dimensional liquid crystal arrays, arranged on the end face of a polarization light transposing assembly and used for controlling the opening, attenuation and closing of wavelength channels; and the polarization light transposing assembly is used for making the incident polarized light deviate to a certain degree and outputting the light from each wavelength channel to set output ports. By means of a liquid crystal unit array, dual-light-path selective wavelength blocking and attenuation functions are realized.

The invention discloses an active damping system of a distributed electric vehicle. The system is applied to an automobile control system. The active damping system comprises information collection devices, an analysis device and damping devices. The information collection devices are correspondingly arranged in front of all tires of the distributed electric vehicle one to one and used for acquiring road surface information in front of all the tires; the analysis device is used for generating vibration information corresponding to all the tires one to one based on the road surface information;the damping devices are correspondingly arranged between all the tires and suspension racks of the distributed electric vehicle one to one and used for controlling the tires corresponding to the vibration information to conduct active damping on the road surface based on the vibration information. The invention further discloses an active damping method of the distributed electric vehicle. According to the system and method, the manufacturing and application cost of the electric vehicle is lowered, the control complexity of the electric vehicle is lowered, the stability of the electric vehicle is improved, and the user experience is improved.

The invention discloses a control method and a control device for a conversion circuit. The control method comprises the following steps: acquiring an electrical parameter of the conversion circuit and a preset value corresponding to the electrical parameter; obtaining a first control quantity based on the electrical parameter and a preset value; performing proportional adjustment and amplitude limiting processing on the first control quantity to obtain a second control quantity, performing amplitude limiting processing on the first control quantity to obtain a third control quantity, and enabling the second control quantity and / or the third control quantity to linearly change along with the first control quantity; and respectively controlling the step-down module and the step-up module by adopting the second control quantity and the third control quantity. The control device corresponds to the control method. The control method and the control device are suitable for preventing the output voltage of the conversion circuit from being overvoltage, the control complexity is simplified, and the working stability of the circuit is improved.

The invention provides an upper limb exoskeleton control method and device based on voice input. The method and device are used for controlling an upper limb exoskeleton by obtaining interaction signals generated by portions, except for an upper limb, of a wearer. The method comprises the steps: obtaining a first interaction signal, and determining a first working mode of the upper limb exoskeleton according to the first interaction signal; obtaining the current position of an arm with the upper limb exoskeleton and dynamic parameters used for performing gravity compensation on the upper limb exoskeleton, and determining a first expected moment track according to the first working mode, the current position, the dynamic parameters and static parameters used for performing gravity compensation on the upper limb exoskeleton; and controlling the upper limb exoskeleton to execute an action corresponding to the first working mode according to the first expected moment track. The upper limb exoskeleton is controlled by adopting the portions except for the upper limb, work depending on the upper limb cannot be affected, meanwhile, the control complexity degree is simplified, and the wearer can conveniently and rapidly use the upper limb exoskeleton.

The invention provides a two-dimensional convolution implementation method and device. The method comprises the steps: one-dimension processing of two-dimensional input data, wherein two-dimensional input data is expanded into one-dimensional data according to a set dimension; convolution core decomposition, wherein the two-dimensional convolution core is decomposed into independent rows or columns according to the expansion mode of the two-dimensional input data; sub-result calculation, wherein the one-dimensional data is subjected to one-dimensional convolution operation respectively with the decomposed convolution core to correspondingly obtain a plurality of one-dimensional sub-result sequences; and sub-result merging, wherein all corresponding data in the multiple one-dimensional sub-result sequences are merged to obtain and output a final two-dimensional convolution calculation result. The invention further provides a two-dimensional convolution implementation device. According to the method and the device, all two-dimensional data can be converted into one-dimensional data, and two-dimensional convolution operation can be completed through one-dimensional convolution operation, so that the control complexity and the on-chip data routing difficulty are greatly simplified.

The invention discloses a three-phase three-wire converter power oscillation suppression method based on a Fermat point. A triangular equiangular center (Fermat point) of a fault line voltage is defined as a new neutral point, and a novel power oscillation suppression method is presented according to a new rule, which is obtained through mathematical derivation, that 'the system does not have active power oscillation when the power generated by positive and negative sequence voltages of a three-phase three-wire system is uniformly distributed in the three phases'. The method comprises the following steps: S1, calculating a phase voltage under a Fermat point coordinate system according to a grid-side fault line voltage; S2, obtaining a three-phase reference current vector for realizing power oscillation suppression according to the obtained new rule of power distribution and power oscillation, and carrying out current tracking control; and S3, realizing system closed-loop control by using a signal obtained through current tracking control as a PWM reference signal. The asymmetric fault problem is simplified by establishing a new neutral point. The method breaks away from complex coordinate transformation and sequence component calculation of a traditional method, and greatly reduces the control complexity.