729results about How to "Simple control logic" patented technology

The invention provides a four-point leveling method of a platform. The method comprises the following steps that: legs extend out to touch a ground, rough regulation is performed in a large dip angle range, the legs stretch to a predetermined height, and fine regulation is carried out in a small dip angle range. The invention also provides a four-point leveling system of a platform, and the system comprises locking sleeve hydraulic legs (7)-(10), legs in-position inductors (19)-(22), a display and control combiner (30), a leveling controller (31), a hydraulic valve set (32), a pressure detection group (33) and a horizontal angle sensor (34). The system is simple in structure and control logic, the risk of side overturning in a control process is avoided, and the frequency of leveling is reduced.

The invention discloses a method for limiting the max. frequency of a frequency-conversion compressor based on outdoor environmental temperature, which comprises: the change range of outdoor environmental temperature is set; the max. limit frequency of the compressor is set based on the range of outdoor environmental temperature; a temperature sensor senses the outdoor environmental temperature; the relationship is judged between the sensed outdoor environmental temperature and the change range of environmental temperature based on which the max. limit frequency of the compressor is set; the max. limit frequency for the frequency-conversion running of the compressor is determined based on the relationship between the sensed outdoor environmental temperature and the change range of environmental temperature based on which the max. limit frequency of the compressor is set. The method improves the controlling logic for the frequency-conversion compressor, so that the compressor will not breakdown because the compressor increases frequency and accelerates without limit depending upon the outdoor environmental temperature.

The present invention disclosed herein is an asynchronous switch for an network on chip application making possible between IP (Intellectual Property) communication among various IPs in the network on chip. The asynchronous switch according to the present invention in which comprises a data input unit for receiving and storing a plurality of data flits, and confirming whether a kind of each data flit is a header flit or a payload flit according to a transmission request signal; an output port arbitration unit for outputting an output port selection signal showing a output priority of the data by receiving a header flit request signal, final payload flit process request signal, routing information of the header flit, and the a arbitration request signal from the data input unit; and a data output unit for receiving a header storage request signal and a payload storage request signal from the data input unit, temporarily storing the data flit inputted from the data transmission path setting unit, transferring header and payload storage completion signals indicating that the data flit is stored to the data input unit, and outputting the temporarily stored data flit to a designated port according to a pre-set order.

A system and method for controlling a compressor recirculation valve involves establishing a compressor surge flow threshold expressed in terms of a compressor corrected volume air flow rate. A torque-based engine management system computes a desired mass air flow rate in accordance with a torque request and other operating / predetermined data. The desired mass air flow rate is converted into a desired, corrected volume air flow rate, which is then compared to the compressor surge flow threshold. The controller is configured to open the valve when the desired corrected volume air flow rate is less than the compressor surge flow threshold. A hysteresis function is implemented by providing a surge flow hysteresis threshold that is offset from and greater than the initial compressor surge flow threshold. The controller is configured to close the recirculation valve when the desired corrected volume air flow rate becomes greater than the surge flow hysteresis threshold.

The invention discloses a global satellite navigation system multimode radio frequency receiving method and apparatus for military and civil use, pertaining to the radio frequency communication technique field. The method provides a frequency programming in which the different narrowband signals are as mutual mirror-images of a mirror-image inhibition receiver, according to the civil narrowband signals passing through the mirror-image inhibition receiver, under the control of a time division multiplexing control system, the local oscillation frequency input from a frequency synthesizer to a radio-frequency frequency mixer and baseband frequency mixer can be periodically switched, thereby realizing the multimode paralleling receiving of the narrowband signals; while the broad band signals pass through a direct lower frequency conversion receiver, selecting a local oscillation frequency of the radio-frequency frequency mixer identical to the center frequency of the wideband GNSS, thereby realizing the receiving of each wideband mode signal for military use; the apparatus includes a mirror-image inhibition receiver and a direct lower frequency conversion receiver. The invention implementing compatibility and coordinating performance for military and civil use, and also can close the military or civil passage way for implementing the low-power consumption application requirement.

The embodiment of the invention provides a power converter. The power converter comprises a first terminal, a second terminal, a third terminal and N paths of multi-level bridge arms, wherein the first terminal and the second terminal are connected with a direct current, the third terminal is connected with an alternating current, the N paths of multi-level bridge arms are connected to the first terminal and the second terminal in parallel, the N paths of multi-level bridge arms work in a staggered and parallel manner, each multi-level bridge arm of the N paths of multi-level bridge arms comprises alternating current nodes, multiple time-varying levels are generated at the alternating current nodes, and the quantity of the multiple time-varying levels is greater than two. The power converter further comprises a coupling inductor, wherein the coupling inductor comprises N windings coupled by a common magnetic core, one end of each winding of the N windings is connected with the alternating current nodes of one multi-level bridge arm of the N paths of multi-level bridge arms respectively, and the other end of each winding of the N windings is connected to the third terminal. Due to the technical scheme of the invention, the control logical of the power converter is simplified.

The invention discloses a method for adjusting running speed of a robot in real time. Movement elements are analyzed through a demonstrating track, track planning and interpolation are carried out, and an interpolation command is corrected by inputted speed adjusting parameters to achieve the purpose of adjusting the speed in real time. According to the control command corrected by the method, a curve can be changed smoothly and continuously, so that stress on a mechanical system is not impacted or changed suddenly, a control effect is soft, and loss on moving parts is reduced. Meanwhile, the method is simple in control logic and small in calculated amount, and meets control requirements on instantaneity of a robot control system. When the speed is adjusted, only a standard process requires to be demonstrated according to actual working conditions, then a monitoring terminal is debugged to transmit different speed adjusting commands, a robot control system responds the received speed adjusting parameters so that the effect of changing the running speed of the robot can be achieved, work complexity of operators is greatly simplified, the field processing efficiency is improved, and standardized operation of the robot is facilitated.

The invention relates to a method and a device of soft start of a bus voltage in an uninterruptible power supply. The method comprises the following steps: S1. transmitting energy after power conversion to a positive and negative bus, and charging the bus capacitance in a soft start manner; and S2. after charging is finished, supplying power to an inverter after the power conversion is carried out on city electric energy so as to generate contravariant voltage output, wherein, the energy needed by the soft start is provided by a soft start energy providing circuit which comprises a first relay, a second relay, a third relay, a resistance R and a direct-current source; the bus capacitance is charged in a soft start manner through controlling the starting or closing of the first relay, the second relay, and the third relay. The invention can be used in discharging topology of a non-segregated Boost type direct-current source, the control logic is simple, and the cost is lower.

The invention provides a foundation-based atmosphere profile microwave detector. The detector is characterized by comprising an antenna feeder unit, a radiometer receiving unit and a scanning mechanism unit, wherein the antenna feeder unit comprises two independent antenna feeder sub-units for two wavebands and is provided with two-frequency independent reflective surfaces; the two independent antenna reflective surfaces are arranged at two ends of the output shaft of a scanning motor respectively, can realize beam scanning through motor rotation, and are used for receiving microwave radiation of atmosphere and an internal calibration reference source; the radiometer receiving unit comprises a directional coupler, a radio amplifier, a power divider, a band pass filter, a square law detector, an integrator and a video amplifier, and is used for realizing intermediate frequency detection of a received signal; the scanning mechanism unit comprises a scanning shaft, a scanning step motor, two front ends and a sub-miniature type A (SMA) connector; and driven by the scanning motor, the scanning shaft drives the two reflective surfaces to circumferentially scan so as to realize observation on sky in different incident angles and measurement on an internal calibration blackbody and acquire data which is acquired in a measurement and periodic internal calibration unit.

The invention relates to a linked landing gear cabin door folding and unfolding device and belongs to the technical field of aircraft manufacturing. The linked landing gear cabin door folding and unfolding device comprises a landing gear, a rotation shaft I, a rotation shaft II, a rotation shaft III, a rotation shaft IV, an upper supporting rod, a rocker arm I, a rocker arm II, a rocker arm III, a lower supporting rod, a folding and unfolding actuation cylinder, a connection rod I, a connection rod II, a connection rod III, a goose-shaped rocker arm, a support column protection plate and an airplane wheel protection plate. By virtue of the linked landing gear cabin door folding and unfolding device, the cabin door folding and unfolding actuation system is simplified, so that the occupying space of the device in an airplane is reduced and the structure weight is reduced; by virtue of the design of a linked mechanism, the order of folding and unfolding the landing gear, the airplane wheel protection plate and the support column protection plate is ensured, the control logic is simplified and the reliability is improved; the airplane protection plate is closed when the landing gear is unfolded, the pneumatic resistance can be reduced; the takeoff and landing performances of the airplane are improved; the damage to the airplane, caused by entrance of foreign materials in a landing gear cabin, can be avoided.

The invention provides an air conditioner air outflow control method and device, a storage medium and an air conditioner. The method comprises the steps that when a cold air preventing mode is over, it is judged that the temperature of an indoor coil pipe of the air conditioner belongs to which one of multiple preset indoor coil pipe temperature set ranges, the air gear area where an indoor draught fan of the air conditioner is located is determined on the basis of the indoor coil pipe temperature set range to which the indoor coil pipe temperature belongs, and the corresponding draught fan control logic is executed. According to the air conditioner air outflow control method and device, the storage medium and the air conditioner, in the cold air preventing mode, a user is prevented from being directly blown by cold air; and after the cold air preventing mode is quitted, the rotation speed of the inner draught fan is slowly adjusted, the air outflow temperature is guaranteed, and the comfort experience of the user is improved.

The present invention disclosed herein is an asynchronous switch for an network on chip application making possible between IP (Intellectual Property) communication among various IPs in the network on chip. The asynchronous switch according to the present invention in which comprises a data input unit for receiving and storing a plurality of data flits, and confirming whether a kind of each data flit is a header flit or a payload flit according to a transmission request signal; an output port arbitration unit for outputting an output port selection signal showing a output priority of the data by receiving a header flit request signal, final payload flit process request signal, routing information of the header flit, and the a arbitration request signal from the data input unit; and a data output unit for receiving a header storage request signal and a payload storage request signal from the data input unit, temporarily storing the data flit inputted from the data transmission path setting unit, transferring header and payload storage completion signals indicating that the data flit is stored to the data input unit, and outputting the temporarily stored data flit to a designated port according to a pre-set order.

The invention discloses a travel-increasing control system of a travel-increasing type electric automobile. An engine controller carries out dynamic control to the work of an oil injector and an ignition coil, and the engine controller calculates an external torque request according to a regulating torque, a reversed towing torque, a combusting torque and a target torque of an engine crankshaft of a current engine ahead of time and sends the external torque request to a travel-increasing controller. The travel-increasing controller and a generator or a motor response to the external torque request, engine rotating speed control is achieved through the balance control of the crankshaft torque, and the practical rotating speed output by the travel-increasing control system is in accordance with a target rotating speed. The travel-increasing control system of the travel-increasing type electric automobile can achieve the control to the rotating speed output by the travel-increasing control system without an electronic-control air damper, the engine can adopt a non-throttle air inlet mode, the control logic of the engine controller is simple, a single-cylinder or double-cylinder motorcycle engine controller and an economical engine controller can be used, and efficiency cost maximization can be achieved.

Disclosed herein is a five-level rectifier that includes first, second, third, fourth power semiconductor switches, first and second DC bus capacitors, a phase capacitor, and first, second, third and fourth diode modules. The first, second, third and fourth diode modules are connected in series, the first and second DC bus capacitors are connected in series, and the second and third power semiconductor switches are connected in series. The first diode module is connected to the first DC bus capacitor and the first power semiconductor switch, and the fourth diode module is connected to the second DC bus capacitor and the fourth power semiconductor switch. The phase capacitor has a terminal connected to the first and second power semiconductor switches, and another terminal connected to the third and fourth power semiconductor switches.

The invention discloses a multi-split air conditioning system and a status switching control method therefor. The multi-split air conditioning system comprises an outdoor unit and indoor units installed in multiple rooms. The outdoor unit comprises a compressor, a compressor controller and a condenser; each indoor unit comprises an electronic expansion valve, an electronic expansion valve driver, an evaporator, an indoor air temperature detector disposed in one room, and a refrigerant superheat detector disposed at an outlet of the evaporator, wherein the compressor forms a loop with the condenser, the electronic expansion valve and the evaporators. The status switching control method includes: acquiring a difference between the indoor actually-measured temperature of one room and the preset temperature to determine operation status of the electronic expansion valve driver and transmit the status information to the compressor controller, so that the position number and position of operation frequency of the compressor are determined. Total refrigeration output by the multi-split system can be controlled simply and efficiently and can be reasonably distributed to the rooms by the method, so that the refrigeration for each room matches with heat load of the room.

The invention discloses a central arithmetic type multi-split air conditioner system and a state switching control method of the central arithmetic type multi-split air conditioner system. The operating states of electronic expansion valves and the operating states of compressors are controlled through a central arithmetic unit, the operating frequency and the corresponding gear of each compressor are determined so that the total refrigerating capacity output by the central arithmetic type multi-split air conditioner system can be controlled easily and efficiently, the refrigerating capacity can be reasonably distributed to rooms, and the refrigerating capacity obtained by each room is matched with the heat load of the room. The central arithmetic unit receives temperature signals of all the rooms, carries out centralized arithmetic processing, sends instructions to the electronic expansion valves and the compressors of indoor units, and has control over execution behaviors of the electronic expansion valves and execution behaviors of the compressors. According to the central arithmetic type multi-split air conditioner system and the state switching control method of the central arithmetic type multi-split air conditioner system, mutual influence among the indoor units is taken into overall consideration, the fluctuation range of the indoor temperature is reduced, the probability that the compressors are in the shutdown state in the operating process of the central arithmetic type multi-split air conditioner system is greatly reduced, loss caused by frequent starting and frequent shutdown of the compressors is reduced, and the fluctuation, caused by starting and shutdown of the compressors, of the indoor temperature can be further reduced.

The invention provides a tire pressure monitoring-car security integrated system for realizing car security and tire pressure monitoring and method thereof In the system, a conventional tire pressure monitoring system and car security system are integrated with each other. The learning machine or signal match device of the &Inner is also combined with the remote control portion of the latter. The central monitor portion of the former is combined with the car security host machine of the latter. Control logic and electrical construction thereof is also optimized. Therefore, the invention is reasonable in its design and low cost. In addition, use convenience is also improved and great commercial success may be realized.

A pixel pre-fetching device of movement compensation module in AVS video hardware decoder consists of decision control module, write buffer storage unit, read buffer storage unit, gating unit, forward pre-fetching buffer storage, backward pre-fetching buffer storage and reread buffer storage. The method utilizing said device to pre-fetch pixel is also disclosed.

The invention provides a control method and a control device for a variable-frequency air conditioner, and the variable frequency air conditioner. The control method for the variable-frequency air conditioner comprises the following steps: acquiring an energy requirement value of an indoor unit, a set temperature of the air conditioner and the indoor temperature after the heating mode of the variable-frequency air conditioner is started; determining a first target running frequency of a compressor of the variable frequency air conditioner according to the energy requirement value of the indoor unit, the set temperature of the air conditioner and the indoor temperature, and controlling the compressor to run under the first target running frequency, wherein the energy requirement value of the indoor unit is determined according to the nominal refrigeration capacity of the indoor unit. The control method provided by the embodiment of the invention is capable of optimizing the control logic of the variable-frequency air conditioner so that the compressor is capable of reaching a target frequency and is kept running continuously within a reasonable short time after the variable-frequency air conditioner is started, so the heating capacity of the air conditioner under a low-temperature environment is increased, and the heating comfort is improved.

A control apparatus for use with an electric power conversion system which is equipped with a dc / ac converter connected to an electric rotating machine and a capacitor joined to input terminals of the dc / ac converter. The control apparatus stores an angle of rotation (i.e., start angle θ0) of the electric rotating machine before start of control of energization of the electric rotating machine to discharge the capacitor and determines command currents idr and iqr which will result in zero (0) torque in the electric rotating machine. The control apparatus includes a command current correcting circuit which corrects the command currents idr and iqr by a difference between a current angle θ of rotation of the electric rotating machine and the start angle θ0, thereby avoiding constant rotation of the electric rotating machine when the capacitor is discharged.

The invention discloses an industrial Internet edge calculating device which comprises a connecting layer, a sensing layer, an analyzing layer, a control layer, a predicating layer, a data lake and adata service gateway. The connecting layer is used for establishing a protocol controller, converting data pump original data to a data message and forming an equipment driver which is introduced andled out by a data pump. The sensing layer is used for defining a sensing condition and establishing a triggering action response event. The analyzing layer is connected with the data pump, analyzes real-time original data which are acquired by the connecting layer and generates an analysis result event. The control layer is used for acquiring an abnormal action response event and adjusts an operation parameter of industrial equipment which is connected with a bus. The predicating layer is connected with the connecting layer, establishes an equipment fault predicating model through a deep convolutional neural algorithm, acquires the original data and outputs a control suggestion event. The data lake stores data messages, alarm events, analysis result events and control suggestion events. The invention further discloses a realizing method of the industrial Internet edge calculating device.

A battery charge / discharge control apparatus for a vehicle capable of driving an electric motor by a battery is provided. Temperature of the battery is detected, temperature history distribution of the battery after start of temperature detection is calculated, and a lifetime workload of the battery is calculated on the basis of this temperature history distribution of the battery. A permissible value of a workload increase rate indicating a workload to increase per unit distance is calculated on the basis of the lifetime workload of the battery and a travel distance of the vehicle. An actual workload increase rate of the battery is compared with the permissible value of the workload increase rate. In the case where the actual workload increase rate is larger than the permissible value of the workload increase rate, an output is restricted from the output of the battery restricted in a normal driving mode if necessary by a restricted value based upon a difference between the actual workload increase rate and the permissible value of the workload increase rate. This makes it possible to carry out lifetime prolonging control for the battery more accurately by setting up an appropriate charge / discharge permissible amount in accordance with temperature change of the battery in the past.

The invention discloses a distributed database management system, method and device and a storage medium. The system comprises a database service node, a log node and a storage node. The method comprises: a database server configured on the database service node generating a corresponding first database log according to a logic storage address of target data and sending the first database log to alog server configured on the log node; the log server converting the first database log into a corresponding second database log according to the mapping relationship between the logic storage address and the physical storage address of the target data, and sending the second database log to a storage server configured on a storage node where the target data is located; and the storage server redoing the second database log to obtain an operation result of the target data. According to the technical scheme provided by the invention, the coupling and complexity between the database service andthe distributed storage are reduced through the log node, and the data of the operation does not need to be directly sent, so that the network communication burden between the underlying storage is reduced.

This invention discloses a control method for data transfer between two main lines with different transfer speed. It includes the following aspects: read FIFO and write FIFO for data transfer in different direction; write buffer 0 and 1 for collecting data from the write FIFO; a read buffer. The advantages of this invention are as follows: the control logic of read and write is brief; less write depth could show perfect efficiency; the write data stay in write FIFO for a short time so that the write operation can be generated earlier; data transfer can be managed with a flow style, etc.

The invention discloses a modulation method for reducing switching loss of a current source PWM rectifier. The current source PWM rectifier comprises a grid-side filter structure formed by an inductor L and a capacitor C, a three-phase bridge arm mainly formed by fully-controlled switching tubes S1, S2, S3, S4, S5, and S6 and an output-side circuit structure formed by a diode D and two discrete inductors Ldc. The modulation method particularly comprises the following steps: 1) a space vector of three-phase CSR current is obtained; 2) three-phase grid voltage is divided according to 30-DEG / sector; 3) an ampere-second balance method is used for calculating the actuation time of a corresponding effective vector state; 4) an actuation order of corresponding current vectors is determined; 5) the control pulse signals of each fully-controlled switching tube are obtained; and 6) the control pulse signals obtained in the fifth step are subjected to state signal distribution, and switching control on each fully-controlled switching tube is thus carried out. The current commutating time between devices can be effectively shortened, and the switching loss is reduced.

An aircraft capable of vertical takeoff and landing (VTOL) including one or more propulsion systems gyroscopically mounted (i.e. rotatable about x- and y-axes) to a rigid airframe is disclosed. Each “wing” includes a propulsion system mounted to an axle that is rotatably attached to a wing mount, which in turn is pivotably mounted to the exterior of the airframe. The propulsion systems are electronically grouped according to their position relative to the airframe, such that one controller can control all the propulsion systems on the right or left side of the aircraft, resulting in control logic that is far more intuitive and convenient than that taught in the prior art. A method of operating an aircraft utilizing this improved control logic is also disclosed.

The invention provides a multi-channel FIFO (First In First Out) buffer and a control method thereof. The FIFO buffer comprises a data storage module, a read and write pointer control module, a state identification module and a data selection module, wherein the data storage module is used for storing data and comprises an internal storage unit, an input end register array, an output end register array and a first multiplexer; the input end register array R2 comprises a plurality of input end registers; the output end register array comprises at least one output end register. A plurality of pieces of input data of a plurality of transmission channels can be transmitted at one time; after the data of the plural transmission channels is pieced to write the input end register array fully, the data is then written into an internal memory at one time, so that the problems of resource waste of the internal memory caused by wide data bit and read and write performance of the internal memory are avoided.

A system and method for handling denormal floating point operands when the result must be normalized. A leading zero counter (lzc) on the operand B (opB) is used to limit alignment shifts when opB is denormal but is much greater than the product of operands A and C, i.e. AC. By limiting the additional shift of B during normalization, by the number of leading zeros in opB, no increase is needed in the output bus of the alignment shifter. Furthermore, the additional shift may be done either in the alignment shifter, or postponed to a later stage in the pipeline, where the result is normalized.

The invention relates to an IF polyphase filter for filtering received RF signals. The signals are downconverted into intermediate frequency signals before filtering them in the IF polyphase filter. The IF polyphase filter comprises means for defining a passband for the IF polyphase filter. The IF polyphase filter further comprises a passband adapting element for setting the passband of the IF polyphase filter in positive or in negative frequencies. The invention further relates to a receiver comprising the IF polyphase filter according to the invention. The invention further relates to a method for filtering received RF signals by using an IF polyphase filter. The method comprises downconverting the received RF signals into intermediate frequency signals before filtering them in the IF polyphase filter, and defining a passband for the IF polyphase filter. The passband of the IF polyphase filter is set in positive or in negative frequencies.