352 results about "Load ratio" patented technology

The present invention provides a dispersant and foaming agent combination that is useful in the production of gypsum wallboard and other aqueous cementitious products, a method of forming a gypsum wallboard and a gypsum wallboard. The dispersant in the combination according to the invention is a naphthalene sulfonate-aldehyde condensate alkali salt polymer having a weight average molecular weight of from about 17,000 to about 47,000. The alkali is preferably an alkali metal and/or an alkaline earth metal. The aldehyde is preferably formaldehyde. The foaming agent used in the combination according to the invention is a soap, preferably an alkali salt of an alkyl ether sulfate and/or an alkyl sulfate. The combination of a high molecular weight dispersant and a foaming agent produces a gypsum wallboard core effect that more efficiently entrains air (i.e., creates void space), thereby lowering overall board weight without detrimentally affecting strength. A gypsum wallboard formed using the dispersant and foaming agent combination according to the invention exhibits a higher nail pull value than gypsum wallboard formed using a conventional dispersant and a foaming agent at the same solids loading ratio.

The invention discloses a cold-chain logistic stowage intelligent recommendation method based on spectral clustering. Scores of users for a stowage line are conveyed through a cold chain for cold-chain logistic stowage intelligent recommending, a score matrix is built, the Euclidean distance is used for calculating the user similarity, a degree matrix is used for calculating a Laplacian matrix, feature vectors are obtained by calculating feature values of the orderly Laplacian matrix, a K-means algorithm is used for clustering the feature values to obtain a user group with the similar interesting stowage line, and a stowage line is recommended inside the user group with the similar interesting stowage line, so that cold-chain logistic stowage intelligent recommending is achieved, the cold-chain logistic vehicle non-load ratio is lowered, and the profit rate of cold-chain logistic transport vehicles is increased.

A highly versatile exercise apparatuses is disclosed. More particularly, the invention relates to a cable crossover exercise apparatus including a central weight stack and opposed extension arms. The invention also relates to a functional lift exercise apparatus including a central weight stack and substantially parallel extension arms. The invention further relates to a cable type exercise apparatus employing a pulley assembly with a 4:1 load ratio.

The invention discloses a method and a device for realizing load balance among neighboring cells in order to solve the problems in the prior art such as low efficiency of the realization of the load balance among the neighboring cells and low after-balancing mobile communication network quality. The method comprises: determining to-be-regulated cells requiring load balance currently according to the load ratio of cells; according to the performance information of the neighboring cells of the to-be-regulated cells, selecting target cells to participate in load balance with the to-be-regulated cells from the neighboring cells; according to the performance information of users in the to-be-regulated cells, selecting target users to participate in load balance from the users in the to-be-regulated cells; and adjusting the target users to the target cells. According to the technical scheme of the invention, the effectiveness of the realization of load balance among neighboring cells is improved and the quality of a mobile communication network is improved.

The invention discloses a method for calling a taxi. The method comprises the following steps that: a call request for a taxi sent by a mobile terminal is received; identifications of the mobile terminal are picked up from the call request, and the mobile terminal is positioned according to the identifications; according to the position of the mobile terminal, a matched noload taxi team is obtained; and the call connection between the mobile terminal and the noload taxi terminals of the noload taxi team is established. The invention also discloses a corresponding system, which replaces the manual seating by a simulated seating to realize the service function of calling a taxi, thereby improving the system in the calling hot line treatment capability, saving management cost and simultaneously reducing the no load ratio of a taxi.

The invention provides a braking force distribution method and device for multiple units. The method comprises acquiring a target braking force of an entire train at present, wherein the target braking force of the entire train is the maximum braking force required to stop the entire train; acquiring a braking force capability value that can be applied by each unit of the entire train at present, wherein the braking force capability value of each unit includes a sum of an electric braking force and an air braking force that can be applied by all bullet trains and trailers in the unit; according to the target braking force and the braking force capability value of each unit at present, distributing a braking force target value of each unit on the basis of the load ratio of each unit, wherein the sum of the braking force target values of all the units is equal to the target braking force. By applying the method, the situation that the braking force difference between the units is too large when the bullet train or the trailer in a certain unit fails is avoided, so that the safe operation of the train is guaranteed.

The invention relates to a visualized implementation method oriented to operation load state monitoring of a distribution network. The visualized implementation method comprises the following steps of: (1) setting a circuit state monitoring limit value and a load level color configuration of the distribution network; (2) selecting circuits to be monitored, acquiring the number and names of the circuits to be displayed, and carrying out sector-shaped partitioning on an initial circle according to the number of the circuits; (3) carrying out topological analysis on the distribution network to form a tree network of the distribution network; (4) carrying out breadth and depth topological search on the circuits to form a tree structure level record; (5) drawing a circuit level relationship graph according to the tree structure level record; (6) calculating load ratios of the circuits according to the measuring data of the circuits; and (7) filling a sector-shaped region where the circuits are located according to the load ratios and the load level color configuration. According to the visualized implementation method disclosed by the invention, the generated visualized graph is adaptive to the characteristics of the distribution network; simple and intuitive expression and high information enrichment are achieved; and the load monitoring capability of a real-time monitoring system of the distribution network can be remarkably promoted.

An electronic control unit corrects ignition timing according to changes in an internal EGR amount accompanying actuation of a variable valve actuation mechanism used in an internal combustion engine. The electronic control unit computes a base correction amount AVVTb based on an engine speed NE and an engine load ratio KL. The control unit multiplies the base correction amount AVVTb by the ratio of a square number of an actual valve overlap amount realOL to a square number of a target valve overlap amount tOL, thereby computing a VVT correction amount AVVT of ignition timing. As result, the engine is easily and properly controlled based on the relationship between the state of the variable valve actuation mechanism and changes in the internal EGR amount.

The invention relates to a power distribution network planning method based on maximum power supply capacity, which comprises the following steps of: obtaining status quo power grid data and load forecast data; judging whether the distance between a new load and an existing substation is longer than a first threshold value; if the distance between the new load and the existing substation is more than the first threshold value, which indicates a blind area for power supply exists, taking Class C measures, and establishing a new substation; otherwise, calculating the maximum power supply capacity of the existing power grid; when the maximum power supply capacity is higher than the planned total load, the load of each main transformer is matched with the maximum power supply capacity and each load horizontally meets the requirements of safety verification of the main transformers N-1, stopping the process, otherwise, taking Class B and C measures to adjust the total power supply capacity; or taking Class A measures to adjust the distribution of loads among the main transformers. By adopting the method, the dependence on capacity-load ratio indicators can be reduced, the potential of the existing network can be fully utilized, the construction of power grids can be postponed, and the problems of land shortage and high cost for construction of power grids can be solved; and the allocation scheme of loads matched with the allocation of the maximum power supply capacity can be provided to achieve the purpose of fully utilizing the power supply capacity of the power grids.

The invention discloses a gravity center self-balance device for a high-order picking truck. The gravity center self-balance device comprises a movable counterweight mechanism and a control system, wherein the movable counterweight mechanism comprises a counter weight mechanism base, a longitudinal movement mechanism, a transverse movement mechanism and a counter weight device; the control system comprises a plurality of pressure sensors and a controller; and the controller comprises a counter weight moving control unit and a vehicle running state control unit. The gravity center self-balance device detects a load signal of each wheel of a vehicle through the pressure sensors and transmits the load signals to the controller; when a load ratio of the wheels exceeds a set standard, the controller starts a stepping motor to correspondingly move a counter weight box of the vehicle; and when a balance requirement on the gravity center of the whole vehicle cannot be met after the counter weight box reaches an ultimate position, the controller adjusts the speed, the acceleration and the steering angle of the vehicle so as to guarantee the running stability and the running safety of the vehicle. By the gravity center self-balance device, the problems of overweight static balance, overlarge volume, lower stability and the like of the conventional high-order picking truck are solved.

The invention discloses a drive skid prevention control algorithm for a four-wheel independent drive electric automobile, and belongs to the field of new-energy automobile control. The method includes the steps of firstly, estimating the largest torque output value Tmax of the whole automobile through combination with rotating speed information of four wheels and through the largest torque estimation algorithm; secondly, calculating the torque output value Tf of the front wheels according to the calculation result obtained in the first step and according to the load ratio of the front wheels to the rear wheels; thirdly, estimating the whole automobile speed V and the acceleration a through the rotating speed omega f of the front wheels; fourthly, calculating the actual slip rate S of the rear wheels and the change rate (please see the specification) of the rear wheels according to the result obtained in the third step and the rotating speed omega r of the rear wheels; fifthly, calculating the torque output value Tr of the rear wheels according to the results obtained from the first step to the fourth step and the target slip rate S* of the rear wheels and through a sliding membrane control algorithm. According to the method, no additional hardware structure is needed, cost of system is reduced to the maximum extent, reliability of the system is ensured, and the method and the system can be widely applied to the four-wheel independent drive electric automobile.

The invention provides a server load balancing method and device. The method comprises steps of calculating a weight corresponding to the load amount for each server according to hardware resources contained in each server; arranging virtual nodes for each server, wherein the ratio of virtual node numbers of the servers is identical to the ratio of weights of the servers; and selecting a corresponding virtual node for a received service request according to load balancing rules, sending the service request to a server corresponding to the selected virtual node for processing. The corresponding weight of reflecting the load amount is calculated for each server according to differences among hardware resources of the servers, then the calculated weights are mapped into the same number of virtual nodes, and load amounts of the virtual nodes are balanced, so that the load ratio among physical nodes is balanced.

The invention relates to a hybrid type industrial robot. The hybrid type industrial robot is composed of three linear motion shafts X, Y and Z, a swing shaft C and two rotary shafts A and B. Primary forms of the linear motion shafts are cantilever type (ox-head type) rectangular coordinate manipulators. The rotary shaft B is connected with the tail end of the shaft Z which does up-down linear motion. The swing shaft C and the rotary shaft A are arranged under the rotary shaft B and driven by the same. The rotary shaft A at the tail end is connected to the tail end of the swing shaft C through a connecting side plate and drives loading motion. The rotary shafts and the swing shaft actually are motion shafts at the tail end of a joint robot. Thus the hybrid type industrial robot is composed of the rectangular coordinate manipulators and the motion shafts at the tail end of the joint robot. By the hybrid type industrial robot, rapid and highly difficult reclaiming motion is achieved, load ratio is increased, use efficiency of an injection molding machine is improved, and space for mounting is smaller.

In a method for representing gray scales on a plasma display panel (PDP), and a PDP driver using the method, a load ratio of input video signals is generated. When the load ratio is low, a plurality of subfields is generated where the weight of the least significant bit (LSB) subfield from among the subfields may be minimized, (wherein the LSB subfield is a subfield with the minimum weight from among the subfields), and the minimum number of sustain pulses may be allocated to the LSB subfield.

The invention discloses a lignin degradation solution and a preparation method thereof as well as a method for degrading lignin by using the lignin degradation solution, and belongs to biochemical and bio-refinery methods to solve the problem that the efficient biodegradation of lignin is difficult to realize by adopting single ligninase of laccase at present. The lignin degradation solution is prepared by the following steps: dissolving laccase and manganese peroxidase into an acetic acid-sodium acetate buffer solution of which the pH value is 4-6 in an enzyme load ratio of (10:1)-(1:5) to ensure that the enzyme loads of the laccase and manganese peroxidase are respectively 1U/ml-50U/ml and 1U/ml-50U/ml; and then adding 1-10mM of MnSO4 and 0.1-1mM of H2O2, wherein the laccase and manganese peroxidase are obtained by fermenting white rot fungi to obtain extracellular crude enzyme liquid and then performing separation and purification respectively. According to the lignin degradation solution and the methods disclosed by the invention, the synergistic oxidative degradation of macromolecular lignin with rich structural diversity is realized, and compared with a degradation reaction system with single ligninase, the degradation rate of the macromolecules of the lignin can each 30-50%, the degradation conversion efficiency is significantly improved, and the degradation solution and the methods can be applied to the fields of bio-refinery of lignocelluloses, biological pulping or environmental treatment and the like.

The invention provides a loaded rare-earth three-way catalyst used for the copolymerization of carbon dioxide and epoxide, which is prepared through constant-temperature sealed magnetic stirring grinding or mechanical oscillating grinding of a rare-earth three-way catalyst and a carrier. The load ratio between the mol of Zn in the rare-earth three-way catalyst and the mol of the carrier is 1:0.5 to 1:7. Catalytic activity is more than 7000g of polymer per mol of Zn, which is increased by more than 30 percent to 48 percent compared with the catalytic activity of the rare-earth three-way catalyst which is not supported used for the copolymerization of CO2 and propylene oxide. The number average molecular weight of the polymer produced is more than 100,000 and the alternating structure of the carbon dioxide and the epoxide is more than 95 percent.

A 3-level T-type neutral point clamped (NPC) inverter/rectifier is disclosed in which neutral point clamping is dynamically enabled/disabled responsive to load, e.g. enabled at low load for operation in a first mode as a 3-level inverter/rectifier and disabled at high/peak load for operation in a second mode as a 2-level inverter/rectifier. When the neutral clamping leg is enabled only under low load and low current, middle switches S2 and S3 can be smaller, lower cost devices with a lower current rating. Si, SiC, GaN and hybrid implementations provide options to optimize efficiency for specific load ratios and applications. For reduced switching losses and enhanced performance of inverters based on Si-IGBT power switches, a hybrid implementation of the dual-mode T-type NPC inverter is proposed, wherein switches S1 and S4 comprise Si-IGBTs and switches S2 and S3 of the neutral clamping leg comprise GaN HEMTs. Applications include electric vehicle traction inverters.

The invention relates to a method for planning substations of a power distribution network. The method comprises the following steps that each 110-kV substation is arranged according to the N-1 principle distribution pattern, the capacity-load ratio ranges from 1.8 to 2.1, each 35-kV substation is arranged according to the N-1 principle distribution pattern, the capacity-load ratio ranges from 1.6 to 1.8, the distribution transform capacity-load ratio of each 10-kV substation ranges from 1.5 to 2.0; a boost and expansion project, the number of newly established substations and the main varying capacity are determined according to the target capacity-load ratio of each substation and the current operation and distribution situation of the substations of the power distribution network, and then the station location of each substation and the power supply radius are determined; the minimal investment and the minimal annual operation cost serve as objective functions, the constraint condition refers to the fact that the load requirement is satisfied, and an optimized operation is conducted through the objective functions; the minimal investment and the minimal annual operation cost of substation planning are determined; the number of the substations needing to be newly established and the number of the substations needing capacity increase are obtained through calculation and therefore the problems that the load rate of an existing circuit is ultra-high, the capacity-load ratio of each substation is ultra-low, and operation and dispatching are not flexible can be solved through the minimal investment and the minimal annual operation cost.

A seat provides a band-like support for the body sides of a user so as to reduce the supporting pressure on the user's lumbar and to hold the user's upper body stably. In this seat, the center of a load to be received in regions symmetrically divided to a vertical central line of the seat are positioned outside of a back region defined by left and right angulus inferior scapulae and by the upper ends of iliac bones. Moreover, the load ratios in the individual regions are not more than 25% in the region corresponding to a region extended downward from the back region.

In a conventional image display apparatus, since display load ratios for respective lines are different, voltage drop amounts are also different and a difference in brightness occurs in spite of giving the same inputted luminance signal, so that image quality of display image is degraded. In the case where signals at the same luminance level are inputted and displayed, for a pixel on a display panel, an ON pattern of a subfield in one field is changed when a line load ratio of a line including the pixel is changed. That is, an image display apparatus using a display panel having a plurality of pixels is configured so as to include, for each of the plurality of pixels connected to one driving electrode, a load calculating means that calculates the load ratio and a luminance correcting means that calculates a drop amount in luminance level of an inputted video signal for correction.

The invention discloses a detection method of automotive constant speed full load fuel consumption rate. A gear-box high gear is hung on a chassis dynamometer of an automobile; under the full load mode of the engine which is in the position of the maximum accelerator pedal, the fuel oil consumption of the automobile is detected by keeping a constant automobile speed at stipulating speed point in a regulated time; meanwhile the output power of a driving wheel of an engine full load automobile is measured; then the loss power of the stipulating automobile speed point and the whole system of a rack is measured; the loss power of engine accessory is set at the stipulating speed point; the three powers are summed and the normal-state power is revised to obtain the output power of the engine at the speed point; and the full-load fuel consumption rate of the automotive engine is obtained by calculation, and the load ratio of the engine is obtained.

Active devices in communication with an access node of the wireless communication system through a mixed carrier are determined. Based on determined channel conditions, a determined RF load, and a determined load ratio of the at least one mixed carrier, a modulation and coding scheme and a frequency band are selected. Using the selected modulation and coding scheme and frequency band, a mixed broadcast is transmitted on the mixed carrier.

An apparatus for presenting an area of desired frictional interface on a portion of a user's appendage (e.g., hand or fingers) includes a flexible layer of material having first and opposite sides, with the first side having a frictional engagement surface. The apparatus further includes a flexible backing sheet having first and second opposite faces. A pressure sensitive adhesive is disposed on the second face of the backing sheet. The backing sheet has a central section and opposed tab portions, with the second side of the layer of material affixed to the first face of the backing sheet, in at least a portion of the central section thereof. The tab portions are sufficiently long, in dimension extending away from the central section, so that when the second face of the backing sheet is adhered to a user's appendage, the tab portions extend at least half way around the appendage. The frictional engagement surface has a static coefficient of friction of at least 1.1. The apparatus has a load ratio between a shear force design load an an anticipated load of at least 1.3:1.

The invention discloses a hydraulic-driven multi-joint industrial robot. The hydraulic-driven multi-joint industrial robot comprises a connecting rod part I, a connecting rod part II, a connecting rod part III, a connecting rod part IV, a connecting rod part V and a connecting rod part IV as well as a hydraulic control part VII which are connected in sequence, wherein joints of the connecting rod parts are connected through rotary joints; each rotary joint is connected with a hydraulic oil cylinder, and a coder is mounted on each rotary joint; a double-finger grip is arranged on the connecting rod part VI, the fingers of the grip are connected with a linear hydraulic oil cylinder; an oil path of each hydraulic oil cylinder is communicated with the hydraulic control part VII, and an electro-hydraulic servo valve is arranged in the hydraulic control part. The robot adopts a fully serial structure form and has six rotary joints, the coder is mounted on each rotary joint, and the grip is mounted on the tail end, so that a load/dead load ratio is large. The hydraulic-driven multi-joint industrial robot is especially suitable for transporting, stacking or other large-load working stations or being mounted on a mobile carrier as a mobile operation mechanical arm.