35results about How to "Improve inaccuracy" patented technology

A method transmits and receives signals in a cooperative, multi-user, multi-input, multi-output network. The network includes base stations (BSs) and mobile stations (MSs). Each BS has at least two antennas, and each MS has at least one antenna. At a first base station and a second base station using linear pre-coding matrices, a plurality of data streams are jointly pre-coded to produce first signals and second signals. The first signals are transmitted synchronously from the first BS and the second BS to a first MS, and the second signals are transmitted synchronously from the first BS and the second BS to a second MS, and in the first signal and the second signal are asynchronous with respect each other.

First terminals and second terminals, which are terminals of adjacent terminal wires, are staggered in the direction in which wires run, and transparent conductive films provided to the first terminals and second terminals extend so as to overlap the terminal wires outside the regions in which contact holes are created and are formed so as to have a width narrower than the width of the terminal wires in the regions where contact holes are created.

An electric curtain mainly utilizes a covering sheet furled at an upper limit position, which simultaneously impels an actuating member of a zero device to relatively cooperate with a sensor of the zero device, so that the covering sheet would not continue operating and a counter in the zero device would recount once a processing unit of a controlling device receives a signal from the sensor. Thus, the processing unit would drive the counter to recount in every following drop of the covering sheet to accurately control the suspending position without incurring an accumulative counting error and increase an operative convenience.

The invention relates to a remote-control system and control method for a 4D cinema. The control terminal of the remote-control system transmits a directive command aiming at terminal equipment to a central control main machine; the central control main machine analyzes the directive command and transmits one or more control commands which correspond to the directive command to terminal equipment appointed by the directive command; and the terminal equipment which receives one or more control commands executes the control commands and feeds back the executive information of one or more control commands to the central control main machine. The remote-control system disclosed by the invention has the beneficial effects that the inaccuracy of open-loop control is improved because the terminal equipment executes accurate information feedback on the control commands every time, thereby achieving the WYSIWYG (What You See Is What You Get) effect; and the using conditions of the terminal equipment and the parts thereof are fed back through feedback information, the statistic operation time and the status information in the executing process are transmitted to the central control main machine, and the replacement time of the terminal equipment or the parts thereof is defined one by one, so that the fault hidden trouble is previously eliminated and the operating cost is lowered.

The invention relates to a field determination method for necessary quantity of residential building natural ventilation. The determination process is as follows: a certain window area at the lower part of the residential building is opened, which leads outdoor air to naturally enter the rooms; and the outdoor air entering the rooms rises owning to indoor heat source dissipation and temperature-rising of air due to heat-adsorption; one window is set and a certain area of the window is opened as an air outlet, an air-quantity-measuring simple cover is arranged at the air outlet position, then, the air quantity passing through an air measuring duct is measured by utilizing an air quantity tester, and the measured value is the necessary quantity of residential building natural ventilation. The method is simple, the field measuring precision is improved, the inaccuracy owning to instability, low quantity and random is improved for the measuring result of the natural ventilation. The air-quantity-measuring simple cover is convenient for manufacturing and installing, the measuring cost is low, and the method is suitable for field test of the necessary quantity of residential building natural ventilation.

The invention provides a light dynamic regulation and control method based on an adaptive fuzzy decision tree. The method comprises the following steps of step1, parameter data collection: according to factors affecting the illumination of a street lamp, determine a traffic flow, an environment illumination, PM2.5 and points in time as parameters affecting the illumination of the street lamp, anddividing the parameters into several parameter grades; step2, parameter data membership calculation: introducing the values of the traffic flow, the environment illumination, the PM2.5 and the pointsin time into a membership function and calculating the membership data of the above parameters; step3, fuzzy decision tree model establishment: establishing fuzzy decision tree models between the traffic flow, the environment illumination, the PM2.5 and the points in time and the illumination of the street lamp; and step4, introducing the membership data of the current parameters into the fuzzy decision tree models established in the step3 so as to obtain street lamp illumination grade information satisfying a current illumination requirement.

An electromagnetic coaxial driving injection apparatus, having a linear motor for driving injection and a rotation motor for metering. The linear motor and the rotation motor of both the injection and metering motors and an injection screw are set on a common axis. A connecting device connects moving parts of the motors with the injection screw. Stationary parts of the motors are fastened on a frame and forward-backward moving unit, not moving during injection and metering. Due to the arrangement of the moving parts and the injection screw on a single axis, moving parts are lessened, and transmission losses are minimized. Since the number of structural parts is low, only the moving parts of the motors move during injection while the stationary parts thereof remain at rest, thus greatly reducing inertia. Furthermore, since the moving axis of the injection screw and the injection screw are linked, without being connected with stators or other structural parts, injection is performed with minimal friction, enhancing effectiveness of the apparatus.

The main characteristic of the present invention is that, due to direct driving of injection without mechanical transmission, the effects of hysteresis and backlash are avoided. Furthermore, inertia and friction are reduced. The present invention increases the response and reappearance of the system.

The application discloses an intelligent vehicle control method and device, and a storage medium, and belongs to the technical field of the intelligent vehicle. The method comprises the following steps: acquiring an initial driving part of an intelligent vehicle; receiving traffic road status information sent by roadside equipment in the process that the intelligent vehicle drives according to the initial driving path; and controlling the intelligent vehicle based on the traffic road status information. In the method disclosed by the application, the traffic road status information sent by the roadside equipment can be acquired in the process of driving according to the acquired initial driving path, the intelligent vehicle can be controlled according to the traffic road status information; since the intelligent vehicle can be controlled by combining the traffic road status information sent by the roadside equipment in the driving process, the control inaccuracy on the intelligent vehicle due to inaccurate driving path is improved, and then the accuracy of controlling the intelligent vehicle is improved.

The invention relates to a gas chromatographic and mass spectrometric coupling interface and a gas chromatographic and mass spectrometric coupling system as well as a flow rate matching method. The coupling interface comprises a sheath flow device, wherein the sheath flow device is provided with a chromatographic connector, a mass spectrometric connector and a carrier gas interface, of which the interiors can be communicated with each other; the chromatographic connector and the carrier gas interface are used for introducing a gas; the mass spectrometric connector is used for outputting the gas. According to the technical scheme of the invention, an interference removal gas is introduced as a carrier gas by utilizing the sheath flow device, so as to balance a difference value between a flow rate at a mass spectrometric sample inlet and a flow rate at an outlet of a chromatographic column; the problem that the flow rates of a mass spectrometric analyzer and a chromatographic separator are not matched is solved; the effect that a spectrogram which is obtained by analysis is caused to be inaccurate as the mass spectrometric analysis is limited by the gas flow rate of chromatographic analysis is improved.

The invention discloses an AUV recovery docking dynamic positioning control method based on model predictive control. For dynamic positioning control in an AUV recovery docking process, state estimation is completed through an adaptive unscented Kalman filter algorithm, a state estimation result is compared with an expected state to complete feedback, linear processing is carried out on a linear part in a complex nonlinear system of the AUV, meanwhile, the approximation capacity of an RBF neural network to a nonlinear function is utilized, a compensation amount is generated through an RBF neural network compensator with a self-adjusting function according to the nonlinear part of the AUV, and closed-loop control over a dynamic positioning system is achieved through a model predictive controller. According to the method, a neural network and model predictive control are combined to solve the influence caused by an inaccurate model in the AUV dynamic positioning process, and the dynamicpositioning control precision and stability are improved.

The present invention provides a weight-prediction method comprising the following steps: providing the first-period data and the second-period data of basic users and proving users, respectively; using an Artificial Neural Network method to analyze the first-period data and second-period data of basic users to calculate a basic parameter; analyzing the first period data of proving users by using a Fuzzy Inference system based on the basic parameter and then calculate a predictive data; comparing the predictive data with the second-period data of proving users and determining if the predictive data is in an acceptable range. If the predictive data is certainty in the acceptable range, the basic parameter is defined as a predictive parameter.

A microscope is disclosed in which a specimen is arranged between two objectives and can be observed with reflected light as well as with transmitted light. In a microscope with field transmission, two objectives have substantially identical optical characteristics and at least one of the two objectives is followed by a mirror which reflects the light transmitted through the specimen back into itself exactly. In this way, there is twofold transmission through the specimen with optimum illumination of the solid angle. In a laser scanning microscope, there are likewise two objectives with substantially identical optical characteristics and at least one of the objectives is followed by a phase-conjugating or adaptive mirror.

The embodiment of the invention provides a method and device for obtaining information from court documents. The information obtaining method comprises the steps of extracting trial and ascertainmenttext blocks from the court documents according to a first rule; extracting at least one case fact text block from the trial ascertainment text block according to a second rule; and extracting fact elements of the at least one case fact text block. According to the technical scheme provided by the embodiment of the invention, the fact element information of the legal case can be extracted from thecourt document, and structural management and query of the court document are facilitated.

The invention discloses a calculation method for back-to-back tapered roller bearing configurations. According to the calculation method, the width of a bearing outer ring distance ring of a bearing seat (5) is fixed, pre-tightening of a bearing is determined according to the width of an inner distance ring (4). A metering tool and a subtraction calculation method are adopted, so that the inaccuracy problem of a plurality of measuring points of a plurality of measuring units is improved; the influence of the interference amount of a shaft sleeve and the bearing and the interference amount of the shaft sleeve and a shaft on bearing pre-tightening is calculated, so that the problem of accurate calculating of back-to-back tapered roller bearing configuration pre-tightening is solved; and the adopted calculation method is simple, scientific and effective, and batch production of the back-to-back tapered roller bearing configurations is achieved.

The invention provides a life characteristic detection and identification method for a rescue robot. The life characteristic detection and identification method is used for solving the technical problem of rescue failure caused by complex environment of an existing rescue robot. The life characteristic detection and identification method comprises the following steps that 1, an O-shaped detectionarea is constructed with the position of the rescue robot as a starting point, and an obstacle avoidance system of the rescue robot is started; 2, rescue scanning is performed on the O-shaped detection area by using a carbon dioxide detector to obtain a target point set; 3, target detection is carried out on the target point set by utilizing an infrared detector, and a target point to be rescued is determined; and 4, third-stage identification is performed on the to-be-rescued target point by utilizing a radar life detector, the specific position of a rescuer is determined, and a distress signal is sent by a controller of the rescue robot to timely notify rescue workers to rescue. According to the life characteristic detection and identification method, the multiple detectors are combined,so that the recognition precision is improved, the rescue time is shortened, and the rescue robot has the capability of efficiently and accurately detecting the vital signs of a human body.

The invention provides a monitoring system and a monitoring method of a reciprocating compressor. The monitoring system of the reciprocating compressor comprises a sensor and an analysis controller, and the sensor captures an action signal when the reciprocating compressor runs; the analysis controller receives the action signal, converts the action signal into an angle signal, and matches the action signal with the angle signal to form state information; and the analysis controller compares the state information with template information through an operation program and judges whether the state information conforms to the template information or not so as to obtain the machine condition of the reciprocating compressor. Therefore, detection can be carried out without process information, and the machine condition of the reciprocating compressor can be accurately mastered.

The invention relates to the field of virtual space technology, in particular to a space color cognitive memory ability evaluation method and device, electronic equipment and a medium. The method comprises the following steps: establishing a three-dimensional pre-measurement scene; establishing a plurality of trials based on the three-dimensional pre-measurement scene; determining a pre-test evaluation result corresponding to multiple rounds of test times; wherein multiple rounds of test times are established based on a three-dimensional pre-measurement scene, and each round of test times corresponds to a configuration parameter; obtaining an initial value; establishing a current test number; determining parameters of a next test time; a step of establishing a next test; and circularly executing the steps of taking the next test time as the current test time, determining the parameters of the next test time and establishing the next test time until the number of tests corresponding to the current test time is equal to the target number of tests. The method and the device have the effect of improving the accuracy of capability evaluation of the operation/execution personnel.