18results about How to "Flexible and convenient control" patented technology

The invention discloses a grid-connected pre-synchronization method of a virtual synchronous generator parallel system and electronic equipment. The grid-connected pre-synchronization method of the virtual synchronous generator parallel system comprises the following steps: n virtual synchronous generators start to execute grid-connected pre-synchronization after receiving a pre-synchronization instruction, wherein the grid-connected pre-synchronization comprises frequency and phase pre-synchronization and amplitude pre-synchronization; the frequency and phase pre-synchronization comprises the steps of calculating frequency and phase pre-synchronization control quantity, calculating damping power according to the frequency and phase pre-synchronization control quantity, and calculating an output angular frequency difference of the virtual synchronous generator according to mechanical power, electromagnetic power and damping power; and determining the power angle of the virtual synchronous generator according to the output angular frequency difference of the virtual synchronous generator and the rated angular frequency. According to the invention, communication-free pre-synchronization can be realized, communication can also be realized through a communication method, the control is flexible and simple, and the requirement on communication reliability is not high.

The utility model provides an intelligent closestool electronic water pump brushless motor control system, which comprises a wireless module, a control module, a driving module and a power supply module, and is characterized in that the wireless module is used for being wirelessly connected with burning equipment or debugging equipment so as to receive wireless data signals transmitted by the burning equipment or the debugging equipment; the wireless module is connected with the control module, the wireless module transmits a wireless data signal to the control module, and the control module is used for automatically updating after receiving the wireless data signal; the driving module is connected with the control module, and the control module controls the driving module to drive the brushless motor to work; the input end of the power supply module is connected with an external power supply, and the output end of the power supply module is connected with and supplies power to the wireless module, the control module and the driving module. Software burning is carried out on the motor control panel through the wireless technology, and even after glue pouring, software burning can be carried out on the motor control panel through the wireless technology.

The invention discloses an energy storage grid-connected and off-grid switching system and a control method thereof. The invention belongs to an energy storage system control system and method, and provides an energy storage grid-connected and off-grid switching system and a control method thereof for solving the problem that when a power grid in an energy storage system breaks down and is recovered, an existing grid-connected and off-grid switching method is likely to fail in switching. According to the first type, one battery pack, one power conversion system and one static change-over switch are sequentially connected to form an energy storage cabinet, and all the energy storage cabinets are connected in parallel and then connected to a power grid and a local load. According to the other mode, a plurality of static change-over switches are connected in parallel to form a static change-over switch cabinet, a plurality of power conversion systems are connected in parallel to form a power conversion system cabinet, and the static change-over switch cabinet is connected with the power conversion system cabinet and then is connected with a power grid and a load, so that flexible wiring can be realized, and a modularized structure is arranged, so that adjustment and capacity expansion can be conveniently carried out at any time; and the stability of grid-connected and off-grid switching can also be considered.

A pressure regulating valve (11) includes a valve main body (12) having a valve chamber (13) which communicates with a refrigerant inflow passage (14) and a refrigerant outflow passage (15), a valve body (17) which changes a flow rate of a refrigerant by advancing and retreating with respect to a valve seat (16) formed in the valve chamber (13) between a valve-closed state of being seated on the valve seat (16) and a valve-opened state of being spaced apart from the valve seat (16), a pressure sensitive member (21) which biases the valve body (17) toward the valve seat (16) and which allows an advancing and retreating movement of the valve body (17) by expanding and contracting according to a pressure which the valve body (17) is applied from the refrigerant flowing into from the inflow passage (14), and an adjustment means (24) which adjusts a biasing force applied to the valve body (17) of the pressure sensitive member (21), and an actuator (a stepping motor) (40) driving the adjustment means (24) is provided. The adjustment means (24) is preferably provided with a stopper member (29) which stops the movement of the adjustment member by the actuator (40) and can be set as a starting point when setting the biasing force.

The present invention discloses a coordinated dispatch optimization control system for a group of hydropower stations, which relates to the technical field of power station control. A state division module obtains multi-source data of each hydropower station, and after comprehensively evaluating the current health state of each hydropower station based on the multi-source data, divides the health state of the hydropower station into an excellent state, a medium state, and a poor state. The optimization control module generates a first control strategy in combination with the hydropower stations in the excellent state and the medium state during the dry season, and generates a second control strategy in combination with the hydropower stations in the excellent state, the medium state, and the poor state during the flood season. The group of hydropower stations is coordinated and dispatched and optimized according to the generated first control strategy or the second control strategy. The control system generates different control strategies in the dry season and the flood season, respectively, and realizes flexible resource dispatch and optimization control by comprehensively considering the health state of the power station, thereby improving the power generation efficiency and grid stability of the hydropower station group.

The invention relates to fluorinated nanoparticles and a preparation method of waterproof synthetic leather loaded by the fluorinated nanoparticles. According to the preparation method, tetraethyl orthosilicate and aminopropyltriethoxysilane are taken as raw materials, a SiO2 nano-particle precursor is prepared by using a # imgabs0 # method, chemical modification is performed by using fluorine-free silane, the fluorinated nano-particles are prepared, and the preparation method is relatively mild, simple and feasible. In the process of loading the nanoparticles with different fluorine contents on the microfiber leather, the reaction operation is simple and convenient, and the yield is high. In the whole reaction process, the solvent is recycled, the reaction yield is improved, and environmental pollution is reduced. The fluorinated nano-particles prepared by the method are loaded on the microfiber leather through in-situ growth on the fiber surface, the fluorinated nano-particles are uniformly distributed on the fiber surface, the surface hydrophobic angle can reach 150 degrees or above, the hydrophobic effect of microfibers is improved, and the method has very important significance on development of new synthetic leather materials.

The application discloses a kind of micro-nano hard ceramic phase composite reinforced laser cladding nickel-based wear-resistant coating and its preparation method and application.The preparation method uses discharge plasma ball milling process to mix micro-nano hard ceramic and Ni-based metal powder for modification treatment, utilizes the synergistic effect of plasma activation and mechanical ball milling force of pulse discharge, effectively breaks the nano ceramic phase agglomerate, realizes the uniform dispersion distribution of nano ceramic phase in composite powder;By adopting the optimization of laser cladding process parameters, and cooperating with ultrasonic vibration auxiliary and / or pulse laser composite energy input, etc. Regulating means, prepare the nickel-based wear-resistant coating with uniform and dense structure, high hardness, excellent wear resistance and good metallurgical bonding with base material, which can meet the service requirements of mining machinery, oil drilling and production, metallurgical roller and other harsh working conditions, and has wide application prospect.

The present invention is an offshore power generation device that integrates automatic light-seeking solar energy, wind energy, and tidal energy. The device includes an automatic light-seeking solar power generation module, a vertical wind power generation module, a vertical tidal power generation module, as well as a battery, an inverter, a control module, a control console, and a wireless communication module; the device is controlled by an automatic light-seeking solar power generation module controlled by a telescopic rod that can rotate at four connection points, a vertical wind power generation module whose fan blades can self-adjust the angle between the fan blades and the supporting poles according to the direction of the wind, and a vertical tidal power generation module using double spiral blades. The present invention improves the power generation efficiency of traditional solar power generation, wind power generation, and tidal power generation, and greatly improves the stability of the power generation of the device through resource complementarity between the three major energy sources of solar energy, wind energy, and tidal energy.

The present invention relates to an automatic switching circuit between an external power supply and battery power supply of a portable device, which comprises a first switch component, a second switch component, a third switch component, a charging management module and a power management module; one end of the first switch component is connected to the input end of the external power supply, and the other end is connected to the device load; one end of the second switch component and the third switch component are both connected to the power management module, and the power management module is connected to a rechargeable battery; the other end of the second switch component is connected to the device load, and the other end of the third switch component is connected to the charging management module, and the input end of the charging management module is connected to the external power supply. The present invention uses an ideal diode switch circuit designed with a PMOS tube to replace the power supply combining diode and the anti-reverse diode of the charging management circuit, which solves the voltage drop problem caused by the diode, improves the use efficiency of the rechargeable battery, and increases the service life of the battery.

This invention relates to a six-degree-of-freedom (6DOF) measurement system and method. The 6DOF measurement system includes a camera, a prism, and a target; the optical axis of the prism is coaxial with the line of sight of the camera; the target is mounted on the target and positioned within the combined field of view of the camera and prism; the target includes a mounting base and a main shaft mounted on the mounting base, with a fixing plate on the main shaft; an annular sleeve is fixedly connected to the fixing plate, and a motor is mounted outside the annular sleeve; the main shaft of the motor passes through the annular sleeve and is connected to a transmission component, which has rollers connected to a slider. Driven by the motor, the slider can slide radially from the center to the edge of the annular sleeve via the rollers; a main marker is mounted on the top of the main shaft, and an auxiliary marker is mounted on the top of the slider. Compared with the prior art, this invention can achieve six-degree-of-freedom pose measurement of a target under uncalibrated conditions, improving the adaptability of the measurement system.

The utility model discloses a tubular accurately controllable silent light type hydro-optical instrument which comprises a main machine, a hydro-optical needle and an injector, the injector is installed in the main machine, the hydro-optical needle is communicated with the injector through an infusion tube, a handle is installed at the end, close to the hydro-optical needle, of the infusion tube, and an electric control assembly and a boosting assembly are arranged in the main machine. The boosting assembly is connected with a piston rod of the injector and electrically connected with the electric control assembly. According to the water-light instrument, direct-current motor drive of an original handheld part is removed and integrated into the main machine, the weight of the handle is reduced, the size of the handle is reduced, noise is not generated when the handle works, the handle works in a mute state, a closed-loop stepping motor is selected as the motor, starting and stopping control is accurate, and therefore the dosage of each time can also be accurately controlled.

The utility model discloses a high-temperature environment-friendly under-pressure operation combined system which comprises a high-temperature under-pressure operation system, the high-temperature under-pressure operation system comprises a fixing frame, and a safety three-ram blowout preventer is arranged at the bottom end of the fixing frame. A lower semi-closed blowout preventer, a lower annular blowout preventer, a middle semi-closed blowout preventer, an upper semi-closed blowout preventer and an upper annular blowout preventer are fixedly arranged above the safety three-ram blowout preventer, and a fixing slip is arranged between the middle semi-closed blowout preventer and the upper semi-closed blowout preventer. The utility model has the advantages of high-temperature operation under pressure, high-temperature resistance, high-pressure bearing and high-temperature sealing safety; a full-hydraulic control function is achieved, control is flexible and convenient, and performance is stable and reliable; the sewage treatment and separation function is achieved, oil-water separation reaches the standard, safety and environmental protection are achieved, and energy conservation and efficiency improvement are The circulating cooling function is achieved, heat and cold are independently replaced, and the circulating cooling effect is good; the pressure distribution control function is achieved, pressure is balanced and stable, and working efficiency is improved.

The invention discloses a cooperative scheduling optimization control system for a hydroelectric power station group, and relates to the technical field of power station control. A state division module obtains multi-source data of each hydroelectric power station, and comprehensively evaluates the current health state of each hydroelectric power station based on the multi-source data; the health state of the hydroelectric power station is divided into an optimal state, a medium state and a poor state, and the optimization control module generates a first control strategy in combination with the hydroelectric power station in the optimal state and the medium state in a dry season and generates a second control strategy in combination with the hydroelectric power station in the optimal state, the medium state and the poor state in a wet season; and performing cooperative scheduling optimization control on the hydroelectric power station group according to the generated first control strategy or the second control strategy. The control system generates different control strategies in the dry season and the wet season, flexible resource scheduling and optimal control are achieved by comprehensively considering the health state of the power station, and the power generation efficiency of the hydroelectric power station group and the power grid stability are improved.

The invention discloses an endoscope scalpel capable of adjusting the length and angle of a scalpel head and a use method of the endoscope scalpel. The scalpel comprises a main shell, a scalpel head located at the front end of the main shell, an extension degree adjusting unit arranged in the main shell and used for controlling and adjusting the extension length of the scalpel head, a scalpel angle adjusting unit arranged in the main shell and used for controlling and adjusting the rotation angle of the scalpel head, and a handle arranged at the tail of the main shell. According to the scalpel, the scalpel head extending amount control assembly and the scalpel head rotating amount control assembly are integrated, control of the scalpel head extending amount control assembly and control of the scalpel head rotating amount control assembly are mutually independent and not mutually restricted, and therefore the operation flexibility of the scalpel is greatly improved, the extending length of the scalpel head can be adjusted according to the requirements of different tissue cutting depths, and the situation that cutting is too deep or too shallow can be effectively avoided; in addition, the bending angle of the tool bit can be adjusted according to needs so as to meet the cutting requirements of different parts; in addition, the electrode is added and converted into a monopole electrotome for use, so that more endoscopic surgery cutting requirements are met, and the functional diversity of the scalpel is improved.

The invention discloses a simulation model packaging method and system which are applied to the field of system simulation, and the method comprises the steps that internal variables are introduced into a pre-established simulation model, and the internal variables comprise simulation time, error information and special internal variables; compiling the simulation model, generating a component, and verifying the component; establishing a simulation environment based on the component, writing EL language codes in the simulation environment, and controlling the running state of the simulation model; and generating a deck platform through the simulation environment and the EL language code, and packaging the simulation model into an fmu file based on the deck platform.

The present application relates to a kind of vehicle control method, device, vehicle and storage medium, comprising, when vehicle is in parking state, obtain user driving habit information and the video frame sequence containing face, face object detection tracking and non-face object detection are carried out to video frame sequence, obtain the face feature information and trajectory distance information of face object, the non-face feature information of non-face object;In trajectory distance information is in the preset approach distance range, and there is at least one face feature information and target face feature information matching condition, based on face feature information, user driving habit information and non-face feature information corresponding control instruction is generated to realize the automatic opening control of car door and / or trunk.No need in the case where user carries vehicle digital key, and need user manual opening control operation to the car door, trunk of vehicle, the present application can realize the automatic opening control of vehicle, greatly improve the user driving experience.

The invention relates to a broadband target radar echo simulation device and method based on a single array element antenna. The simulation device comprises a lifting platform; the transmitting and receiving antenna unit is used for receiving radar radiation signals and transmitting simulated target echo signals, and the transmitting and receiving antenna unit is arranged at the top end of the lifting platform and moves continuously along with the lifting platform so as to simulate the pitch angle of the spatial position of the ballistic target relative to the radar; and the echo simulation module is used for performing down-conversion processing on the radar radiation signal received by the transceiving antenna unit, extracting a baseband signal, modulating the baseband signal, performing up-conversion processing, obtaining the simulation target echo signal, and sending the simulation target echo signal to the transceiving antenna unit. According to the invention, radar radiation signals can be detected and forwarded in an ultra-large frequency range, radar echo signals of multiple frequency bands can be simulated, and the radar frequency agility working mode can be adapted.

This utility model relates to the field of electronic control device technology, specifically to a one-to-two electric linear actuator controller. The controller includes a housing, a control board housed within the housing, and a wiring harness electrically connected to the control board. The housing is equipped with a control panel, which has a first button and a second button. The control board is equipped with a first switch that contacts the first button and a second switch that contacts the second button. The purpose of this utility model is to provide a one-to-two electric linear actuator controller with significant advantages in terms of ease of operation, functional expandability, and user experience, effectively addressing the shortcomings of existing technologies.