19results about How to "Avoid system failure" patented technology

The invention discloses an anti-interference linear motor module motion control method, and relates to the technical field of linear motor module control. The method comprises the following steps: monitoring and analyzing multiple parameters of displacement error # imgabs0 #, acceleration fluctuation value # imgabs1 #, motor load capacity # imgabs2 #, motor working current I, motor real-time voltage value U, dragging force # imgabs3 # and guide rail friction force # imgabs4 # in the operation process of a motor module in real time, and interference of external environmental factors (such as airflow velocity # imgabs5 #, airflow pressure # imgabs6 #, deposition thickness # imgabs7 # and electrostatic effect coefficient # imgabs8 #); according to the method, the motion state of the motor module can be comprehensively evaluated, so that the deviation of the motion track is effectively reduced, and the motion stability of the motor module is remarkably improved. An interference model is established by collecting external environment interference parameters (airflow interference, deposition thickness, environment vibration and the like) and combining a neural network technology, a motion control strategy of a motor module can be dynamically adjusted, and different types of interference factors are compensated in real time.

The invention provides a method, device and equipment for determining an MMC overload boundary and a storage medium, and belongs to the technical field of direct current transmission, and the method comprises the steps: obtaining a power factor angle of a target MMC, and setting the amplitude of a zero-sequence signal and the constraint range of a phase angle; initializing two different working conditions of the target MMC, and determining maximum modulation signal margins of the two different working conditions under the condition of zero sequence signal injection; based on the maximum modulation signal margins under the two different conditions, determining the maximum operation power of the target MMC under the current power factor angle through a secant method; and adjusting the power factor angle to obtain the overload operation limit boundary of the target MMC. In this way, the overload operation boundary of the target MMC can be clearly obtained, the modulation signal margin of the MMC is obtained according to the zero sequence signal, then the maximum operation power and the initial operation power are determined, the overload operation boundary of the MMC can be accurately determined, the load level of the MMC can be reasonably set in the design and operation process, and safe and efficient operation is ensured.

The invention relates to the technical field of blade machining, and discloses a hard alloy blade numerical control machining device which comprises a mounting bottom plate and a mounting column, a collecting box is mounted in the middle of the top end of the mounting bottom plate, a first motor is mounted on the outer side of the collecting box, and the output end of the first motor is fixedly connected with a first transmission shaft; a grinding wheel is fixedly connected to the outer side of the first transmission shaft, one end of the first transmission shaft penetrates through the exterior of the collecting box and is fixedly connected with two sector gears, two fixing columns are fixedly connected to the outer side of the collecting box, and a rack plate is slidably connected to the tops of the fixing columns. Cooling liquid is automatically sprayed to the blade through rotation of the grinding wheel, power generated by rotation of the grinding wheel is ingeniously utilized, and synchronous and accurate automatic operation of the cooling liquid spraying process and the grinding process is achieved. The automatic spraying mode can ensure that the cooling liquid uniformly covers the surface of the blade, so that the cooling effect is more efficient and stable.

The guide sleeve comprises a sleeve body, the sleeve body is of a hollow structure with the two ends communicated with each other, the sleeve body comprises a shaft sleeve and an outer barrel which are coaxially arranged, the shaft sleeve is sleeved with the outer barrel, and a plurality of station holes penetrating through the inner wall and the outer wall of the shaft sleeve are formed in the circumferential face of the shaft sleeve; a station hole is formed in the outer cylinder, a solid lubricant is embedded in the station hole, so that friction resistance of the piston is achieved by making contact with the solid lubricant when the piston reciprocates, a limiting component used for limiting the shaft sleeve to be disengaged from a port is arranged at one end of the outer cylinder, and a locking unit used for fixing the shaft sleeve in an inner cavity of the outer cylinder is arranged at the other end of the outer cylinder. The friction force is reduced, and the operation stability of the piston is improved.

The embodiment of the utility model discloses a refrigerant heater. The refrigerant heater comprises a snakelike flat pipe, the snakelike flat pipe comprises a plurality of U-shaped bent parts and a plurality of flat pipe sections arranged in parallel in the first direction, and the flat pipe sections are connected through the U-shaped bent parts to form a continuous flow channel; at least two flat tube runners are arranged in the snakelike flat tube; the flat pipe flow channels are arranged in parallel in the second direction and are used for refrigerant circulation; wherein the first direction is perpendicular to the second direction; and the at least one heating sheet is arranged between the adjacent flat pipe sections. According to the embodiment of the utility model, the problem that the existing energy storage battery pack lacks a small refrigerant heater which is not in direct contact with a refrigerant is solved, and meanwhile, the problem of dry burning caused by non-uniform refrigerant distribution is avoided.

The invention relates to a mirror image layer cleaning method and device, computer equipment and a readable storage medium. The method comprises the steps that multiple to-be-cleaned mirror image layers on a target user side are obtained, and the to-be-cleaned mirror image layers are unused mirror image layers in all mirror image layers stored on the target user side; obtaining target associated information and target weight information of each to-be-cleaned mirror image layer from a pre-constructed target user-level mirror image layer information base; and cleaning the to-be-cleaned mirror image layer according to the target associated information and the target weight information. The cleaning effect of the method is good.

The invention relates to the technical field of valves, and discloses a quick connector with an overflow valve function, which comprises a connector used for connecting an air inlet end and an air outlet end and providing the overflow valve function; the butt joint assembly is arranged on one side of the connector, and sealing and quick detaching are achieved through multi-structure clamping; the control system is arranged in an inner cavity of the connector and used for being connected with the sensor to control the magnetic force of the electromagnet. The cut-off assembly is arranged on one side of the connector and controls the magnetic resistance between the electromagnet and the valve element by being powered on so as to control the medium flow; the cut-off assembly further comprises an assembly block. Through magnetic resistance adjustment between the electromagnet and the valve element, the flow of gas or liquid can be accurately controlled, dynamic adjustment of media in a system is achieved, the common lag and abrasion problems in traditional mechanical valve control are avoided, and adjustment is more flexible and efficient through accurate control of the electromagnet.

The invention discloses a sequence control state identification method and system for a flexible direct current valve control system, and relates to the technical field of flexible direct current transmission, and the method comprises the steps: obtaining a plurality of pole control instruction signals and a plurality of bridge arm voltage values of the flexible direct current valve control system in a preset detection period, carrying out the level dynamic identification analysis of each pole control instruction signal, and obtaining the sequence control state of the flexible direct current valve control system; the level states of various pole control instruction signals are obtained, an initial sequence control state corresponding to the flexible direct current valve control system is determined according to the level states of various pole control instruction signals based on a preset sequence control key value pair database, and state verification processing is performed on the initial sequence control state by adopting the voltage values of the bridge arms. And obtaining a sequence control state corresponding to the flexible direct-current valve control system. The technical problems that in the prior art, only four sequential control states of the sequential control process can be recognized, sequential control state recognition is not comprehensive, and the operation reliability of the flexible direct-current valve control system is reduced are solved.

For a circuit breaker system (3) including a first circuit breaker (1) and a second circuit breaker (2), the first circuit breaker (1) has a first trip unit, a first control unit and a first electrical sensor, the first control unit controls the first trip unit, the second circuit breaker (2) has a second trip unit, a second control unit and a second electrical sensor, the second control unit controls the second trip unit, the circuit breaker system (3) further includes means for communication between the first control unit and the second control unit, it is suggested that the first control unit monitors for the presence of an internal device fault in the second circuit breaker (2) via the means for communication, wherein the first control unit is adapted to change its standard trip characteristics to emergency trip characteristics when an internal device fault of the second circuit breaker (2) is detected.

The invention relates to the technical field of automobile air suspensions, in particular to an automatic calibration method and system for an air suspension system and a storage medium, and the method comprises the steps of automatically recognizing a calibration scene of the air suspension system, automatically configuring system basic parameters based on the calibration scene, and automatically adjusting the height of an air bag through a closed-loop control strategy. Real-time data of a height sensor and a pressure sensor are collected, calibration of the height sensor, the pressure sensor, the maximum axle load and CAN bus parameters is automatically completed according to a preset calibration rule, system faults are automatically cleared, various functions are verified, and calibration data are automatically stored to an ECU and a local storage medium; through full-process automatic calibration, the calibration efficiency and accuracy are improved, the labor cost is reduced, the technical problems that an existing calibration method depends on manual operation, the efficiency is low, errors are large, and the skill requirement for operators is high are solved, and the calibration requirements of air suspension systems of different types of vehicles can be met.

The invention discloses an open circuit prevention protection device and a live installation method, and the device comprises an open circuit prevention protection module which is used for detecting and rapidly responding to the abnormal overvoltage of the secondary side of a current transformer, and eliminating the high voltage; and the compatible aviation socket is used for being connected with a complete set of switches / terminals to realize plug and play of equipment. According to the invention, the technical problems that the power supply reliability is reduced and the operation is relatively tedious due to the fact that the automatic control equipment is overhauled and replaced in a power-off installation mode in the prior art are solved.

The utility model relates to microswitch technical field discloses a switch structure, include: base and conducting connection spare, conducting connection spare is located at base one side, and conducting connection spare can slide along the thickness direction of base, conducting connection spare includes the body, first conducting contact, second conducting contact and third conducting contact who set up in order along the thickness direction of base, first terminal, second terminal and third terminal, first terminal, second terminal and third terminal respectively penetrate base, and form first conducting branch, second conducting branch and third conducting branch respectively on base one side, conducting connection spare is configured as: when conducting connection spare slides along the thickness direction of base, first conducting contact always abuts on first conducting branch, second conducting contact abuts on second conducting branch and / or third conducting contact abuts on third conducting branch, the utility model uses signal transmission whole process no open gap.

The utility model belongs to large -scale vehicle electronic parking technical field, concretely is a simple electronic parking control system, include: self -reset manual switch can twist left and right, fuse, series connection between power supply and self -reset manual switch, first relay and second relay respectively correspond to the left end and right end output of self -reset manual switch of self -reset manual switch, caliper motor, both ends are connected to the normally open contact of first relay and second relay respectively, the left side output of self -reset manual switch is connected to the anode of power supply through the coil of first relay, and the right -end output is connected to the anode of power supply through the coil of second relay, the utility model discloses through abandoning controller, only using the pure hardware architecture of basic relay and switch, the manufacturing cost is reduced greatly, makes this technology can be widely used in low -end commercial and engineering vehicle, the reliability is high, no software is participated, and the logic is directly realized by hardware circuit, and the anti -interference ability is strong, and the work is stable.

The present application provides an electric power information management platform based on data fusion, which relates to the field of electric power information technology, including: an equipment distribution array acquisition module acquires the equipment distribution array of the target power station; a communication fitness analysis module performs communication fitness analysis on the electric power equipment; an interactive fitness analysis module performs interactive fitness analysis on the electric power equipment; a correlation identification module performs correlation identification on the combination of electric power equipment; an interactive node coefficient identification module performs interactive node coefficient identification on the electric power equipment; an interactive neighborhood construction module constructs an interactive neighborhood and configures a neighborhood processing component; a monitoring and early warning module performs asynchronous monitoring data extraction and electric power information analysis on the electric power equipment set, and performs electric power information early warning. The present application solves the technical problem that the prior art cannot fully tap the interdependence between electric power equipment, resulting in untimely and inaccurate monitoring of equipment failures, and improves the efficiency and accuracy of electric power information management.

The utility model discloses a kind of gas steam combined cycle units, comprising: first unit and second unit, respectively equipped with gas turbine system, form first gas turbine and second gas turbine;First gas turbine water supply pipeline, through first gas turbine shut first valve body and second valve body;Second gas turbine water supply pipeline, through second gas turbine shut third valve body and fourth valve body;First gas turbine water supply flow regulating valve, set on first gas turbine water supply pipeline;Second gas turbine water supply flow regulating valve, set on second gas turbine water supply pipeline, including second condenser side regulating valve and second waste heat boiler side regulating valve, the technical scheme of this gas steam combined cycle unit can improve FGH system start-up problem, optimize the FGH water supply system design of two sets of units, to ensure that under different operating conditions, FGH system can be normally put into operation, improve the efficiency of gas turbine and stabilize unit load.

The utility model provides an electronic throttle valve convenient to overhaul, which relates to the technical field of throttle valves, and comprises a casing, a transmission pipe, a valve rod, a valve rod, a valve rod and a valve rod, and the transmission pipe is fixed on one side of the upper part of the casing; the throttle valve assembly is arranged in the machine shell and the transmission pipe; the motor is fixedly installed on the lower portion of the machine shell and controls the throttle valve assembly to be matched with the conveying pipe to conduct airflow control action. The socket comprises a seat body fixed on one side of the machine shell, and an inserting gap used for inserting a control power line is formed in the seat body electrically connected with the motor; a limiting block is slidably installed on the upper portion of the base through a spring. By means of the technical scheme, automatic plugging and forced limiting locking of the power plug are achieved through a spring limiting block and lead screw sliding block combined structure, meanwhile, the valve disc is driven by a motor multi-stage transmission mechanism to adjust the air inflow, the valve disc and the inserting rod are in sliding connection and fixed through threads, rapid dismounting, mounting and overhauling are facilitated, and the working efficiency is improved. And the use and maintenance reliability is effectively improved.

The present invention provides a method, device, equipment and storage medium for determining the overload boundary of an MMC, and belongs to the field of direct current transmission technology. The method includes: obtaining the power factor angle of a target MMC, and setting the constraint range of the zero-sequence signal amplitude and phase angle; initializing two different working conditions of the target MMC, and determining the maximum modulation signal margin of the two different working conditions under the condition of injecting a zero-sequence signal; based on the maximum modulation signal margin under the two different conditions, determining the maximum operating power of the target MMC under the current power factor angle by the chord intercept method; adjusting the power factor angle, and obtaining the overload operation limit boundary of the target MMC. In this way, the overload operation boundary of the target MMC can be clearly obtained, the modulation signal margin of the MMC can be obtained according to the zero-sequence signal, and then the maximum operating power and the starting operating power can be determined, and the overload operation boundary of the MMC can be accurately determined, which helps to reasonably set the load level of the MMC during the design and operation process to ensure safe and efficient operation.

The utility model discloses a refrigeration energy -conserving device, include: support frame body, including the upper layer frame and lower layer frame who sets up in order along the first direction, the upper layer frame with the lower layer frame all along second direction extension, the inside of lower layer frame is equipped with water tank. The inside of upper layer frame is equipped with condenser for cooling cooling liquid. Heat exchange device, including plate heat exchanger and drive assembly. The plate heat exchanger is located along the two sides of condenser in third direction, and the plate heat exchanger includes liquid channel and heat exchange channel, and the liquid channel is communicated with water tank pipeline setting, and the heat exchange channel is communicated with condenser pipeline setting. Drive assembly is located along one side of water tank in second direction for driving cooling liquid cooled through condenser and water in water tank flows through plate heat exchanger in proper order and carries out heat exchange to reduce the cooling demand of cooling liquid, and the energy consumption of refrigeration system is reduced.

A low-voltage circuit measurement and control terminal protection device provided by the present invention relates to the field of power system protection, and includes: a protection shell, which is hollow inside and has a predetermined accommodating space, and the inner walls on both sides are sequentially provided with a plurality of connecting blocks and overlapping blocks along the axial direction, and the opposite sides of the overlapping blocks are provided with support plates, and the top of the support plate is provided with a low-voltage circuit measurement and control terminal; a ventilation structure, which is arranged on both sides of the protection shell, and a plurality of filter screens are arranged inside; a dust removal structure, which is arranged on the top of the ventilation structure and is connected to the inside of the ventilation structure; a spray structure, which is arranged on the top of the inner wall of the protection shell; a storage structure, which is arranged at the top of the protection shell and is connected to the spray structure, and is used to store fire extinguishing materials; a dirt collecting box, which is slidably connected to the slide, and a handle is provided on one side; the present invention has the technical effects of real-time monitoring and protection, significant heat dissipation efficiency and high safety.