37results about How to "Reduce the risk of loss of control" patented technology

The invention discloses a space debris rope system dragging despinning and removal method, relates to space debris despinning and removal methods and belongs to the technical field of spaceflight. By the adoption of the method, a trailer spacecraft is launched into an orbit, so that the rendezvous with debris is finished; a trailer is connected with the debris through multiple tying ropes; a dynamical model is established, a control law is designed to adjust the nominal rope length of each tying rope to change the tension of the tying ropes, despinning of the debris is achieved through the cooperation of the multiple tying ropes, the situation that the tying ropes are cut and broken through protruding components on the debris is avoided, and the stability and the redundancy of a rope system trailer system are improved; and a trailer engine is used for ignition, reverse dragging force is applied, the space debris is pulled into the atmosphere to be burnt, and therefore debris removal is achieved. By the adoption of the method, despinning of the space debris can be achieved, the situation that the tying ropes are cut and broken through the protruding components on the debris is avoided, and the stability of the system is improved; and in addition, the redundancy of the tying ropes is improved by increasing the number of the tying ropes. The method can be used for space debris despinning and removal and can also be used for despinning of and control over other non-cooperative targets.

The invention relates to a tropsch synthesis method of a fixed bed, which is one-section tropsch synthesis, and comprises the steps of: leading fresh raw material gas H2 and CO to enter a tropsch synthesis reactor of the fixed bed, carrying out tropsch synthesis reaction under the action of tropsch synthesis catalyst, separating the reaction effluent, and obtaining gas hydrocarbon product, liquidhydrocarbon product and water, wherein the liquid hydrocarbon product is separated into light fraction oil, intermediate fraction oil and heavy fraction oil; and returning part of the gas hydrocarbonproduct and the liquid hydrocarbon product back to an inlet of the tropsch synthesis reactor. The invention solves the problems of difficult temperature control of a bed layer of the tropsch synthesis catalyst of the fixed bed, overhigh temperature of the bed layer and poor product selectivity. The invention improves the distribution of the synthetic oil product, and effectively reduces the olefin content of the light synthetic oil product.

The invention relates to an engineering changing cost dynamic monitoring system and a method thereof. The dynamic monitoring system and a method comprise the following steps: changing cost information data are sent to a server by a declaration terminal through computer network. The changing cost information data are downloaded by an audit terminal. The audit information data after being audited are uploaded to the server. A monitoring terminal downloads the audit information data from the server to generate a statistical report. All signing data of the changing cost and audit process data are stored in the data storing device of the server, the changing cost statistical report can be examined at any time through the monitoring terminal to actively master the fee condition of changing signing and realize the dynamic monitoring the engineering cost changing.

The present application discloses a permanent magnet synchronous motor (PMSM) flux weakening control method and a controller. The method comprises selecting a direct-axis current initial value and a quadrature-axis current initial value which are approximate values of the direct-axis current and the quadrature-axis current actually required by the motor; then, enabling the PMSM to operate at the direct-axis current initial value and the quadrature-axis current initial value; finally, adjusting the direct-axis current and the quadrature-axis current of the PMSM in order that the PMSM operates from the direct-axis current initial value to a direct-axis current target value, and from the quadrature-axis current initial value to a quadrature-axis current target value, wherein the direct-axis current target value is the direct-axis current actually required by the motor, and the quadrature-axis current target value is the quadrature-axis current actually required by the motor. It can be seen that the current response speed can be greatly increased by quickly locking an approximate value of the actually required current, operating the PMSM at the approximate value and adjusting the current of the PMSM on this basis.

The invention discloses a life cycle management method of a container group based on a Kubernetes system architecture, comprising the following steps: 1, a user submits a task to a Kubernetes system for application processing; 2, the user submits the task to the Kubernetes system for application processing. 2, that Kubernetes system judges whether there is a pod correspond to the current task or not, if there is no pod corresponding to the current task, the pod is created, and a timed destruction task is set for the pod; 3. Before the scheduled destruction task of the Pod is executed, whetherthe task staging pool for tasks that correspond to the current Pod is checked, If there is a task corresponding to the current Pod, the task corresponding to the current Pod in the task temporary storage pool is imported into the Pod, the original timing destruction task of the Pod is canceled, and a timing destruction task is set for the temporary Pod again; and if there is a task corresponding to the current Pod, the task corresponding to the current Pod in the task temporary storage pool is imported into the Pod. In order to avoid the problem of Pod being destroyed and rebuilt constantly inthe scenario of frequent task submission, the mode of destruction countdown after Pod execution is adopted, which effectively improves the actual utilization rate of Pod and reduces the risk of out-of-control system resources.

The invention provides a fish-like underwater vehicle with high maneuverability, which comprises a head, a middle section shell, a back section shell, a tail, a first pectoral fin, a second pectoral fin and a head bottom shell. The head part, the middle part shell, the back part shell and the tail part are sequentially connected through the steering gear; The caudal fin is fixed on both sides of the caudal part; The head is provided with a microcontroller, a power supply and a first steering gear; The first pectoral fin and the second pectoral fin are mounted on both sides of the head and connected with the first steering gear through a connecting rod, so that the pitch angle of the first pectoral fin and the second pectoral fin can be adjusted; A first motor and a second motor are mountedon the first pectoral fin and the second pectoral fin, and the lower end of the motor is connected with the propeller. The fish-like underwater vehicle with high maneuverability improves the maneuverability and flexibility of the fish-like underwater vehicle, and improves the obstacle avoidance ability of the fish-like underwater vehicle. Rich motion forms of fish-like underwater vehicle can notonly stabilize forward, but also achieve emergency brake, float up, change the direction of motion quickly, and enhance the adaptability of fish-like underwater vehicle to complex environment.

The invention discloses a method for synthesizing 4-fluoro-2-nitroaniline through a micro-channel reactor. The method is characterized by comprising the steps; adopting a Corning high-flux continuousflow micro-channel reactor, with the molar ratio of p-fluoroacetanilide to nitric acid being 1:(1.0-1.5) as a benchmark, respectively setting the flow rates of an acetic acid-acetic anhydride solutionof 20%-40% of p-fluoroacetanilide and 68% of nitric acid to be 40.0-100.0 mL/min and 4.0-30.0 mL/min, and preheating; carrying out a reaction for 50-200 s at a temperature of 30 DEG C-70 DEG C; and dissolving the product in water, carrying out hydrolysis reaction at the temperature of 90 DEG C-100 DEG C for 2-4 h, stirring in ice water at the temperature of 0 DEG C-5 DEG C for 0.5 h, filtering, washing a filter cake until the filter cake is weakly acidic or neutral, adding petroleum ether, mixing, and drying to obtain the orange solid 4-fluoro-2-nitroaniline with the yield of 83-94%. The method has the advantages of short time, high efficiency, few byproducts and safe, stable and controllable reaction process.

The embodiment of the invention provides a remote control bulldozer safety control method, device and system. The method comprises the steps that control signals are received at least twice in sequence; the receiving delay time of the control signals is calculated according to the at least two times of control signals; and according to the receiving delay time, a vehicle speed limiting instructionof the corresponding level is selected and output, and the level of the vehicle speed limiting instruction is positively correlated with the length of the receiving delay time. According to the remote control bulldozing and safety control method provided by the embodiment of the invention, the safety selectivity and reliability of a remote control bulldozer system can be improved, the intelligentlevel of the bulldozer can be improved, the risk that the bulldozer is out of control is reduced, and the possibility of safety accidents is reduced.

The invention provides a real-time quality control method. The method comprises steps of obtaining inspection sample data, generating one or more classifiers suitable for detecting system errors of the test sample data based on the test sample data, deploying the classifier to a real-time quality control platform; receiving the real-time inspection data to complete real-time control of the inspection quality. Positive and negative error data set training samples are introduced through simulation, so that classification accuracy of classifier is improved; and meanwhile, the model containing theoptimal model parameters is evaluated by adopting the ROC AUC to complete the training of the classifier, so that the detection data is monitored, the quality inspection performance of the detectionequipment can be further improved, and the out-of-control risk of a laboratory is reduced.

The invention is suitable for the technical field of lithium batteries, and provides a lithium battery work control method and system, and electric equipment. The method comprises the following steps: detecting parameter information of a lithium battery working in the working process of the electric equipment in real time, wherein the parameter information comprises the discharging current, the discharging power, the discharging voltage, the battery remaining capacity and the temperature; and when any numerical value in the parameter information is detected to exceed a corresponding preset threshold range, controlling the output of the lithium battery to be chopped so as to limit the current output of the lithium battery. According to the lithium battery work control method provided by the invention, the problem of danger caused by direct power failure of the lithium battery controlled by the battery management system under the abnormal conditions of over-discharge, over-temperature and the like of the existing lithium battery is solved.

The invention discloses a handlebar safety steering toque reduction force multiplication device for a motorcycle, a bicycle and a moped scooter. The device is characterized by mainly comprising 1, a driving chain wheel, a chain and a driven chain wheel; 2, a driving belt pulley, a toothed belt and a driven belt pulley; 3, a driving gear, a reverse transition gear and a driven gear; and 4, a driving planetary gear and a driven inner rack. A handlebar can realize the homodromous decelerated rotation of a front fork axle in the four steering toque reduction transmission ways, so that the steering control of a rider over the front fork axle and a front wheel can be greatly enhanced. During the riding of a user, the safety steering toque reduction force multiplication handlebar is stable in steering control indirect passivation, safe and reliable. During running, passive feedback harmful steering torque generated by a bad concavo-convex road surface on the front wheel is reduced, and the control force of dual hands is multiplied, so that excessive steering can be avoided during high-speed running, high catching performance can be maintained, falling and side turning caused by accidental collision can be reduced, out-of-control risks in running are greatly reduced, and the life and property safety of the rider, passengers and roadside pedestrians can be effectively protected.

The invention relates to a power oil discharge device of an extra-high voltage converter transformer, a control system and a control method and belongs to the technical field of the oil discharge of extra-high voltage converter transformers. The power oil discharge device comprise a body tee joint, a stop valve, a body oil tank oil discharge device, an oil conservator oil discharge device and an accident oil pool; the body tee joint is arranged between the upper part of the body oil tank and the bottom of an oil conservator; the first port of the body tee joint is connected with the bottom ofthe oil conservator through a pipeline; the second port of the body tee joint is connected with the oil conservator oil discharge device through a pipeline; the third port of the body tee joint is provided with the stop valve; the output port of the stop valve is connected with the body oil tank through the pipeline; the body oil tank oil discharge device is connected to the bottom of the body oiltank through a pipeline; the output ends of the body oil tank oil discharge device and the oil conservator oil discharge device are respectively connected with the accident oil pool through pipelines; and the body oil tank oil discharge device comprises an oil pump connected with the body oil tank through a pipeline. When an initial fire occurs, a large amount of transformer oil in the body oil tank and the oil conservator can be discharged quickly, safely and reliably.

The invention discloses a battery module. The battery module comprises a battery cell and a module shell, the battery cell comprises a battery cell shell and a plurality of pole cores, the plurality of pole cores are arranged in the battery cell shell in parallel, a heat absorption flame-retardant plate is arranged between every two adjacent pole cores, and the battery cells are located in the module shell. According to the battery module disclosed by the embodiment of the invention, the heat absorption flame-retardant plate is arranged between the two adjacent pole cores in the battery cell and can absorb and insulate heat, so that when the battery cell of the battery module is out of control, the heat absorption flame-retardant plate can control the out-of-control phenomenon of a singlepole core; and the out-of-control pole cores are effectively prevented from influencing other non-out-of-control pole cores, so that the out-of-control risk of the whole battery module can be reducedas much as possible, damage to auxiliary sampling wiring harnesses and the like of the battery module can be prevented, and the safety performance of the battery is improved.

The invention relates to an outdoor split combined tire for an electric locomotive, and relates to the technical field of electric locomotive auxiliary equipment. A fixing block is arranged on an outer connecting tube, a connecting block is arranged on the fixing block, an air bag is arranged on the connecting block, an inner connecting tube is arranged on the air bag, a sleeve is arranged on theinner connecting tube, a fixing device is arranged on the sleeve, the external connecting tube consists of a first connecting tube and an anti-sliding block, the anti-sliding block is arranged on thefirst connecting tube, the air bag consists of an upper plate, an inflating cavity, a lower plate, an air tube and an air nozzle, the upper plate is provided with the inflating cavity, the inflating cavity is provided with the lower plate and the air tube, the air tube is provided with the air nozzle, the inner connecting tube consists of a second connecting tube, a sliding block and a limiting block, the second connecting tube is provided with the sliding block, the sliding block is provided with the limiting block, the sleeve consists of a bottom plate and a barrel body, the bottom plate isprovided with the barrel body, the fixing device consists of a fixing plate and a fixing shaft, and the fixing plate is provided with the fixing shaft. The outdoor split combined tire for the electriclocomotive is high in practicality and quite convenient to use, the risk that the locomotive is out of control due to damage of a tire in a running process is reduced.

The invention provides a five-in-one fusion project management and control system, and solves the technical problems of resource waste, labor consumption, time consumption and the like of the current EPC project general contract project. The method mainly aims at a total contracted project of a project taking design as a main body, a design management system is a faucet, and the design management system is a final carrier of project implementation; a contract agreed construction range and construction rules made by a contract management system are the basis of income and risk; the purchase management system is used as a support for project cost and plays a key role in connecting the top to the bottom; the construction management system manages construction and implementation of the project; the business management system is taken as the evaluation basis of risk and cost, and is the core of risk control, budget calculation and creation of higher benefits.

The invention provides an output voltage reference limit circuit of a direct current converter. The output voltage reference limit circuit includes an output voltage reference signal circuit and an output voltage sampling signal circuit; according to the output voltage reference signal circuit, a reference signal divides voltage through a first resistor and is coupled with an out-phase input end of an operational amplifier, a sampling reference signal of a PWMU single chip microcomputer divides voltage through a second resistor and is in coupling with the out-phase input end of the operationalamplifier, and the reference signal is in parallel connection with the sampling reference signal of the PWMU single chip microcomputer; according to the output voltage sampling signal circuit, an output voltage sampling signal divides voltage through a third resistor and is in coupling with an in-phase input end of the operational amplifier, and the output voltage reference limit circuit can confine the valid range of the output voltage, increase adjustment precision and reduce out-of-control risk.

The invention belongs to the field of vehicle speed limiting control, and discloses a vehicle three-stage speed limiting control system. The vehicle three-stage speed limiting control system comprisesa request signal generation part, a speed limiting value acquisition module, a speed limiting part, a vehicle speed sensor, an electronic throttle and an electronic control unit, wherein the requestsignal generation part is provided with a function button and used for selecting the entry and exit of a speed limiting function mode; the speed limiting function mode comprises a manual speed limiting mode and a positioning speed limiting mode; the speed limiting part receives control instructions from the request signal generation part and is used for selecting and running the speed limiting function mode of the vehicle three-stage speed limiting control system; the speed limiting value acquisition module is used for acquiring a real-time speed limiting value; the vehicle speed sensor is used for generating a vehicle speed signal and acquiring a real-time vehicle speed value; the electronic throttle is provided with a position sensor for generating a position signal to control power output of a target vehicle; and the position signal corresponds to a pressing angle of the electronic throttle and is used for determining the next operation of a driver.

In order to solve the problems that due to the fact that the balance of side three wheels is inconsistent, deviation is prone to occurring in medium-high-speed braking, and rollover accidents are caused, the invention provides a double-body reverse three-wheeled motorcycle which comprises a frame, wheels, an engine and a transmission system. The wheels comprise two front wheels and a rear wheel arranged behind the middle position of the two front wheels, the two front wheels are symmetrically distributed on the left side and the right side of the front end of the frame, the rear wheel is connected to the rear portion of the frame, and the engine, the transmission system, the side bucket cabin, the driver saddle and the oil tank are all arranged above the frame. The fuel tank, the driver saddle and the sidecar cabin are arranged on the left side and the right side of the frame in a split mode, the engine is located below one side of the fuel tank and the driver saddle, the balance of the whole motorcycle is greatly improved, the problem of high-speed brake deviation of a traditional side motor tricycle is solved, and the defect that the traditional side motor tricycle turns over easily due to high-speed small-radius right turning is overcome. The problem that the right three-wheeled motorcycle turns on one side due to the change of the gravity center during high-speed and small-radius turning is solved.