109results about How to "Avoid control failure" patented technology

The invention discloses a method for scheduling a heliostat field in a tower solar thermal power station. In the method, an open-closed loop combined control mode is adopted; in open loop control, the control direction and position of a heliostat are computed in real time according to the running rule of the sun, the latitude and longitude of the heliostat as well as the geometric relationship between the positions of the heliostat and a heat absorber; and in closed loop control, a target position corresponding to each heliostat is determined through a closed loop sensor, and the heliostat is accurately tracked according to a real-time angle value of the heliostat fed back by the closed loop sensor, so that the energy-flux density of the heliostat field is homogenized and scheduled. According to the method, automatic homogenizing and scheduling of the energy-flux density projection of the heliostat field are realized, and the defects of poor energy-flux density homogenizing effect and unavailable self-correction caused by a large tracking error existing in open loop control are overcome effectively; and moreover, the method is easy to implement and is convenient to operate.

The invention relates to an area cleaning image control method of a robot cleaner. The robot cleaner has a cleaning path memory function, a working face image generating function and a working face image processing function, and the robot cleaner is provided with a cleaning control terminal; initial cleaning is conducted on a working face by the robot cleaner, and a cleaning path is recorded; according to the cleaning path, a working face area image is generated, a copy of the working face area image is transmitted to the cleaning control terminal, the cleaning control terminal selects a cleaning area in the working face area image, and the robot cleaner matches the selected cleaning area with the working face area image so as to determine a travelling path. The method has the advantages that the robot cleaner creates the working face area image and the corresponding cleaning path according to a specified house, so that the situation that control is out of operation due to the influence of environmental factors is avoided; the cleaning control terminal controls the robot cleaner in a remote control mode, the robot cleaner can be flexibly controlled to clean a specified area, and the influence on activities of indoor people is avoided.

A controller for a vehicle including at least one motor driving wheels, an inverter driving the motor, and a boosting converter supplying a dc power supply current to the inverter, is provided with a control portion performing rectangular wave control and non-rectangular wave control on the inverter in a switched manner. The control portion has an emergency switching condition for switching control from the rectangular wave control to the non-rectangular wave control, as a determination reference, and when the emergency switching condition is satisfied while the rectangular wave control is being executed (YES at step S5), the control portion instructs the boosting converter to lower target output voltage (S7). Preferably, the control portion determines that the emergency switching condition is satisfied when a q-axis current supplied from the inverter to the motor exceeds a prescribed threshold value.

The invention discloses a 3D NAND flash memory structure and a manufacturing method. The method is characterized in that the method comprises the steps: providing a substrate, and forming a plurality of array string units, wherein the array string units are isolated through isolating trenches; each array string unit comprises polycrystalline silicon, a polycrystalline silicon dielectric layer, first material layers, and second material layers, wherein the first and second material layers are stacked together; the polycrystalline silicon dielectric layer is formed in the polycrystalline silicon; the second material layers are respectively formed between the adjacent first material layers; a wet etching method is used for removing the second material layers of the array string units, and a plurality of first recesses are formed; the inner walls of the isolating trenches and the inner walls of the first recesses are sequentially provided with grid blocking layers, adhesive layers and grid layers; the first recesses are filled with the grid layers; the method also comprises the steps: removing the grid layers through annealing treatment, and removing the grid layers outside the first recesses, and the adhesive layers, so as to effectively removing the grid layers of the side walls and the surface of a 3D NAND flash memory.

Provided is a method for identifying the early failure root causes of products based on dimensionality reduction and a support vector machine (SVM). The method comprises steps of: 1, constructing a relevance tree conceptual model oriented to a fault feature; 2, constructing a failure root cause node big data model; 3, collecting product life cycle quality and reliability data; 4, constructing a principal component analysis technical model; 5, constructing a relevance tree based on the score of the principal components; 6, constructing a SVM technical classification model; 7, ranking the priorities of the nodes based on the SVM technical classification model; and 8, analyzing results. The method breaks through the redundant problem of high-dimensional big data from the point of view of product reliability formation big data, and fundamentally makes up for the imprecision and misjudgment of early failure mechanism cognition caused by ignorance of high-dimensional data characteristic space in a traditional sense, improves the recognition efficiency and accuracy of early failure root cause in big data environment, and provides manufacturers with clear objectives and objects to implement active early failure control strategy in engineering application.

Disclosed is a Ringer solution infusion controlling apparatus which enables the infused amount and infusion state of a Ringer solution to be easily monitored by an administrator and which automatically blocks infusion of the Ringer solution when the infusion of the Ringer solution is completed. The Ringer solution infusion controlling apparatus includes a body coupled to a chamber receiving a Ringer's solution from a Ringer bottle in which the Ringer's solution is stored and ejecting the Ringer's solution in a state in which the Ringer's solution is maintained at a constant level by first coupling means, a sensing ball provided in the chamber and floating on the Ringer's solution, and elevating according to the level of the Ringer's solution in the chamber, an elevation sensor installed in the body and sensing elevation of the sensing ball, a Ringer's solution transfer blocking unit installed in the body and having a Ringer hose passing therethrough, the Ringer hose allowing the Ringer's solution ejected from the chamber to be transferred, and blocking transfer of the Ringer's solution by compressing the Ringer hose when it is detected by the elevation sensor that the sensing ball deviates from a predetermined range, and a wireless transmitter installed in the body and wirelessly transmitting a Ringer's solution transfer blocking signal to a nurse's room when the transfer of the Ringer's solution is blocked by the Ringer's solution transfer blocking unit.

The invention discloses an air intake control device of an engine and the engine therewith, relates to the technical field of engines, and aims to solve the problems that as the area of the air intake cross section of the air intake manifold can not be controlled efficiently in the prior art, the variable control is not stable. The air intake control device of the engine includes a valve mounted in an air intake manifold and a driving mechanism driving the valve to open and close; the valve includes a transmission shaft and a valve sheet, wherein the valve sheet is fixed on the transmission shaft, and the transmission shaft is connected with the driving mechanism; the driving mechanism includes a limiting rod, wherein a first connecting part is arranged at one end of the limiting rod, and a second connecting part is arranged at the other end of the limiting rod; the first connecting part is connected with the transmission shaft, and the second connecting part is connected with a signal actuator; and the first connecting part and the second connecting part are arranged on the same side of the limiting rod. The engine includes the air intake manifold and the air intake control device of the engine. The air intake control device of the engine and the engine therewith are used for controlling the air intake system of the engine.

The invention discloses an air way module of an air cooling refrigerator and the air cooling refrigerator, relates to the technical field of refrigerators, and solves the problem of easiness in air leakage of an air door in an air way module in the prior art. The air way module of the air cooling refrigerator comprises an air supply air way module; the air supply air way module comprises an air supply air way shell; an air door accommodating cavity, a first air way cavity and a second air way cavity are formed in the air supply air way shell; inlets of the first air way cavity and the second air way cavity respectively communicate with the air door accommodating cavity; outlets of the first air way cavity and the second air way cavity are respectively used for connecting with two chambers of the refrigerator; an air door module is arranged in the air door accommodating cavity, and comprises a first air door and a second air door capable of rotating; the first air door is corresponding to the first air way cavity; the second air door is corresponding to the second air way cavity; and the rotating directions of the first air door and the second air door during opening are opposite to the flowing direction of air in the air door accommodating cavity. The air way module of the air cooling refrigerator is used for supplying air into the chambers of the air cooling refrigerator.

The invention discloses a sweeping robot sweeping image control method. The sweeping robot sweeping image control method comprises the following steps: acquiring a working face image by the sweeping robot and dividing the acquired working face image into a background area and a working area; planning the working route of the sweeping robot in the working area by combining with the distribution ofto-be-cleaned garbage; transmitting the planned working route of the sweeping robot to the sweeping robot and enabling the sweeping robot to work according to the received working route; and when theworking route shown by the current working face image transverses the end, repeating the above steps.

The invention discloses an attitude control method for a solar sail spacecraft, which can realize attitude control over the spacecraft. According to the method, a variable-reflectivity flexible thin-film device is pasted to the outer edge area of the upper surface of the solar sail of the spacecraft, and the reflectivity of the variable-reflectivity flexible thin-film device is changed by controlling the voltage of the variable-reflectivity flexible thin-film device so as to change the light pressure on the surface of the solar sail of the spacecraft to generate a differential moment, and further realize attitude control over the spacecraft. An attitude controller is the thin-film device and can be integrated with the solar sail spacecraft more easily to improve the integration level and the reliability of the solar sail. In addition, the attitude controller has a light weight, can greatly reduce the weight of the spacecraft, increases the load ratio and greatly improves the solar sail attitude control performance. With no mechanical structure, the attitude controller has high reliability.

The invention discloses a chemical mechanical grinding device. The device comprises a polishing head and a polishing liquid output device which are arranged at a certain interval in the horizontal direction; the polishing liquid output device is arc; the arc is matched with a part of outer circumference shape of the polishing head; and at least two polishing liquid output heads are uniformly distributed on the polishing liquid output device along the arc direction. Meanwhile, the invention also discloses a chemical mechanical polishing method; and by the device and the method, the chemical mechanical polishing accuracy can be improved.

The invention discloses a switched reluctance motor (SRM) rotor position square wave signal fault diagnosis and fault tolerance method, comprising the steps of: performing Fourier expansion spectrum analysis on the position square wave signal outputted by an SRM position sensor; diagnosing in real time whether the position square wave signal goes wrong by checking whether a secondary harmonic coefficient is zero; determining that the position sensor is out of order if the secondary harmonic coefficient is not zero, thereby realizing real time fault monitoring and diagnosis; and based on a position signal fault tolerance control method after a position square wave signal fault, utilizing residual normal position square wave signals to calculate a rotor rotating speed and to estimate an average rotating speed after the diagnosis that the position square wave signal outputted by the position sensor goes wrong, and utilizing the average rotating speed to calculate a rotor position to realize fault tolerance control after position square wave signal faults, thereby improving the reliability of an SRM driving system, and avoiding SRM control failure caused by rotor position signal decoding disorder.

A pump drive motor control apparatus is applied to a motor for driving a hydraulic pump which pumps brake fluid returned to a reservoir as a result of ABS control and supplies the pumped brake fluid to a hydraulic circuit. When a motor inter-terminal voltage becomes equal to or less than a voltage threshold in a period during which a motor control signal is at a low level (supply of electricity to the motor is stopped), the control apparatus changes the motor control signal to a high level (resumes the supply of electricity) for a predetermined time, to thereby control the rotational speed of the motor. The control apparatus reduces the rotational speed of the motor by lowering the voltage threshold, which affects the rotational speed of the motor, with the vehicle body deceleration during ABS control, which corresponds to the friction coefficient of road surface, which determines the required discharge flow rate of the hydraulic pump.

The invention discloses a power-on/power-off driving circuit and a control method therefor, and belongs to the field of the electronic technology. The power-on/power-off driving circuit comprises a load, a switch circuit, a relay and a single-source driving circuit, wherein one end of the load is connected with the positive electrode of a first external power supply; the first input end of the switch circuit and a normally open contact of the relay are connected with the other end of the load separately; the output end of the switch circuit and a normally closed contact of the relay are connected with the negative electrode of the first external power supply; one end of the coil in the relay and the first input end of the single-source driving circuit are connected with the positive electrode of a second external power supply separately; the other end of the coil in the relay is connected with the second input end of the single-source driving circuit; the first output end of the single-source driving circuit is connected with the second input end of the switch circuit; the second output end of the single-source driving circuit is connected with the output end of the switch circuit; and the third output end of the single-source driving circuit is connected with the negative electrode of the second external power supply. According to the power-on/power-off driving circuit, the volume of the power-on/power-off driving circuit is reduced.

The invention provides a reliably controlled device for recovering and disabling a constant-speed cruising system, which comprises a pedal fixing support and a pedal arm, wherein the pedal fixing support is provided with a bearing, one end of the pedal arm is arranged on a vehicle body through a rotating shaft of the pedal arm, and the other end of the pedal arm is movably arranged on the bearingof the pedal fixing support through a pedal shaft fixed on the end part of the other end per se; and the device is particularly characterized by further comprising an angle sensor for detecting the rotation angle of the pedal arm, and the output end of the angle sensor is connected with a controller used for controlling the work of the constant-speed cruising system. By utilizing the angle sensorto detect the rotation angle of the pedal arm and transmit the rotation degree to the controller in real time, the controller can rapidly acquire the driving destination of a driver so as to disable or recover constant-speed cruising, so that control failures caused by the reasons that the pedal does not reset in place, a brake switch contact is abraded or a brake switch gasket is abraded and thelike can be avoided, and the control is more reliable.

The invention provides a remote control device for a vehicle key. The remote control device is used for solving the technical problem of how to remotely control and unlock a vehicle door. The remote control device for the vehicle key structurally comprises a key storage bin, a key key pressing mechanism and a controller, the appearance of the key storage bin is matched with the appearance of a vehicle key. The key key touch pressing mechanism is provided with two groups of pressing components; the setting positions of the two pressing components are respectively aligned with the setting positions of an unlocking key and a locking key on a vehicle key placed in the key storage bin; the pressing stroke of the pressing component meets the requirement that the unlocking key or the locking keyis triggered and returns to the original position in time after the unlocking key or the locking key is triggered. And the controller is electrically connected with a driving device of the key key pressing mechanism. The vehicle door can be remotely unlocked.

The invention discloses a vehicle lane change detection and control method for intersection induction control. The method specifically comprises the following steps: (1) determining the specific position of a vehicle detection point at an entrance road section of an intersection; (2) setting a guide lane vehicle detection point; (3) establishing a driving path pairing relationship and a directionjudgment rule between the vehicle detection points of the intersection entrance road section and the vehicle detection points of the guide lane; and (4) establishing a vehicle detection logic judgmentmechanism and a precise induction control logic algorithm, and implementing signal real-time induction control on the premise of accurately judging the passing requirements of the vehicle in different directions. According to the invention, the single setting and simplified control mode of the original vehicle detector are improved; multiple detection point linkage judgment logics are adopted, the passing direction of vehicles coming from the intersection is accurately judged, accurate induction control is executed, the vehicle passing efficiency is further effectively improved when inductioncontrol is implemented at the intersection, and control delay of the vehicles is greatly reduced.

The invention provides an array substrate repairing method, an array substrate, a display panel and a display device. The array substrate comprises an underlayer substrate, a storage capacitor, switching diodes, grid lines and data lines, and multiple pixel areas are defined by the grid lines and the data lines; capacitance plates are arranged between the common line of the storage capacitor and apixel electrode in each pixel area; the capacitance plates comprise a first capacitance plate and at least one second capacitance plate, the first capacitance plate and the second capacitance plate are separately arranged, the first capacitance plate is close to the switching diode corresponding to the pixel area, and the first capacitance plate is electrically connected with the drain of the switching diode and meanwhile electrically connected with the pixel electrode; and the second capacitance plate is electrically connected with the pixel electrode. According to the method provided by theinvention, the broken area of the data line on the array substrate can be effectively repaired, the normal display function of the pixel unit can be ensured, meanwhile the dark spot operation of thepixel unit is not affected, and the display effects of the display panel and the display device are ensured.

The invention discloses a diagnostic control method and system based on a water level data process of a water collecting well, a storage medium and a terminal. The method comprises the following steps that: a process relationship between data and time of a water collecting well is set, wherein the data include control data and non-control data, the control data are water levels and the non-control data include one or more of water level rising/falling speeds, a water amount of a water collecting well, a flow of a draining pump, running/stopping time of the draining pump, a motor current, and a motor voltage; limit process intervals of all data are set, the water level of the water collecting well is detected in real time, and when the water level exceeds the limit process interval, water level error-reporting diagnosis is performed; and/or non-control data of the water collecting well are collected in real time, and when the non-control data exceed the limit process interval, error reporting diagnosis of the non-control data is performed. According to the invention, error reporting diagnosis is performed when process abnormity of the water level data and the non-control data of the water collecting well occurs instead of corresponding controlling; and controlling is not performed only when the data process is diagnosed comprehensively.