33results about How to "Control inhibition" patented technology

The invention discloses a method for vaguely predicting, compensating and controlling tower top temperature during desulfurization of sintering flue gas. Aiming at the problem that the tower top temperature cannot be stably controlled due to the influence of system time delay and external disturbance during desulfurization of the sintering flue gas, the method comprises the following steps of: building a prediction model of the tower top temperature by using a heat transfer mechanism; designing a vague prediction and compensation controller of the tower top temperature by taking the difference between a prediction value and a set value as input; and compensating water injection quantity by using model rule. By the method, main disturbance in a system is introduced into the prediction model, and a compensation value is calculated according to the difference between the prediction value and the set value, so the problems of poor stability of the system caused by large fluctuation of disturbance factors and the time delay of the system are solved.

A travel control apparatus includes: a detection device configured to detect an object ahead in a travel direction of a vehicle; and a vehicle control device configured to perform a vehicle control in which the object is regarded as a control reference when a lateral movement speed of the object is directed to a travel lane of the vehicle, wherein even when the lateral movement speed of the object is directed to the travel lane of the vehicle, when the object is detected in right and left ends of a detection range of the detection device, the vehicle control device prevents the vehicle control.

The invention provides a motor control device that drives a movable portion by N (N: a natural number more than 2) motors driven by a common external command, the motor control device comprising: a module control system that feeds back a state to suppress an influence on the vibration of the movable portion and generates a module instruction including a module position instruction based on the external command; and N feedback control systems arranged to be one-to-one correspondent to the motors and carrying out feedback control on the motors one the basis of the module instruction. (N-1) feedback control systems compensate control errors in controlling each of the motors by utilizing a difference between a respective control error and a control error in the remaining one of the feedback control systems so as to realize high-speed and high-precision positioning.

The invention discloses a control method for virtual synchronous inverters. After a power grid is judged to be in an asymmetric fault state by comparing the output current of a virtual synchronous inverter with a protection value, the virtual synchronous inverter is switched from the current virtual synchronous inversion control mode to a hysteresis comparison control mode, wherein the hysteresiscomparison control mode refers to controlling the transient impulse current of the virtual synchronous inverter by using the output of a hysteresis comparator. According to the scheme, because the hysteresis comparison control mode has the advantage of fast response, the fault response speed of the virtual synchronous inverter can be synchronized, and the transient impulse current produced by thevirtual synchronous inverter can be controlled quickly within the normal range of the reference current. The purpose of fast suppression of the transient impulse current produced by a virtual synchronous inverter is achieved. In addition, the invention discloses a control device and equipment for virtual synchronous inverters, which have the same effect.

The invention discloses a method for preparing gamma-aminobutyric acid by feeding a substrate enzyme. A substrate monosodium glutamate is added into a buffer solution to prepare a monosodium glutamatesolution, the monosodium glutamate solution is filtered, and the filtered monosodium glutamate solution is fed to a bacterial slurry, so the fluctuation of the substrate is reduced, and the stable proceeding of an enzymatic reaction is facilitated; and the substrate dissolved buffer solution is used to continuously dilute a reaction system, so the enzyme content in per unit volume stably changes,and the enzyme activity is continuously stable. The method for preparing gamma-aminobutyric acid by feeding the substrate enzyme has the advantages of good buffering effect in the buffer system, andhigh yield.

The invention relates to an oil octane number self-learning method and system. The method comprises the following steps that a knocking intensity coefficient of an engine is divided into a low knocking intensity grade, a medium knocking intensity grade and a high knocking intensity grade; a knocking intensity grade of each cylinder of the current engine is judged; the number of times of knock of each cylinder of the engine at the low, medium and high knock intensity grades are counted; whether an engine oil octane number meets a self-learning condition or not is judged; and when the oil octanenumber self-learning condition is met, engine oil octane number self-learning and updating are carried out. The embodiment of the invention provides the oil octane number self-learning method and system, a learning method for identifying the oil octane number is designed in an engine control system, the knocking intensity is divided into the three different knocking grades, the oil octane numberis reduced to different degrees under different grade conditions, and the identified octane number is used as adjustment input of ignition advance angle control, so that the probability of the knock of the engine is reduced, and the damage of the frequent knock to the engine is reduced.

The invention discloses a shear thickening effect-based milling chatter suppression and deformation control method for a thin-wall part. The method comprises the following steps that: a shear thickening liquid is prepared; a thin-wall part to be machined is fixed to a workbench of a machine tool through a clamp; the side, opposite to a machining face, of the thin-wall part to be machined, is filled with the shear thickening liquid, and the shear thickening liquid makes contact with the opposite face of the machining face; and a numerical control milling center is started to machine the thin-walled part through a hard alloy cutter, a milling mode is a smooth milling mode, after machining is completed, the part is taken out and cleaned, and the whole machining process is completed. According to the method, the unique rheological mechanical property of the shear thickening fluid is applied to milling of the thin-wall part, under the impact action of milling dynamic load, the thickening effect of the shear thickening fluid greatly improves the rigidity of the thin-wall part, the damping in the milling process is increased, and milling chatter suppression and machining deformation control of the thin-walled part can be realized at the same time.

The invention relates to the technical field of papermaking, and provides a preparation method of mildew-proof glass spacing paper in order to solve the problem that existing glass spacing paper is poor in mildew-proof effect. The method comprises the following steps: (1) preparing raw paper: chemically soaking bleached softwood pulp and bleached hardwood pulp, and pulping; mixing the bleached chemical pulp, a filler and cationic starch, filtering with clear water, dehydrating with a net part, soaking in a mildew-proof network polymer, squeezing and drying to obtain raw paper; and (2) coatinga hydrophobic layer: coating the surface of raw paper with the hydrophobic modified polymer, drying, and carrying out hot pressing to obtain a finished product. The glass spacing paper has better hydrophobicity and waterproofness; compared with the prior art, the anti-mildew agent in the paper is sealed in the network polymer, the cross-linking degree is improved, the anti-mildew agent is prevented from being separated as much as possible, the anti-mildew agent is gradually released only when the water content in the paper is increased, waste caused by premature release of the anti-mildew agent is avoided, and high density, high strength and high surface smoothness are achieved.

A power conversion device according to the embodiment includes a control device (10) having a mechanism for switching and implementing a first control mode and a second control mode. In the first control mode, a first voltage command value and a second voltage are generated based on new voltage command values of phases obtained by superimposing zero-phase voltages of a power converter (100) according to voltage command values for the phases of the power converter (100). In the second control mode, the first voltage command value and the second voltage command value are generated based on the voltage command values of each phase of the power converter (100) and the maximum and minimum values.

The invention provides a gas analysis device and method based on the spectrum technology. The gas analysis device comprises a light source, a detector, a voice coil motor and an analysis module, wherein the light source emits measurement light matched with to-be-detected gas; the detector converts measurement light interacting with the to-be-detected gas into electric signals and transmits the electric signals to the analysis module; the detector is fixed to the voice coil motor and moves back and forth on a light path; the analysis module processes the electric signals through the spectrum technology, and accordingly information of the to-be-detected gas is obtained. The device has the advantages of being high in precision, simple in structure, low in cost and the like.

The invention relates to an acrylic acid copolymerized grafted starch environmental-protection adhesive, which comprises the following raw materials by mass: 25-35 parts of oxidized starch, 55-65 parts of vinyl acetate, 20-30 parts of butyl acrylate, 2-4 parts of N-hydroxymethyl acrylamide, 1-3 parts of sodium lauryl sulfate, 2-4 parts of OP-10, 0.6-0.8 part of ammonium persulfate, 0.6-0.8 part ofsodium hydrogen sulfite, 0.5-1 part of protein powder, and 310-480 parts of water, wherein the environmental-protection adhesive is subjected to microwave heating treatment, the microwave working frequency is 2450 MHz, and the heating time is 30-50 S. According to the present invention, the environmental-protection adhesive can well control free formaldehyde, and the detection results (detectionmethod GB/T 17657-2013) show that the formaldehyde emission is only 0.17 mg/L; the detection results (detection method GB/T 10004-2008) show that the environmental-protection adhesive does not containbenzene-based solvent, toluene and xylene; and the environmental-protection adhesive has advantages of simple composition, simple processing method and wide application range.

The invention belongs to the technical field of reluctance motor type vehicle control, and in particular relates to a reluctance motor type vehicle active stabilizer bar control method. A reluctance motor type vehicle active stabilizer bar comprises a main control chip, a gyroscope, a power supply circuit, a power conversion circuit, a power trigger circuit and a current acquisition circuit, themain control chip comprises a main program, a system initialization program, an infinite loop program and a limit position protection program, and the method comprises the following steps: step 1, starting the main program; 2, performing the system initialization program; 3, performing enabled interrupt; 4, performing the infinite loop program; 5, performing response interrupt; 6, ending the interrupt; and 7, executing step 4 again. The invention aims to provide the reluctance motor type vehicle active stabilizer bar control method which is good in inclination control effect and high in anti-interference performance.