62results about How to "Meet the control requirements" patented technology

The invention relates to one mixture dynamic car motor controller based on DSP, wherein, the integral controller sends operation mode information to control module composed of permanent magnetic motor vector control module, space voltage vector impulse modulation, A/D module and sensor measurement process module, wherein, the motor control module determines its control system structure according to the operation mode and speed order and torque order to realize current, speed, position and its fault testing for motor control.

The invention belongs to the technical field of metal material processing, and relates to a method for reducing forging residual stress of turbine disks via gradient speed control on the basis of numerical calculation. According to the method, influences, on residual stress distribution, of forging speeds of turbine disks in the forging process are analyzed by combining a numerical simulation method and experimental tests, and a novel method for reducing residual stress of turbine disks via gradient speed control is given on the basis of a law of influences, on the residual stress, of the forging speeds, so that the shaping quality and service life of the turbine disks can be improved and prolonged. Aiming at the residual stress problems of turbine disks, numerical modeling is carried outon the forging process to analyze the stress strain and temperature field distribution, in each stage in the forging process, of the turbine disks, so that important information such as flowing law inthe turbine disk forging process, thermal parameter distribution in disk forge pieces, load-stroke/energy-stroke curves, mould working stress and the like in forging process and mould design processis disclosed.

The invention provides a driving mechanism for a multi-degree-of-freedom flexible robot for single-incision laparoscopic minimally invasive surgery, belongs to the technical field of surgical robots, and aims at solving the problems of small overall integrity and large overall size of the driving mechanism of the existing single-incision laparoscopic surgery robot. The mechanism is that a first motor is in transmission connection with one end of a first motor output shaft; a second motor is in transmission connection with one end of a second motor output shaft; a third motor is in transmission connection with one end of a third motor output shaft; a fourth motor is in transmission connection with one end of a fourth motor output shaft; a fifth motor is in transmission connection with one end of a fifth motor output end; a sixth motor is in transmission connection with one end of a sixth motor output shaft; a seven motor is in transmission connection with one end of a seventh motor output shaft; the other one of the ends of the plurality of motor output shafts is in transmission connection with a bearing mounted a front end supporting plate of a driving box. The driving mechanism is applied to single-incision laparoscopic minimally invasive surgery.

Disclosed are a full-rotation sense type guide tool and guide method. According to the full-rotation sense type guide tool and guide method, the control mode and guide parameters of the guide tool can be determined, a hole trajectory is automatically controlled, the work efficiency of the guide tool is improved, and the guide control requirement of directional drilling is met. The guide tool is composed of an abutting and expanding unit, a power supply unit, a measuring control unit and a guide execution unit from top to bottom. Control of the rotation guide tool can be optimized, and closed-loop guide control can be achieved; the guide drilling operation efficiency and the hole trajectory control precision can be improved; and the control requirement of a large extended reach well, a horizontal well of a complex geologic structure and a geosteering drilling track can be met.

The invention discloses a function safety circuit for a vehicle body control system, and a control method. According to the invention, a working state of an MCU module is monitored and judged through a monitoring module, when the MCU module is judged to normally work, the MCU module sends a pulse scanning signal to a combined switch drive module, and the combined switch drive module acquires the state information of a combined switch, and control signals are output to an output detection module according to the state information of the combined switch, and the output detection module controls front windscreen wipers, low-beam lamps and position lamps; and when the MCU module is judged to be failed, the output detection module acquires the state information of the combined switch, and the front windscreen wipers, the low-beam lamps and the position lamps are directly controlled through the combined switch. According to the invention, an MCU module monitoring method and a switch straight-through tube connection method are adopted, and when the MCU module is failed, the front windscreen wipers, the low-beam lamps and the position lamps can still be normally operated through the switch straight-through tube connection method. The function safety circuit has the functions of fault monitoring, early warning and alarming, and the like, meets the requirements of ISO26262 functional safety standards on vehicle body control, and guarantees personal and property safety.

The invention discloses a fully automatic ammonia-preparing ammonia-adding integrated machine device and a fully automatic ammonia-preparing ammonia-adding method. According to the device and method provided by the invention, when ammonia is automatically prepared, ammonia gas and desalted water are introduced respectively, electrical conductivity and a liquid level signal in an ammonia water solution tank are collected, an ammonia gas electric valve and a desalted water electric valve are controlled by using a PLC to control the electrical conductivity and the liquid level value in the ammonia solution tank to reach a required range, so that stability of a concentration of ammonia water entering a water-vapor system is ensured; and automatic ammonia addition adopts a feedforward compensation PID control method, a condensate water main pipe flow rate is introduced as a feedforward amount, a electrical conductivity value of an inlet of an deaerator is collected at the time, after calculation is performed by the PLC, a frequency converter is used to control an ammonia adding metering pump to ensure that the electrical conductivity of the inlet of the deaerator reaches a desired value, so that automatic adjustment of an addition amount of ammonia is realized.

The invention provides a control apparatus for a multi-pole flexible direct current power transmission system. The control apparatus comprises a multi-pole control layer, a pole control layer and a converter valve control layer which are connected in sequence, wherein the multi-pole control layer is used for coordinately controlling active power and reactive power of multiple flexible direct current poles to realize a general control object for active power and reactive power of a full station; the pole control layer is used for completing independent control on active and reactive power of single flexible direct current poles; and the converter valve control layer is used for completing control on a converter. The invention also discloses a control system and a control method for the multi-pole flexible direct current power transmission system. All in all, coordinative control for the multiple flexible direct current poles can be realized, and overall control requirement on the operation of actual multi-pole flexible direct current power transmission engineering can be satisfied.

The invention discloses a SiC MOSFET active driving circuit with improved driving performance. The instantaneous change states of the drain current ID and the drain-source voltage Vds are introduced to judge the switching process state of the SiC MOSFET; an opening process detection judgment signal and a closing process detection judgment signal which are used as intermediate quantities are obtained through logic judgment; finally, a driving current injection control circuit and a driving current shunt circuit are controlled; driving current Ig2 or shunt driving current Ig3 is injected in different stages; the driving current Ig1 output by the main driving circuit is matched to obtain the control effect of the driving current IG of various gates, so that the switching loss is not increasedwhile the voltage and current overshoot is inhibited according to the active driving circuit disclosed in the invention, and the switching speed of the SiC MOSFET is basically not influenced.

The invention relates to an unmanned aerial vehicle-trolley formation control method under an all-weather condition. The method comprises the following steps: firstly, constructing a topological structure of an unmanned aerial vehicle-trolley patrol formation, and establishing a state space model of an unmanned aerial vehicle-trolley patrol formation control system on the basis of a Markov model by considering four typical weather conditions and influences of system internal faults and nonlinear interference; by adopting a communication protocol triggered by an adaptive event, communication congestion is relieved, energy consumption is reduced, and a corresponding closed-loop system model is obtained by introducing a control protocol. Then, random stability analysis and consistency analysis are carried out on the closed-loop formation system by utilizing a random analysis method; and finally, solving a feedback gain matrix of the formation control system by using a linear matrix inequality method to obtain a parameter value of the controller. The invention provides an effective control method for all-weather unmanned aerial vehicle-trolley patrol formation.

The invention relates to a motor-driven type throttle servo system. The motor-driven type throttle servo system comprises an engine speed sensor (10), an accelerator pedal position sensor (11), a motor position sensor (12), a servo system electronic control unit (13) and a motor (14), wherein the engine speed sensor (10) is used for sensing the engine speed and outputting an engine speed signal; the accelerator pedal position sensor (11) is used for sensing an accelerator pedal position and outputting an accelerator pedal position signal; the motor position sensor (12) is used for sensing the motor position and outputting a motor position signal; the servo system electronic control unit (13) is used for collecting the engine speed signal, the accelerator pedal position signal and the motor position signal; the motor (14) is used for adjusting according to a control instruction sent by the electronic control unit. According to the motor-driven type throttle servo system, the throttle servo system is designed into an independent module, and when an automatic mechanical speed change electronic control unit coordinates with an electronic control engine for work, the module does not need to be installed without influence on other functions; when the automatic mechanical speed change electronic control unit needs to coordinate with a non-electronic control engine for work, the module is installed, and the control requirement on the engine speed can be met.

The invention provides a detection method of a relevant substance in a compound amino acid injection. According to the method, 5-hydroxyl tryptophan and L-kynurenine are taken as pointer impurities; separation and baseline stability of various amino acids and the relevant substance contained in the amino acid injection are optimized by a trifluoroacetic acid-heptafluorobutyric acid ion pair chromatographic method; and the detection method is high in detection sensitivity, accuracy and repeatability and can meet requirements on control of the relevant substance in the compound amino acid injection.

The invention provides an activating circuit for a high-voltage thermal battery unit of a servo power supply, belonging to the electromechanical field. According to the activating circuit, the problems that an existing high-voltage thermal battery unit is long in activation time and low in reliability are solved. The activating circuit comprises a first activating loop, a redundancy activating loop and an activating signal generating circuit, wherein the activating signal generating circuit is used for outputting impulse voltage signals; the first activating loop comprises a first electromagnetic relay and a second electromagnetic relay which are normally open relays; one ends of three switches of the first electromagnetic relay are connected with one ends of three switches in the second electromagnetic relay through a first activating bridge of the high-voltage thermal battery unit in a to-be-activated servo power supply, the other ends of the three switches in the first electromagnetic relay are simultaneously connected with an output positive electrode of the activating signal generating circuit, and the other ends of the three switches in the second electromagnetic relay are simultaneously connected with an output negative electrode of the activating signal generating circuit. According to the scheme, the high-voltage thermal battery unit is short in activation time and high in reliability.

A composition of a loose mass of comminuted raw cotton linter fibers has a bulk density of at least 8 g/100 ml and at least 50 % of the fibers in the mass passes through a US standard sieve size #10 (2 mm opening). This composition is made by obtaining a loose mass of first cut, second cut, third cut, or mill runs raw cotton linters or mixtures thereof and comminuting the loose mass of raw cotton linters to a size wherein at least 50 % pass through a US standard sieve size #10 (2 mm opening). This composition is used to make cellulose ether derivatives.

The invention discloses a construction method for a large-span overhung ultra-limit structure. The method includes the following steps that 1, construction unit classification is carried out on the ultra-limit structure, wherein the internal part of the structure and a middle strip block of an upper steel structure of the overhung part of the structure are classified as a first construction unit, and the rest part of the overhung part is classified as a second construction unit; 2, construction of the first construction unit is completed on a tower floorboard through a high-altitude assembly method and a cantilever installation method; 3, construction of the second construction unit is completed through integral lifting and slipping after integral lifting. According to the method, the multiple technologies of high-altitude assembly, integral lifting, slipping after integral lifting and the like are adopted, labor time is shortened, material expense and equipment expense are reduced, and the requirement for integral control over the construction technology, quality, safety, progress, cost and the like is met.

The invention discloses a black start alternating current excitation device of a pumped storage variable speed unit. The black start alternating current excitation device comprises: a black start auxiliary power module comprising an auxiliary alternating current power supply, an alternating current power supply voltage transformation unit and a first rectification unit; a main excitation power module comprising a network side converter, a direct current link and a machine side converter; a pre-charging module comprising a second rectifying unit and a current limiting unit; and a black start alternating current excitation control module comprising a sensor unit, a control calculation unit and an output control unit. The device can meet the requirements of black start of the pumped storage variable speed unit on the alternating current excitation device and control thereof, and achieves the black start of the variable speed unit. The invention also provides a control method of the blackstart alternating current excitation device of the pumped storage variable speed unit.

The present invention discloses a gesture recognition device for household appliances and a recognition method of the gesture recognition device. The gesture recognition device for the household appliances includes a plurality of infrared pyroelectric sensors and a processor; the plurality of infrared pyroelectric sensors are electrically connected with the processor; the infrared pyroelectric sensors are used for detecting incident human body infrared light, generating sensing signals and transmitting the sensing signals to the processor; and the processor generates corresponding control commands for controlling the household appliances according to the sequence of the sensing signals emitted by the infrared pyroelectric sensors. With the gesture recognition device for the household appliances and the recognition method of the gesture recognition device of the invention adopted, the difficulty of gesture recognition can be decreased, the rate of the gesture recognition can be improved, and hardware resources can be saved.

The invention discloses an internet forum message content similarity measuring method and system. In the method, the content similarity between test text message dk and reference text message d is calculated according to the test state vector Sk={s1k, s2k, ..., sMk} and the reference state vector S={s1, s2, ..., sM}. The content similarity between the test state vector Sk={s1k, s2k, ..., sMk} andthe reference state vector S={s1, s2, ..., sM} is not symmetrical, that is to say, the value of the content similarity between the two text messages is related to semantic features of the two text messages and also related to the selection of a reference message, the internet forum sensitive information control requirements are better met, and the measurement accuracy of the internet forum messagecontent similarity is improved.

The invention discloses an automobile skylight sunshade curtain, which comprises a winding mechanism and a sunshade curtain mechanism. The winding mechanism is connected to the sunshade curtain mechanism in a matched mode and is used for completing movement of the sunshade curtain mechanism. The sunshade curtain mechanism is arranged on an automobile roof; a skylight opening is formed on the automobile roof, and the sunshade curtain mechanism is connected to the skylight opening in a sliding mode. The problems that most automobile sunshade curtains are only provided with one layer, the light transmittance of the sunshade curtains cannot be adjusted, and the requirement of people for light control cannot be met are solved.

The invention discloses an industrial circulating water pH automatic control device and a control method. The device comprises a sampling unit, an acid adding unit and a control unit, wherein the sampling unit comprises a circulating water pump and a pH online measuring instrument, and an inlet and an outlet of the circulating water pump communicate with an industrial circulating water tower through pipelines; the pH online measuring instrument is arranged on an outlet pipeline of the circulating water pump; the acid adding unit comprises an acid solution tank and an acid adding pump, an outlet of the acid solution tank communicates with an inlet of the acid adding pump, and an outlet of the acid adding pump communicates with the industrial circulating water tower; and the control unit comprises a touch screen and a PLC, the touch screen is in communication connection with the PLC, and the PLC is electrically connected with the pH online measuring instrument and the acid adding pump. According to the method, the pH of the industrial circulating water can be conveniently and automatically controlled without manual intervention.

The invention relates to a weft accumulator control system based on an STM32 single-chip microcomputer. The weft accumulator control system comprises a weft accumulator microprocessor, a weft storagemotor connected with the weft accumulator microprocessor, and a monitoring sensor; the weft accumulator microprocessor comprises a signal processing module, a communication module and a motor drivingmodule, the signal processing module comprises an STM32 chip, a minimum system, a weft accumulator switching circuit and a monitoring sensor receiving circuit; the weft accumulator switching circuit generates a switching signal and transmits the same to the STM32 chip and the minimum system of the weft accumulator microprocessor to control the start and stop of the weft storage motor and meanwhilecontrolling the positive and negative rotation of the weft storage motor; the monitoring sensor receiving circuit is used for receiving a signal of the monitoring sensor, transmitting the signal to the STM32 chip and the minimum system of the weft accumulator microprocessor for processing, and monitoring and adjusting the working state of the weft accumulator; and the weft storage motor is a brushless DC motor, and the monitoring sensor comprises a number of turns sensor, a weft yarn position sensor and a yarn breakage sensor. The system is high in response speed, moderate in cost and good incost performance.

The invention provides a weeding corrosion inhibition granule and a preparation method thereof, and belongs to the technical field of a herbicide. The raw materials of the weeding corrosion inhibitiongranule comprise a phase A and a phase B, wherein the phase A comprises modified bentonite porous granules; the phase B comprises furan sulcotrione, cyclosulfamuron and penoxsulam; the phase B is uniformly distributed on the surface and in the holes of the phase A. The self-made furan sulcotrione is used; the purity is higher; the medicine effect is better. In addition, the phase B is introducedin the bentonite porous modification process; active ingredients of the phase B are enabled to be uniformly distributed in the phase A; the adhesion force is increased, so that the slow release performance is improved.