141results about How to "Achieve control effect" patented technology

The invention discloses a traffic signal dynamic control method based on a big data analysis platform, comprising the following steps: 1. data collection; 2. historical information; 3. analysis; 4. prediction, early warning, decision-making; 5. dynamic feedback control; The invention also discloses a traffic signal dynamic control system based on a big data analysis platform, including an urban road traffic network module and a big data analysis platform module; According to the actual situation of the environment, according to the maximum traffic flow requirements and the signal light status at road network intersections, dynamically adjust the timing of multiple road intersection signal lights to achieve the optimal control effect. With the support of the big data analysis platform, multiple The coordinated linkage control of signal lights at each intersection solves the linkage control of multiple intersections under the current high-density traffic state, so as to achieve the purpose of regional traffic optimization control.

The invention discloses a method and a device for automatic landing leveling control of a small unmanned aerial vehicle. The landing leveling control device consists of a pitch attitude control circuit and an airspeed control circuit. Aiming at the problem that unmanned air vehicle with a simple sensor can not acquire vertical speed information and vertical acceleration speed information with required precision, the method and the device make full use of an available sensor information and calculate an expected pitch attitude g(t), an expected pitch attitude g'(t) containing correction, an expected airspeed vg(t), an expected airspeed vg'(t) containing correction, elevator control command delta Z(t), an engine chock valve command delta(t) and so on to realize control procedures in the control circuits and achieve the aim of automatic landing leveling control. Meanwhile, remote control operating personnel can operate an operating lever of an elevator and an operating lever of a chock valve in a leveling process according practical situation and carry out correction control of automatic leveling, thereby effectively improves the anti-interference capacity and landing precision of an airplane.

The invention provides a remote control processing method, a remote control processing device and a remote control processing system. The method comprises the following steps that the mobile terminal acquires the address of a set-top box which cannot be directly communicated with the mobile terminal; the mobile terminal transmits control information for controlling the set-top box to a push server, wherein the control information includes an address; the push server forwards the control information to the set-top box according to the address; and the set-top box executes control processing according to the forwarded control information. Through the method, the problem that the set-top box cannot be controlled through the mobile terminal under the situation that the mobile terminal cannot be directly communicated with the set-top box in relevant techniques is solved, and the effect of controlling the set-top box through the mobile terminal under the situation that the mobile terminal cannot be directly communicated with the set-top box is further achieved.

An adaptive model prediction control algorithm for improving steering and braking cooperative control is characterized in that a reference model, a tire data processor, an MPC controller, a braking force distribution module and a CarSim automobile model are adopted in the method; the reference model is used for determining the expected automobile yaw velocity and the expected side slip angle; thetire data processor is used for determining the slip angle, the lateral force and the lateral force gradient of each tire; the CarSim automobile model is used for outputting actual motion state information of an automobile, wherein the actual motion state information comprises the automobile longitudinal velocity, the yaw velocity, the side slip angle and the road adhesion coefficient; the MPC controller obtains the front wheel turning angle and the compensation yawing moment of the automobile through optimization solution according to the expected automobile yaw velocity, the expected side slip angle and the actual motion state information of the automobile; and the front wheel turning angle is directly output to the CarSim automobile model, the compensation yawing moment is output to thebraking force distribution module, the braking moment of four wheels is determined through the braking force distribution module and output to the CarSim automobile model, and stability control is achieved.

The invention discloses a method for calculating, displaying and storing radiation dosages of CT image formation. The method comprises the steps of, in CT scanning, calculating the average radiation dosage received by each tissue and each organ in the CT scanning, calculating the distribution of obtained radiation dosages, and uploading relevant information to a storage server; simultaneously displaying historical accumulated radiation dosages of relevant tissues and organs of the scanning according to all radiation dosage data, stored in the storage server, of a patient. The method uses tissues and organs as units, uses historical data, can monitor accumulated radiation dosages received by a specific organ of the patient, reminds the patient of targeted body examination after a threshold is surpassed, and reminds a doctor of proper adjustment of CT scanning parameters, so that the purpose of controlling accumulated radiation dosages of tissues and organs is further achieved.

The invention discloses a method for suppressing the limit cycle of an inclination angle control system of an aircraft with parameter uncertainty. The method comprises the following main steps of: step 1, analyzing and establishing a model of the inclination angle system of the aircraft; step 2, analyzing scanning functions of a non-linear section and an oscillation phenomenon of the limit cycle; step 3, designing a controller of the inclination angle system of the aircraft with the parameter uncertainty; step 4, inspecting the performance of the controller; and step 5, ending the design. With the adoption of the method, not only is the oscillation of the limit cycle of the aircraft suppressed, but also the parameter uncertainty is overcome, and furthermore, the rapid and precise tracking to the inclination angle of the aircraft is realized. The method has better practical value and good application prospect in the technical field of automatic control.

The invention discloses a network control device, as well as an intelligent household system and a control method of the system. The network control device comprises a first wireless transmission module, a second wireless transmission module and a processor, wherein the first wireless transmission module is arranged on a networking board and used for adopting a first wireless communication protocol to carry out wireless communication; the second wireless transmission module is arranged on a master control board and used for adopting a second wireless communication protocol to carry out wireless communication; the processor is arranged on the master control board and used for converting a second wireless signal transmitted by the second wireless communication protocol to a first wireless signal transmitted by the first wireless communication protocol after receiving the second wireless signal, or converting a first wireless signal transmitted by the first wireless communication protocol to a second wireless signal transmitted by the second wireless communication protocol after receiving the first wireless signal. Through the device, the system and the method, the problem that intelligent household equipment cannot be controlled due to different communication protocols is solved, and the effect of controlling the intelligent household equipment is realized.

The invention discloses a braking force distribution method of an electromobile, and belongs to the field of electromobiles. In order to solve the problems that when the electromobile brakes on a pavement of a low attachment coefficient, a motor is controlled to reduce energy recovery, the control complexity is increased, and the safety of the electromobile is reduced, the method is provided. Themethod comprises the following steps that according to braking intensity, the brake force of front and back wheels is distributed; the brake intensity, battery SOC and the total demand brake force aretaken as input, and the proportion of regenerated braking force to front-wheel braking force is output through a fuzzy controller; the regenerated braking force is subtracted from the front-wheel braking force, and friction braking force born by front wheels is obtained; a slip rate threshold value is set, the actual slip rate is taken as input, through backstepping control, the proportion of theregenerated braking force is reduced, and when the actual slip rate exceeds a required slip rate, the braking quota distributed to a driving motor is reduced through backstepping control; according to the method, on the pavement of the low attachment coefficient, energy recovery can be provided as much as possible, and the safety of the electromobile can be kept.

The invention discloses a steady visual induction paradigm design and identification method for introducing a continuous action of an object. During paradigm design, one continuous action of the object is introduced, the continuous action of the object is disintegrated into a plurality of pictures, continuous black and white flashing is performed according to a time sequence, dynamic picture flashing units are formed, the dynamic picture flashing units are displayed on a computer to stimulate a user to generate a steady visual induction potential, a brain wave signal of the user staring at a certain flashing unit is collected and transmitted to the computer for processing, a canonical correlation analysis algorithm based on personal characteristic correction is adopted to perform target identification, the result is fed back to the user, the object is controlled to complete a corresponding action at the same time, and then target identification is performed for the next time. Through the method, corresponding steady visual induction paradigms can be designed according to different application objects, the control effect of "what you see is what you obtain" is achieved, the difference between user individuals is relieved, the correct rate of identification is increased, and the method can be widely applied to all types of brain-computer interface systems based on steady visual induction paradigms.

The invention discloses a method for improving the permeability of a coal seam through coal mine downhole slotting pressure-maintaining guide fracturing. The method is suitable for permeability improving operation of the low-permeability coal seam. The method for improving the permeability through guide fracturing is characterized in that guide holes are also formed while fracturing holes are formed, and appropriate slotting parameters are designed according to the coal seam stratum condition; the fracturing holes and guide holes are slotted; and then certain water pressure of the guide holesis kept, and the fracturing holes are fractured hydraulically. Compared with a common hydraulic fracturing method, the method for improving the permeability through guide fracturing has the advantagesthat fracture propagation can be effectively guided and controlled, the hydraulic fracturing blank zone is reduced, and the fracturing range of the fracturing holes is increased; and meanwhile, through the method, a local pressure relief area can be generated in a coal mass, the fracture initiation pressure of hydraulic fracturing is effectively reduced, the defect that a top plate and a bottom plate are damaged and consequently secondary disasters occur and other defects are overcome, the fracture morphology is strengthened, and finally the purposes of improving the fracturing effect and extracting gas efficiently are achieved.

The invention discloses a second order sliding mode control method for an autonomous vehicle based on visual dynamics, and belongs to the field of intelligent vehicles. The method includes the steps that firstly, a two-freedom vehicle lateral dynamic model and a visual dynamic model are established and combined, and a curvature of rho of a desired path on a preview point is taken as the input of external disturbance, and a vehicle dynamic model is reconstituted; and according to an actual offset distance of y<L> between a front viewpoint of vehicle heading and the desired path and an actual tangential angle of epsilon<L> between the vehicle heading and the desired path, a control law of a first order sliding mode controller is designed; based on the control law of the first order sliding mode controller, by reconstructing a sliding mode variable of s, a value range of weighting coefficients of lambada and alpha in a control law u<s> of a second order sliding mode controller of super-twisting is obtained; the value range of weighting coefficients of lambada and alpha is applied to the control law u<s> of the second order sliding mode controller to achieve automatic driving of vehicles. According to the second order sliding mode control method for the autonomous vehicle based on the visual dynamics, a series of problems such as nonsequence of traditional sliding mode control andchattering in a nonlinear system control theory are solved, and strong robustness is achieved.

The present invention discloses an ornamental colorful rice planting method. The method comprises: step 1, selecting seeds, and accelerating germination; step 2, performing seedling; step 3, performing paddy field processing; step 4, planting: planting rice seedlings of purple leaf rice, gold rice and purple panicle in different pattern regions separately according to the design requirements, forming required patterns, planting the rice seedling into matrix shape according to line and column, planting a line cress following every three lines of rice seedlings; and step 5, field management: according to the water level of the paddy field, performing immediate irrigation, fertilizing a compound fertilizer (100 kg per mu) in a month and three months after step 4 after one month and three months separately. According to the planting method disclosed by the present invention, the planted colorful rice has wonderful color and high ornamental value. Meanwhile, the implement amount of waste materials is reduced, but the plant height and harvest yield can be ensured and the costs are reduced.

The invention discloses a swing suppression control method for a double-pendulum tower crane with a distributed mass load. The method comprises the following steps of establishing a mathematical model of the double-pendulum tower crane with the distributed mass load based on a Lagrange kinetic equation and analyzing characteristics; establishing an energy function of the mathematical model of the double-pendulum tower crane according to the characteristics, and establishing an adaptive controller based on the energy function of the mathematical model of the double-pendulum tower crane to suppress external interference; and establishing a fuzzy controller based on a fuzzy control rule, adding the fuzzy controller into the adaptive controller, and regulating and controlling the swing suppression of the double-pendulum tower crane in real time through the fuzzy controller. According to the method, the coupling between the driving mechanism and the non-driving mechanism of the double-pendulum tower crane can be partially enhanced, the fuzzy controller module is provided to improve the real-time operation capability, the external disturbance is effectively inhibited by designing the adaptive controller, and the two are combined to realize efficient trajectory tracking and swing suppression so as to achieve a control effect.

A four-wheel steering vehicle stability control method based on time-varying dynamics model is characterized in that the method comprises a reference model, a tire data processor, an MPC controller and a CarSim vehicle model; The reference model is used to determine the desired yaw rate and the center-of-mass sideslip angle of the vehicle. The tire data processor is used for determining the side angle, side force and side force gradient of the tire. The CarSim automobile model is used to output the information of the actual moving state of the automobile, including the longitudinal velocity, yaw angular velocity, center-of-mass deflection angle and road adhesion coefficient. The MPC controller optimizes the rear wheel rotation angle of the vehicle according to the expected yaw rate, the center-of-mass deflection angle and the actual motion state information of the vehicle, and outputs the result to the CarSim vehicle model to control the vehicle to realize the stability control.

The invention relates to the field of continuous casting function refractory materials and provides a ladle slag feather edge brick of a waste submersed nozzle slag line sludge material. The waste submersed nozzle slag line sludge material is mainly derived from a submersed nozzle used in a continuous casting workshop, a submersed nozzle slag line part mainly has the component of zirconium oxide,and the zirconium oxide used at the submersed nozzle is stabilized and has the advantages of being high in melting point, good in corrosion resistance, excellent in chemical stability, oxidation resistance and thermal shock stability, high in high temperature strength, very good in slag abrasion resistance, peeling resistance and molten steel impact resistance, and the like. Due to adoption of thewaste submersed nozzle slag line sludge material in the ladle slag feather edge brick, the slag abrasion resistance and the peeling resistance of the slag feather edge brick can be greatly improved,the service life of a ladle can be prolonged, the consumption of a ton steel refractory material can be reduced, pollution of the refectory material upon molten steel can be reduced, the wastes can beturned into wealth, the treatment expense of waste refractory materials can be reduced, and the environment pollution caused by the refectory materials and land occupation pressure can be reduced.

The invention provides a remote control device for a wireless visual camera. Corresponding instructions are input at an input unit and processed by a main control processor, and then the control instructions are transmitted through a main control wireless communication unit; a controlled wireless communication unit receives signals transmitted by the main control wireless communication unit, the signals are processed through a controlled processor, the control instructions are converted into camera instructions capable of being identified by a digital camera through a conversion unit, the camera instructions are transmitted to an output unit, and the output unit is connected with a universal serial bus (USB) interface of the digital camera, so that the effects of setting the parameters of the digital camera and controlling the digital camera at the handheld visual device are achieved.

The invention discloses a device applied to anesthesia depth monitoring and anesthetic injection and relates to the technical field of medical equipment. The device specifically comprises an operating table, a monitor, an arc-shaped plate and a moving frame, wherein guiding grooves are formed in bottoms of the two sides of the operating table, rollers are in rolling connection with interior of the guiding grooves, single ends, far away from the guiding grooves, of the rollers are fixedly connected with the end face of the moving frame, and shifting chutes are formed in bottoms of internal walls of the moving frame. Through arranging the monitor, an injection unit and a motor B, the effect of accurately controlling an anesthetic injection amount is achieved, and the problem that anesthetic injection is hardly controlled relatively accurately due to the fact that anesthetic injection for a human body is achieved through manually operating an anesthetic injection unit, the amount of an anesthetic is difficult to control due to injection by this method, the anesthetic stresses of different people are different, the amount of the anesthetic is required to be adjusted through uninterruptedly observing an anesthesia depth monitor, and the error range of manual regulation on the amount of the anesthetic is relatively large is solved.

The invention discloses a holder servo system of a vehicle-mounted camera and a control method thereof. The servo system comprises a camera three-axis holder and a servo control device. The camera three-axis holder consists of a pitching motor, a side-tipping motor, a yawing motor, a side-tipping arm (1), a pitching arm (4), a yawing arm (5), a holder top seat (7), a camera (11), a pitching shaftbearing (12) and a balancing weight (13). The pitching motor includes a pitching motor stator (2) and a pitching motor rotor (3). The yawing motor includes a yawing motor stator (6) and a yawing motorrotor (8). The side-tipping motor consists of a side-tipping motor stator (9) and a side-tipping motor rotor (10). The servo control device comprises an inertia measurement unit, a three-dimensionalmodeling control unit, an angular velocity loop control unit and an angular displacement loop control unit. Therefore, the dynamic performance and the anti-interference performance of real-time control of the camera three-axis holder servo system are improved and the safety of unmanned vehicles is guaranteed.