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3186results about How to "Improve control efficiency" patented technology

Vehicle travelling control method and system

The invention discloses a vehicle travelling control method and system, and relates to the technical field of automatic control. Multiple road images at different angles in front of a vehicle are obtained in real time from cameras arranged on different positions of the vehicle, effective road images dead ahead the vehicle are obtained after processing of the images, lane line information is recognized from the road images dead ahead the vehicle, the deviation angle and the deviation distance between the current vehicle traveling direction and a required lane line are calculated, and the vehicle is further controlled to travel according to the deviation angle and the deviation distance. Complex formula calculations can be avoided, efficiency is improved, missed information can be obtained according to actual images, accuracy is further improved, the scheme is simple and efficient, the control is accurate and free of limiting of application scenes, images at multiple angles can be obtained conveniently under the complex conditions that many vehicles are on roads, parallel line travelling occurs frequently, the roads are not standard, the vehicle speed is high and the like, adaptability to multiple scenes is higher, and automatic control over the vehicles can be achieved better.
Owner:BEIJING UNION UNIVERSITY

Method and system for controlling air-conditioner

The invention discloses a method for controlling an air-conditioner. The method includes the steps that A, the operating mode of the air-conditioner is detected in real time; B, when the air-conditioner is in a refrigeration mode or in a dehumidification mode, the indoor environment temperature and the first indoor environment humidification of the air-conditioner are collected, and the operating time of the air-conditioner in the refrigeration mode or in the dehumidification mode is counted; C, when the operating time of the air-conditioner in the refrigeration mode or in the dehumidification mode reaches first preset time, whether the judging conditions that the first indoor environment humidification is larger than first preset humidification and the indoor environment temperature belongs to a first preset temperature interval can be met at the same time or not is judged, if yes, the step D is executed, and if not, the step A is executed; D, the operating maximum frequency of a compressor of the air-conditioner is set to be a first frequency, and the current operating frequency of the compressor of the air-conditioner is lowered according to the first frequency. The invention further discloses a system for controlling the air-conditioner. By means of the method and system for controlling the air-conditioner, the maximum operating frequency of the compressor of the air-conditioner is lowered, and condensation is prevented.
Owner:GD MIDEA AIR-CONDITIONING EQUIP CO LTD

Intelligent vehicle running control method and system

The invention discloses an intelligent vehicle running control method and system, and relates to the technical field of automatic control. The intelligent vehicle running control method comprises the steps of: obtaining multiple images of roads in front of a vehicle in different angles in real time by cameras arranged at different positions of the vehicle so as to obtain efficient images of the road in front of the vehicle; extracting lane line information and performing coordinate transformation on the lane line information and demarcating the information at a corresponding position of a road right information infusion coordinate system; obtaining road right information within a preset running range, judging the current road right state based on the road right information, and controlling the vehicle to run based on the road right condition and the lane line information. The intelligent vehicle running control method and system can avoid a multifarious formula algorithm, not only improves efficiency, but also can obtain missing information based on a practical image, further improves accuracy, gives overall consideration for various road right information, can judge a next running control way more exactly and more efficiently based on specific conditions, can leave out a process of a plenty of inefficient calculation, and improves the vehicle running efficiency and accuracy greatly.
Owner:BEIJING UNION UNIVERSITY

Axial eddy current damper based on spiral transmission method

The invention relates to a large axial eddy current damper manufactured through a spiral transmission method. The axial eddy current damper based on the spiral transmission method comprises a spiral pair transmission assembly and a rotary eddy current damping generator. The rotary eddy current damping generator comprises an upper disc and a lower disc which are consistent in size, are vertically parallel and are made of magneto-conductive materials, wherein a rotary disc which is parallel with the upper disc and is made of electricity-conductive materials or magneto-conductive materials is arranged between the upper disc and the lower disc, the rotary disc is installed on the spiral pair transmission assembly and rotates along with the spiral pair transmission assembly, a plurality of pairs of magnets are further arranged between the upper disc and the lower disc, and the opposite magnetic poles of an upper magnet and a lower magnet of each pair of magnets are opposite in polarity. According to the axial eddy current damper based on the spiral transmission method, axial movement of a controlled structure is converted into the rotary movement of an inner structure of the damper to be controlled through a spiral pair, the control efficiency is largely improved, and the ratio between the damping force of the axial eddy current damper and the self weight is improved to the level equal to that of a viscous fluid damper or higher level.
Owner:湖南省潇振工程科技有限公司

Method and device for realizing state machine

The invention discloses a method and a device for realizing a state machine. The main technical scheme of the method comprises the following steps of: determining the currently generated event and the current state of the state machine; searching a corresponding relationship between a predetermined state and a predetermined event with a response relationship and judging whether the response relationship exists between the currently generated event and the current state of the state machine or not; if the response relationship exists between the currently generated event and the current state of the state machine, determining a processing function identifier and a switched next state corresponding to the current state of the state machine and the currently generated event according to a processing function identifier and a switched next state corresponding to the predetermined state and the predetermined event with the response relationship, and controlling the state machine to jump tothe determined next state after a processing function corresponding to the determined processing function identifier is successfully executed; and if the response relationship does not exist between the currently generated event and the current state of the state machine, controlling the state machine to keep the current state. The state machine is realized by the technical scheme; state switching efficiency is improved; and easy maintenance is achieved.
Owner:RUIJIE NETWORKS CO LTD

Energy-storage type alternating current and direct current mixed micro-grid and control method thereof

The invention discloses an energy-storage type alternating current and direct current mixed micro-grid and a control method thereof. The energy-storage type alternating current and direct current mixed micro-grid comprises an alternating current micro-grid, a direct current micro-grid, a battery energy-storage system and an energy management system EMS, which are connected with an external grid control center. The control method of the energy-storage type alternating current and direct current mixed micro-grid comprises the following steps of initializing the EMS to acquire information data of the alternating current micro-grid, the direct current micro-grid and the battery energy-storage system; acquiring information data of an external public grid in real time; regulating and controlling the alternating current micro-grid, the direct current micro-grid and the battery energy-storage system according to the acquired data. The energy-storage type alternating current and direct current mixed micro-grid and the control method thereof have the advantages that the energy utilization efficiency can be improved, the size of a transformer can be reduced, networking and controlling are more flexible, the cost is reduced, and the power supply reliability of the whole system is improved.
Owner:惠州美亿瑞创电气设备有限公司

Cradle head control method based on mobile phone and built-in gravity sensor

The invention discloses a cradle head control method based on a mobile phone and a built-in gravity sensor. The cradle head control method comprises the following steps of: (1) establishing a three-dimensional coordinate system for the built-in gravity sensor of the mobile phone; (2) recording a current position of the mobile phone and a remote cradle head position, and establishing a corresponding relationship between the current position of the mobile phone and the remote cradle head position; (3) setting a sampling interval, and regularly sampling a parameter value of the built-in gravity sensor; (4) calculating changes (including horizontal and vertical angle offsets) of the current position of the mobile phone and a position of the mobile phone at a previous sampling time according to the sampling value; (5) inputting the horizontal and vertical angle offsets into a cradle head control command generating module; (6) executing an integration calculation on each input time positionparameter of the mobile phone by the cradle head control command generating module, and generating a remote cradle head control command according to a remote cradle head control protocol; and (7) inputting the remote cradle head control command into a control command output queue, and transmitting a control command to a remote cradle head control unit through a network according to a command transmission policy to realize the control. According to the cradle head control method disclosed by the invention, the mobile phone is simulated to be a remote cradle head, thus the mobile phone is controlled to realize the control of the remote cradle head.
Owner:HANGZHOU DIANZI UNIV

Piezoelectric and electromagnetic induction dual energy feedback type magneto-rheological vibration damper and control method thereof

The invention discloses a piezoelectric and electromagnetic induction dual energy feedback type magneto-rheological vibration damper which comprises a vibration damper body and a vibration damper controller. The vibration damper body comprises a cylinder barrel, a pressure supporting floating piston, a middle isolation floating piston, a piston rod, piezoelectric generation modules, a spring pressing plate, a force transfer spring, a spring clamping seat, a lower permanent magnet, a magnetic coil, an upper permanent magnet, a magnetism isolating plate, a piston, an excitation coil winding, an electromagnetic induction coil fixing rod and an electromagnetic induction coil. A control box is arranged on the outer wall of the cylinder barrel, the vibration damper controller is arranged inside the control box, and a rectifier, a storage battery charging circuit, a first controllable constant current source circuit and a second controllable constant current source circuit are further arranged inside the control box. The invention further discloses a control method of the piezoelectric and electromagnetic induction dual energy feedback type magneto-rheological vibration damper. The piezoelectric and electromagnetic induction dual energy feedback type magneto-rheological vibration damper has the piezoelectric and electromagnetic induction dual energy feedback function, can achieve not only a damping change function but also a rigidity change purpose, and has good vibration damping performance.
Owner:XIAN UNIV OF SCI & TECH

Autonomous underwater vehicle vertical plane under-actuated motion control method

InactiveCN101833338AAbility to learn adaptivelyConvenient online debuggingPosition/course control in three dimensionsGlobal planningVertical plane
The invention provides an autonomous underwater vehicle (AUV) vertical plane under-actuated motion control method, which comprises the steps that: (1) initialization setting is performed on the AUV; (2) a top-layer control computer transmits a mission and finishes the global planning; (3) a motion control computer receives the feedback information of a sensor, performs control calculation by using a self-adaptive neuro-fuzzy inference system-based auto-disturbance rejection controller, and outputs a control command, namely an elevator angle delta s of the stern; (4) a steering engine executes the control command, finishes the coordination control of AUV depth and pitch attitude, and realizes the motion control under the AUV vertical plane under-actuated constraint; and (5) whether the mission is finished is judged, if the mission is finished, the data is saved and the voyage is ended, and if the mission is not finished, the control command is continuously calculated by the motion control computer. The AUV vertical plane under-actuated motion control method is suitable for the under-actuated, strong-coupling and complex motion relationship of the AUV in the vertical plane motion process, and can realize precise motion control.
Owner:HARBIN ENG UNIV

Regional traffic signal control method based on arterial road coordination priority

The invention relates to a regional traffic signal control method based on arterial road coordination priority. The regional traffic signal control method based on the arterial road coordination priority solves the problem that in the prior art, a regional traffic control method is not suitable for a road traffic facility present situation of Chinese cities. The regional traffic signal control method based on the arterial road coordination priority comprises the following steps that an arterial road of a region is guaranteed, different phase position allocation schemes are respectively selected for road crossings in the region according to characteristics of the road crossings, arterial road and non-arterial-road crossings are sequentially conducted phase difference optimizing, starting time of phase position green lights of the road crossings are sequentially guaranteed, and traffic signal timing of the region is completed. The regional traffic signal control method based on the arterial road coordination priority has the advantages that optimizing of a complex regional traffic face control system is transformed to optimizing of a linear control system, complexity of regional traffic signal optimizing is reduced, the efficiency of regional traffic signal controlling is greatly improved, the arterial road of a big traffic flow in the region is considered in a key mode, and a primary and secondary distinction optimization order enables the whole regional traffic to obtain the optimal controlling effect.
Owner:ZHEJIANG SUPCON INFORMATION TECH CO LTD
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