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15811results about How to "High control precision" patented technology

Walking aid exoskeleton rehabilitation robot

The invention discloses a walking aid exoskeleton rehabilitation robot in the technical field of rehabilitation engineering, which comprises a mobile auxiliary mechanism, a control mechanism and an exoskeleton prosthesis mechanism, wherein the mobile auxiliary mechanism is connected with the exoskeleton prosthesis mechanism, and the control mechanism is connected with the mobile auxiliary mechanism and the exoskeleton prosthesis mechanism respectively. The exoskeleton prosthesis mechanism has compact design structure and large rotation range of each joint, and can meet the requirement on actual motion of a human body. By adopting a servo motor to drive, the control precision is high, and the output torque is large; and the mobile auxiliary mechanism rotates under the driving of the servo motor, can freely move, and has higher climbing capacity and movement speed. The height of the mobile auxiliary mechanism is adjusted to be applied to people with different heights. When the patient undergoes gait rehabilitation training, the human gravity center is actively adjusted to accord with the characteristics that the human body is fluctuated along with alternative gait. The mobile auxiliary mechanism also can support the human body, prevent people from tumbling in walking, and guarantee the whole stability.
Owner:SHANGHAI JIAO TONG UNIV

Fuzzy-control-based internet of things intelligent irrigation and fertilization control method and system

The invention discloses a fuzzy-control-based internet of things intelligent irrigation and fertilization control method and system. The method comprises the first step of data collection and processing, wherein limiting values of the soil humidity, nutrients and pond water level and the irrigation and fertilization planning time are set and stored in a database according to the water demand regulation and a fertilization formula of crops, and collected soil temperature and humidity, soil nutrients, air temperature and humidity, air speed, rainfall, flow, pond water level and pipe network pressure data; the second step of intelligent control, wherein corresponding data are read from the database and an irrigation valve and a fertilization valve are intelligently controlled by the adoption of the fuzzy control algorithm and a water and fertilizer coupling mode, by comparing the current pond water level with the set limiting value of the pond water level, starting and stopping of a water pump are intelligently controlled, and the speed of the water pump is adjusted and controlled by a PID algorithm. The fuzzy-control-based internet of things intelligent irrigation and fertilization control method and system have the advantages of being good in performance, complete in function, high in expansibility, easy to operate and manage and the like, and intelligent management and control are achieved by the adoption of fuzzy control.
Owner:贵州省水利科学研究院 +1

Walk-aiding exoskeleton robot system and control method

InactiveCN101791255ACompact designMeet the actual sports requirementsWalking aidsArtificial legsHuman bodyExoskeleton robot
The invention relates to a walk-aiding exoskeleton robot system and a control method, which belong to the technical field of rehabilitation engineering. The system comprises a hanging support, a moving platform, joints, protecting sleeves, a sensor module, a signal acquisition module, a central processing module and a motion control module, wherein the hanging support is fixed on the moving platform, the joints are connected with the hanging support to form an exoskeleton robot, the sensor module, the signal acquisition module, the central processing module and the motion control module are sequentially connected, the sensor module is used for acquiring joint angles, the interacting force of the exoskeleton robot and the human being and the myoelectric signals of the muscles of the human body, the signal acquisition module carries out signal conditioning and digital-to-analog conversion, the central processing module carries out action generation and the reverse solution of motion, and transmits an action command to the motion control module, and the motion control module is connected with the exoskeleton robot and generates a pulse signal to control the coordinated motion of the exoskeleton robot. The invention realizes the synchronous motion of the exoskeleton robot and the human body and real-time active control.
Owner:SHANGHAI JIAO TONG UNIV

Enzyme-linked immune analysis method and fully-automatic enzyme-linked immune analyzer

The invention relates to an enzyme-linked immune analysis method and a fully-automatic enzyme-linked immune analyzer. The analyzer comprises a rack component, a washing component, a sample adding/reagent adding component, a heating and temperature control component, a fluid path system, an input and output device, an optical measurement component and a control system, wherein the rack component comprises a rack soleplate; a pillar is arranged on the rack soleplate; a lower fixed plate and an upper fixed plate are arranged on the pillar from bottom to top in sequence; a circular reaction plate is arranged between the lower fixed plate and the upper fixed plate; the circular reaction plate is connected with the upper fixed plate and the lower fixed plate through a central shaft; a first motor is fixedly arranged at the lower part of the lower fixed plate; and the first motor is used for driving the circular reaction plate to rotate through a first transmission mechanism. When in use, the enzyme-linked immune analysis method and the fully-automatic enzyme-linked immune analyzer can carry out the detection of corresponding projects without wasting reagent through only one sample; and detection reagents need not to be respectively contained in different reagent bottles, so that the operation is very convenient, and the operation error is not easily caused, thereby ensuring the accuracy of the detection results.
Owner:SHENZHEN YHLO BIOTECH

Variable-frequency air-conditioner control method and control device thereof

The invention discloses a variable-frequency air-conditioner control method. The method includes: acquiring room temperature and humidity; according to room temperature and humidity, calculating the difference between room temperature and set temperature and the measured values of temperature difference change rate and air-conditioning output capacity change rate as the input parameters of fuzzy control; respectively quantifying the temperature difference and the measured values of temperature difference change rate and air-conditioning output capacity change rate so as to acquire the converting values of the temperature difference, the temperature difference change rate and the air-conditioning output capacity change rate in the corresponding universe of discourse; according to the converting values of the temperature difference, the temperature difference change rate and the air-conditioning output capacity change rate, calculating and outputting compressor frequency by preset fuzzy control regulations. The invention with the characteristics of accurate control, quick response and small overshooting can satisfy the requirements of high control accuracy, excellent transition process and high comfort, which is conducive to reducing the tear and wear of the compressor and saving the energy. Correspondingly, the invention also discloses a variable-frequency air-conditioner control device thereof.
Owner:GUANGDONG CHIGO AIR CONDITIONING

Central air conditioner intelligent control system based on wireless sensor network and method

The invention discloses a central air conditioner intelligent control system based on a wireless sensor network and a method, and belongs to the technical field of central air conditioner control. The central air conditioner intelligent control system comprises an intelligent information management center, wireless communication devices, a central air conditioner information monitoring and control module, a room information monitoring and control module and the like. The invention adopts the method that the central air conditioner intelligent control system is used to monitor information, build a data base, calculate current load of the system, and realize advance, accurate and optimized control of a central air conditioner system by combining a short-term loading forecasting method based on similar dates and fuzzy control technology, as well as taking the temperature variation of supply/return chilled/cooling water of a central air conditioner as the manipulated variable. The central air conditioner intelligent control system has the characteristics of great communication capacity, guaranteed communication quality, powerful network functions, wide monitoring range and extensive control quantity of the central air conditioner system, optimized control, high control accuracy, good energy saving effect and the like, and can be widely used in energy-saving optimizing control of various buildings, and is particularly suitable for energy-saving optimizing control of central air conditioners of intelligent buildings.
Owner:CHONGQING UNIV

Pressure device

The invention discloses a pressure device comprises a pressure device, a cover board, an over-pressure outage switch and a trigger device; the cover board is installed on the pressure device; a pressure space is defined between the cover board and the pressure device; a penetrating through hole is formed in the cover board; the over-pressure outage switch is installed on the cover board and is positioned at the through hole; the trigger device is installed between the cover board and the over-pressure outage switch; the trigger device comprises a push rod and an elastic sealing member; the push rod is movably installed between the cover board and the over-pressure outage switch; a first end of the push rod is adapted to trigger the over-pressure outage switch so that the over-pressure outage switch is cut off; the elastic sealing member is installed at the through hole; the elastic sealing member is connected with a second end of the push rod; when the pressure in the pressure space reaches a preset pressure, the pressure in the pressure space is directly applied on the elastic sealing member to drive the push rod to move to trigger the over-pressure outage switch so that the over-pressure outage switch is cut off and the pressure device is powered off. According to the pressure device of the invention, the use safety of the pressure device is effectively guaranteed.
Owner:FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD

Control method of VAV (variable air volume) air-conditioning system

The invention provides a control scheme of a VAV (variable air volume) air-conditioning system. A neural network predictive control method is used for a tail end VAV-BOX and an air-conditioning unit, thus the hysteresis characteristic of a VAV system can be overcome, the control accuracy is improved, the resonance phenomena of an actuating mechanism can be greatly reduced, the energy-saving effect is improved by above 13%, and the control parameter tuning problem in the project is solved. A pressure independent cascade stage predictive control method is used for the tail end VAV-BOX, thus thecontrol accuracy can also be improved. The air-conditioning unit is provided with four control loops and can automatically select a static pressure control or total air volume control policy with adjustable setting static pressure by using an all-condition integrated control technology, thus the predictive control on a fan can be realized; the primary air volume of all the tail end VAV-BOXes can be detected and the air supply temperature can be adjusted according to the operation condition, thus the problem of too low temperature in partial air-conditioning area in the lowest fresh air operation is solved; the cascade stage predictive control method is adopted for a fresh air ratio control loop, thus the accurate control on the fresh air ratio can be realized and the energy-saving level can be further improved.
Owner:BEIJING UNIVERSITY OF CIVIL ENGINEERING AND ARCHITECTURE +1

DSP (Digital Signal Processor)-based quad-rotor unmanned aerial vehicle autonomous hover control system and method

The invention discloses a DSP (Digital Signal Processor)-based quad-rotor unmanned aerial vehicle autonomous hover control system and method. The control system is provided with four screw propellers and control units which are arranged on four airfoils respectively; and each control unit is that a master control unit is connected to a ground computer through a wireless network, and a receiver is connected with a signal conversion module and a manual / automatic switching chip in sequence, transmits a received signal transmitted by a remote controller into the manual / automatic switching chip through the signal conversion module, is also connected with the manual / automatic switching chip through the master control unit and is used for transmitting the received signal to the manual / automatic switching chip through the master control unit for controlling driving units to drive direct current brushless motors on the four screw propellers to work. According to the method, kalman filtering processing is performed on sonar data to obtain accurate height data and driver control. According to the system and the method, the autonomous flight capacity of a micro quad-rotor unmanned aerial vehicle and the adaptability to the environment can be effectively enhanced, and the autonomous flight control under indoor environments and outdoor environments can be finished.
Owner:TIANJIN UNIV
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