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2839results about How to "Reliable control" patented technology

Fault-tolerant sliding-mode control method for near-space vehicle

The invention discloses a fault-tolerant sliding-mode control method for a near-space vehicle. According to the fault-tolerant sliding-mode control method for the near-space vehicle, for the situation that the order of the magnitude of external disturbance in a quick loop and slow loop system is greatly larger than the order of the magnitude of uncertain times of the system, the nonlinear disturbance observer technology is used for processing hybrid disturbance, and unknown hybrid disturbance is estimated by a disturbance observer through known system information; in order to solve the problem that saturation of the control surface of the near-space vehicle is limited, the upper bound of the deflection angle output of a steering engine is applied to design of a control law, it is guaranteed that the input is within a certain range, auxiliary variables are designed, the deflection angle output of the steering engine is automatically adjusted through the self-adaption law, and therefore the situation that when the upper bound of the deflection angle is too large, the output is too large is avoided; a compensator is established through a radial basis function neural network and is used for fault-tolerant compensation when the steering engine breaks down, and therefore the problem that the steering engine of the near-space vehicle breaks down is solved. By the adoption of the fault-tolerant sliding-mode control method for the near-space vehicle, under the conditions of system uncertainties, unknown external disturbance, limited input saturation and a fault of the steering engine, the near-space vehicle has good control performance.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Electric motor car differential steeling control method based on slip rate control

The invention provides an electric motor car differential steeling control method based on slip rate control. The method comprises the following steps of: (1) measuring the back wheel speed of the electric motor car, the actual output torque of a drive motor and the side speed of the car according to a wheel sped sensor; and (2) calculating the side speed and the heading angle peed of the electric motor car according to two freedom steering models, and then calculating the slip angles of four wheels, thereby calculating the rotational speed of the four wheels; and using a special arithmetic to realize the control on the electric differential steeling of a hub electric motor car. The electric motor car differential steeling control method based on slip rate control combines the calculation of torque distribution with the slip rate of the wheels to lead a designed electric differential steeling mechanism to have the effect of differential lock simultaneously when having the differential and also have the functions of reducing the speed and increasing the torque, thus greatly improving the running trafficability characteristic and the steering performance of the electric motor car, not only achieving the effect of a mechanical differential mechanism on the aspect of function, but also improving the transmission efficiency and reducing the complexity of a mechanical system.
Owner:CHONGQING UNIV

Lane keeping assistance equipment for automotive vehicles

A lane keeping assistance equipment is provided, for traveling while accurately following a lane marking, without any accompanying temporary stoppages or causing discomfort to the driver. The lane keeping assistance equipment 1 has a lane marking detecting means 2 for detecting lane marking locations LR, LL; a sideways distance detecting means 32 for detecting a distance R between an automotive vehicle and the lane marking locations LR, LL; a control means 3 for creating and setting a travel target point GP at a location separated from the lane marking location LR, LL and transmitting a signal to a response unit A for causing travel on the travel target point concerned; an intervening steering detecting means 31 for detecting an intervening steering act by the driver; and a measuring means 35 for measuring an elapsed time, wherein the control means 3 updates a distance amount Rgp in correspondence with changes in the above-mentioned distance R, during a time period T total, covering the continuation of the driver's intervening steering acts and the elapsing of a prescribed time T lap after the intervening steering acts end, and after the above-mentioned prescribed time T lap elapses, the control means 3 also causes the above-mentioned updated distance amount to become fixed.
Owner:SUBARU CORP

Operation and maintenance monitoring platform based on big power marketing data

An operation and maintenance monitoring platform based on power marketing big data, including a data acquisition layer, a data processing layer and a data usage layer. The platform monitors various computer equipment, network equipment, security products, application systems, IT equipment operating conditions and various online behaviors, conducts comprehensive and centralized management of various equipment, detects various abnormal situations in time, and quickly locates them All kinds of event failures are automatically formed as "work orders", and then assigned to relevant departments for processing to finally form a closed-loop process; to achieve integrated monitoring, comprehensive business coverage, intelligent monitoring, and visualized display. Through the present invention, the decision-making layer of the provincial electric power company can have a more transparent understanding of the overall situation of each grassroots unit, and the management can more effectively supervise and control the work of each grassroots unit, so that each branch company can find weak links faster and more accurately. Improve the quality supervision of business and service work, and technically help power marketing staff to comprehensively supervise and manage the entire marketing business.
Owner:ELECTRIC POWER RES INST STATE GRID JIANGXI ELECTRIC POWER CO +1

Intelligent building site worker management system

The invention discloses an intelligent building site worker management system. The intelligent building site worker management system comprises an intelligent terminal, wireless charging equipment used for charging the intelligent terminal, an identity identification system, a communication system and a monitoring platform, wherein the monitoring platform comprises a comprehensive government monitoring platform and an intelligent building site worker management platform which are mutually connected through the Internet, the identity identification system is arranged at the building site entrance and exit position, and data transmission between a service provider base station and the intelligent building site worker management platform is realized by the communication system through employing the NB-IoT communication technology. The system is advantaged in that the new-generation NB-IoT communication technology is employed, real-time positioning of building site workers is realized, theintegral building site worker distribution condition is displayed globally, moving tracks of one single or multiple workers can be queried, comprehensive monitoring, stronger control and higher efficiency are realized, and super-low power consumption, mass connection, high coverage and super-low cost are realized.
Owner:郭亚晋
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