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2818results about How to "Improve response speed" patented technology

Trajectory tracking control method used for automatic driving robot of vehicle

InactiveCN102358287AGuarantee reliability test qualityImprove test safetyFuzzy control systemVehicle orientation
The invention discloses a trajectory tracking control method used for an automatic driving robot of a vehicle, which relates to electronic control technologies of vehicles. The desired trajectory of a vehicle is described in a data point mode to obtain the current position information of the vehicle; humanoid driving is carried out according to the current driving direction at the current vehicle position to preview a distance ahead; the position obtained by previewing is compared with the desired trajectory to determine the lateral position deviation, the angle deviation and the vehicle speed deviation of the coordinate position obtained by previewing relative to the desired trajectory; then, the vehicle direction is jointly controlled by a trajectory tracking and speed controller according to position deviation and direction deviation; and according to vehicle speed deviation, the control quantities of an accelerator pedal and a brake pedal are determined with a fuzzy control method. The trajectory tracking control method is suitable for controlling the trajectory tracking of any trajectory, various vehicle types and various working conditions, and an automatic driving robot performs the control. The trajectory tracking control method has high precision and good repeatability and has an important meaning for guaranteeing the quality of vehicle reliability experiments and improving experiment safety.
Owner:BEIHANG UNIV

Construction and operation method of container cloud platform system

The invention relates to a construction and operation method of a container cloud platform system. The construction and operation method comprises the following steps: (1) the system is constructed; (2) access shunting is carried out on a control instruction and a service instruction; (3) a container cluster scheduling module forwards an access request to a specific container, and the specific container carries out service processing on the access request, returns the access request to the container cluster scheduling module, and then returns a processing result to a caller; (4) a host containerization engine module containerizes a host, records and maintains an application operated in the current platform and an application operation example list, supports and processes the control instruction, forwards instruction information, and monitors and feeds back the state of an application operation example; (5) a general controller module processes the control instruction of a container cloud platform; (6) an application health management module monitors the application condition; and (7) a message bus carries out message communication of a cloud platform device. The construction and operation method provided by the invention is used for packaging and operating dependent terms of third party applications with a container as a unit for achieving isolated operation and avoiding mutual interference, and the system resources of the host are used more fully.
Owner:TIANJIN RICHSOFT ELECTRIC POWER INFORMATION TECH

Model prediction control method of voltage source type rectifier when network voltage is unbalanced

The invention belongs to the field of power converter control and relates to a model prediction control method of a voltage source type rectifier when a network voltage is unbalanced. The model prediction control method of the voltage source type rectifier when the network voltage is unbalanced comprises the steps of converting three-phase network voltage and a three-phase current into network voltage and a current which are under a two-phase static coordinate system through an abc / alpha beta coordinate, obtaining network positive sequence voltage and negative sequence voltage by carrying positive and negative sequence component separation of the network voltage under the two-phase static coordinate system, calculating reference values of active power, calculating current reference values of the rectifier under the two-phase static coordinate system, and carrying out model prediction current control and selecting an optimal on-off state. The model prediction control method of the voltage source type rectifier when the network voltage is unbalanced is capable of quickly and precisely tracing the current under the two-phase static coordinate and effectively eliminating fluctuation of direct current side voltage at the same time, power quality of the system is improved, a reliable network-connected operation of the rectifier when transient state network voltage is unbalance is achieved, and dynamics and stability of the whole system are improved.
Owner:TIANJIN UNIV

Distributed monitor system and method based on streaming media service cluster

InactiveCN103747060AStrong scalabilityImprove response speed and concurrencyTransmissionSQLWorkload
The invention provides a distributed monitor system and method based on streaming media service clusters. The system comprises a Hadoop-based data distributed processing framework, a distributed internal memory caching module Memcached, a relation data management module, a non-relation data management module, a streaming media service cluster module, and a load balancing module. The Hadoop-based data distributed processing framework extracts and analyzes data from a data source and performs preprocessing and distributed calculation on analyzed data. The distributed internal memory caching module Memcached caches commonly-used and temporary data in the internal memory of a server. The relation data management module achieves query, storage, management, and computation of information of an access device achieved by a monitoring system platform. The non-relation data management module achieves distributed disposition in combination with a fragment calculating method of a non-relation No-SQL data storage system. The streaming media service cluster module achieves distributed cluster processing of streaming media information transmission. The load balancing module performs balancing procession on the load of the monitoring system platform and expands WEB container level. In combination with a load balancing mechanism and database fragment calculation, the distributed monitor system improves a level expansion capability, decreases platform configuration and management workload, and maintains stability.
Owner:FORYOU GENERAL ELECTRONICS
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