5 results about "Synchronous control" patented technology

A method for synchronizing control of a road test simulator and a road test simulator having four rollers (10, 20, 30, 40) and four asynchronous motors (12, 22, 32, 42). Each of the asynchronous motors is used to actuate one of the rollers. Each roller is associated with a speed/angle rotation. The synchronization control takes place electronically and in the manner of a ring structure.

The invention discloses an air and gas synchronous controller. The air and gas synchronous controller comprises a shell, an air inlet end, a push rod and an elastic piece, wherein the shell is hollow and is divided into an air inlet cavity and a movable cavity by a membrane, the air inlet end is located at one end of the shell, a gas pipeline is communicated with the air inlet cavity through the air inlet end, the push rod is located in the movable cavity, one end of the push rod is connected with the membrane, the other end of the push rod is connected with an opening and closing piece at an air outlet, and the elastic piece is located in the movable cavity and abuts against the membrane. Compared with an air and gas synchronous controller in the prior art, the air and gas synchronous controller has the advantages that the structure is simple, and cost is lower. Compared with other products in the market on the aspects of functions and effects, the air and gas synchronous controller has the advantages that the air outlet volume can be adjusted in real time, fuel gas can be fully burnt, and continuous manual control over the air outlet volume is not needed.

The invention discloses a VSG pre-synchronization control method based on virtual current. The method comprises the following steps: acquiring real-time voltage values of the output ends of a VSG and an HDG-MG; constructing a virtual resistor connecting the VSG and the HDG-MG, and setting impedance to calculate a virtual current value between the VSG and the HDG-MG; converting the virtual current value to obtain a d-axis current and a q-axis current; and the VSG pre-synchronization amplitude control quantity and the VSG pre-synchronization phase control quantity are calculated, and VSG pre-synchronization control based on the virtual current is completed. The invention further discloses a grid connection method comprising the VSG pre-synchronization control method based on the virtual current. Through the innovative control loop design, VSG pre-synchronization control and corresponding VSG grid connection are achieved, the method can guarantee stable system frequency change, the frequency stability of the VSG in the pre-synchronization process is improved, the reliability is higher, and the practicability is better.

The invention relates to a ground service maintenance simulation training system architecture, and belongs to the technical field of aviation machinery simulation training. The ground service maintenance simulation training system architecture base on components mainly consists of a configuration manager, an interface manager, a component manager and a scene manager set; the configuration manager reads the configuration data according to the configuration selected by the user and guides the component manager to load the required component; the interface manager reads interface description information of the components, verifies input data of each component and establishes required external connection; the component manager coordinates time synchronization among simulation components in the framework and controls a correct simulation operation process; and the scene manager loads the component scene content according to the interface description information of the simulation component, fuses and renders the virtual scene, and provides a human-computer interaction interface. The architecture has the following advantages that: only corresponding components need to be replaced or added for airplane upgrading and remodeling, and the problems that the system modification difficulty is large and the expansibility is poor are solved.