Sensor simulator and satellite closed loop simulation system

A sensor and simulator technology, applied in the field of satellite simulation testing, can solve the problems of different data formats, lower simulation reliability, single function of sensor simulator, etc. Good scalability

Inactive Publication Date: 2015-05-06
TSINGHUA UNIV
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  • Abstract
  • Description
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Problems solved by technology

[0004] The existing sensor simulators have a single function. For different types of sensors, it is generally necessary to set up corresponding sensor simulators. For example, when a satellite flight control simulation system needs to use both star sensors and sun sensors, R&D personnel usually design star sensor simulators and sun sensor simulators, which not only increases the complexity of the simulation system, but also increases the research and development costs
[0005] In addition, the existing sensor simulators are generally connected to the satellite flight control simulation system through mathematical simulation. The main defect of this method is that the output of the sensor simulator is the numerical simulation of physical quantities, which is different from the physical parameters of the sensor. The output data format of the device in the actual satellite flight control system is different, which reduces the reliability of the simulation

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  • Sensor simulator and satellite closed loop simulation system

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Embodiment 1

[0024] An embodiment of the present invention provides a sensor simulator, including: a simulation server and a data interface converter; the simulation server performs mathematical simulation calculations on the sensors that need to be simulated, obtains the simulated measurement values ​​of the sensors, and converts the The analog measurement value is sent to the data interface converter; the data interface converter converts the data format of the received analog measurement value into the data format of the real measurement value, obtains the real format analog measurement value, and outputs the real Format analog measurement value; wherein, the real format analog measurement value is the data format output by the actual sensor physical device in the actual satellite control system.

[0025] The working principles of the simulation server and the data interface converter are introduced respectively as follows:

[0026] (1) Simulation server

[0027] The simulation server ...

Embodiment 2

[0037] In the existing actual satellite system, the data communication between the devices on the star is carried out through the CAN (Controller Area Network, controller area network) bus, that is to say, the data format of the sensor on the star is a data format type that conforms to the CAN protocol. , therefore, the data format output by the sensor simulator provided in this embodiment is described by taking the data format conforming to the CAN protocol as an example. However, it should be noted that the present invention is not limited thereto. When other data formats are used between devices on the star, for example: when a type A data format is used for communication, in the sensor simulator provided by the present invention, the output data format is also Corresponding changes can be made, and all situations that conform to this idea are within the protection scope of the present invention.

[0038] Specifically, the sensor simulator provided in this embodiment includ...

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Abstract

The invention provides a sensor simulator, which comprises a simulation server and a data interface converter. The sensor simulator can be simultaneously or separately taken as a sensor simulator for various sensors such as a star sensor simulator, a sun sensor simulator, an optic fiber gyroscope simulator, a magnetometer simulator and a GPS (Global Positioning System) simulator, so that the sensor simulator has the advantages of high generality and high expandability; and moreover, the formula of data output by the sensor simulator is the same as that of data output by a practical sensor physical device in a practical satellite control system, so that access to a satellite control closed loop simulation system is available and the simulation reliability can be enhanced effectively.

Description

technical field [0001] The invention belongs to the technical field of satellite simulation testing, in particular to a sensor simulator and a satellite closed-loop simulation system provided with the sensor simulator. Background technique [0002] As a key component in the satellite flight control system, the sensor is mainly used to measure the attitude data and orbit data of the satellite. For example, the star sensor is a high-precision space attitude measurement device with stars as the reference system and the starry sky as the working object. [0003] Because the development of the satellite flight control system is very complicated and costly, it is often necessary to simulate the satellite flight control system in the initial stage of the development of the satellite flight control system. In the satellite flight control simulation system, the simulation equipment for the sensor is called for the sensor simulator. [0004] The existing sensor simulators have a sing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B17/02
Inventor 项军华张育林王兆魁范丽杨雪榕党朝辉安梅岩蒋超
Owner TSINGHUA UNIV
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