Closed-loop test system of liquid floated accelerometer and test method of test system
A technology of accelerometer and closed-loop testing, which is applied in speed/acceleration/shock measurement, testing/calibration of speed/acceleration/shock measuring equipment, measuring devices, etc., and can solve damage, inconsistency of torque adding equipment, and inconvenient simulation system modularization and standardized design to achieve the effect of improving accuracy and reducing construction costs
Active Publication Date: 2016-02-17
SHANGHAI XINYUE METER FACTORY
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Problems solved by technology
Compared with the on-orbit acceleration of the aircraft, the gravitational acceleration on the ground is much greater. In order to offset the influence of the gravitational acceleration, the simulation of the on-orbit acceleration of the measurement axis in the direction of the gravitational acceleration requires a large current to compensate, resulting in moment-adding devices and The torque-adding devices in the other two directions are inconsistent, which is not convenient for the modularization and standardized design of the simulation system, and does not meet the requirements of the interchangeability of the test system, and the long-term high-current torque-adding is likely to cause damage to the liquid-floating accelerometer self-test excitation winding Coil damage
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[0031] The embodiments of the present invention are described in detail below: the present embodiment is implemented under the premise of the technical solution of the present invention, and detailed implementation and specific operation process are provided, but the protection scope of the present invention is not limited to the following implementation example.
[0032] The present invention proposes a closed-loop testing system for a liquid buoyancy accelerometer such as figure 1 As shown, the test system includes the installation tooling of the liquid buoyancy accelerometer, the program-controlled current adding torque equipment, the dynamics simulator and the acquisition and control equipment. The installation tool divides the gravitational acceleration equally into the three measurement axes of the liquid accelerometer, and the dynamics simulator calculates the position, velocity and acceleration of the aircraft; Incentive; the on-board computer collects the measured va...
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The invention discloses a closed-loop test system of a liquid floated accelerometer. The system comprises an installation tool of the liquid floated accelerometer, a program control current distance adder and a dynamic simulator, wherein the installation tool of the liquid floated accelerometer distributes the gravitational acceleration on three measuring shafts equivalently, the dynamic simulator dynamically generates the acceleration under an inertia coordinate system of an aircraft, and converts the accelerometion into a liquid floated accelerometer measuring system, and the program control current distance adder applies an excitation current to a self-detection coil of the liquid floated accelerometer according to the relation between calibrated distance adding current and the acceleration, and compensate the components of the gravitational acceleration on the three measuring shafts simultaneously. A spaceborne computer collects the acceleration value output by the liquid floated accelerometer, solves the attitude and orbit control instruction, and outputs the instruction to a collection controller; the collection controller transmits the collected attitude and orbit control instruction to the dynamic simulator for solution in the next period; and thus, closed-loop test is formed.
Description
technical field [0001] The invention belongs to the technical field of ground simulation test and test of an aircraft attitude and orbit control system, in particular to a closed-loop test system and a test method for a liquid buoyancy accelerometer. Background technique [0002] Liquid pendulum accelerometer is one of the basic measurement components of aircraft inertial navigation and inertial guidance system. It is mainly used to measure the motion acceleration of aircraft, and obtain its velocity and position by integrating the acceleration. Acceleration simulation equipment is mainly simulated by centrifuges and shaking tables. The construction of centrifuges is complex and expensive, and it is difficult to be used for ground semi-physical simulation tests of attitude and orbit control systems. The three-axis acceleration of shaking tables is difficult to simulate the acceleration of on-orbit aircraft and cannot be used for Semi-physical simulation of attitude and orb...
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IPC IPC(8): G01P21/00G01C25/00
Inventor陈浩桑小冲程颢郭旭升卢翔
OwnerSHANGHAI XINYUE METER FACTORY