Design Of Intelligent Testing System For Dynamically Tuned Gyroscope

As an inertial instrument, Dynamically Tuned Gyroscope (DTG) is widely used in aviation domain, submarine, underground exploration and so on. It is used to measure the angle between object and inertial space and it is an important measuring element of inertial navigation system. It has mature technology and acceptable costs. As the controller of the gyroscope, rebalance loop's performance decides the measuring accuracy and working range of the whole system.Gyroscope can not work normally without a high precision rebalance loop.However, restricted by production process level, the actual parameters of DTG are not in complete agreement with designed parameters, so the control parameters are not the same.The design of rebalance loop need professionals spend lots of time debugging one by one. It will restrict the producing of rebalance loop.And the parameters of DTG will change with time go on.We must change the control parameters to keep the measuring accuracy.So a design of DTG controller based on model identification is proposed in this paper. This system is based on the theoretical mathematical model of DTG and virtual instrument technology, which utilizes the Industrial Personal Computer (IPC) and Data Acquisition System (DAS). We get parameters of the model by using proper multi-sine stimulus signal, evaluate the result, carry out the simulation experiment to get the control parameters and realize the DTG controller according to the experiment results and do the test.In addition a parameter testing system is found. With program control of turntable and motor power, drift rate and scale factor can be measured automatically.