Study Of Dynamic Tuned Gyro With The Larger Angular Velocity And Its Application

At present, the machine-electronic inertial instrument still is the first selection. According to the present situation and development tempo of inertial instrument in our country, the machine-electronic inertial instrument will be the main production about 2010. The dynamically tuned gyro (DTG) has many advantages in precision, reliability, small-sized, long life and cost. So, from our country condition, we should pay sufficient attention to the its developing. In the dissertation, how to improve the performance of DTG is analyzed and studied. A lot of design, simulation and experiment have been done.The main research content are summarized as follows.1. The main feature of DTG with the larger angular velocity is studied as a whole. The key to the part of electronic is analyzed.2. The way of developing follow torque is studied. A new kind of structure style of torquer with simple structure and new working principle is presented and is contrasted with the typical torquer in their function overall.3. The principle of the distinctive torque rebalance is studied and the principle diagram is given. According to the strapdown inertial navigation system request, the torque rebalance loop and its decoupling control are designed, analyzed and simulated. Depending on the analysis of the DTG angular sensor function, principles and the DTG's request to angular sensor, the special request to the angular sensor orthogonality is studied.4. The generalized coordinate of DTG with error in technics is studied. Using ,the DTG motion analysis is done. The effect of flexure support to the DTG precision is studied, and the drift equation of DTG is give. Because of the limited rigidity in every direction of the flexure joint, the gyro drift must be existed. The simulation analysis for this drift is done.5. Various attitude algorithm for strap-down inertial navigation system are studied. Under the condition of coning movement, the contrast simulation of tow kind attitude algorithm is done. The calculation process of the strap-down inertial navigation system is studied. Depending on the error analysis of the strap-down inertial navigation system, the error equation of this system is given.The research in the dissertation shows that the DTG with the larger angularvelocity is not only with simple structure, but also its largest torquing rate can attain to 500 /s, it could fit the requirements of strap-down inertial navigation system completely. The DIG with the larger Angular velocity is a kind of mini inertial instrument that possessing of upper performance and is worthy to be studied ulteriorly.