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Development of Sensitive Elements of Navigation Systems Using Advanced Computer Technologies

    

MEMS sensors (gyros and accelerometers) are extensively used in navigation devices. Sensor performance requirements are constantly increasing because their application areas extend characterized by ever increasing levels of external factors such as mechanical actions (vibrations and shocks) and temperature actions.

      International research laboratory Integrated Orientation and Navigation Systems conducts research in the following directions:

- developing the mathematical models of sensitive elements (SE) of MEMS gyros considering the effect of wide-range mechanical and thermal actions;

- developing the design methods of low-noise ASIC for motion control systems for MEMS sensor SEs;

- formulating the principles of designing SEs for multibody MEMS gyros (Fig. 1).

      The last direction is considered worldwide to be the most perspective method to improve MEMS sensor mechanical and thermal immunity.

      Within these directions, connected problems in mechanics (Fig. 2), thermodynamics (Fig. 3), systems engineering, etc are solved using advanced finite element analysis software. The obtained solutions allow formulation of requirements on designing multibody inertial MEMS sensors and can be applied to develop competitive precision navigation systems.

Fig. 1. Design of two-body MEMS gyro

(Fig. 1 is provided by candidate of technical sciences Daniel P. Eliseev)

Fig. 2. Finite element analysis of deformation of inertial bodies in MEMS gyro under acceleration

(Fig. 2  is provided by candidate of technical sciences Daniel P. Eliseev)

Fig. 3. Finite element analysis of thermal processes in the body of MEMS gyro.

(Fig. 3  is provided by candidate of technical sciences Daniel P. Eliseev)