The Research And Design Of Three-phase Inverter For Gyroscope

Inertia technology is paid more and more attention to by people as an type of key technique influencing sea,land,air,outer space.Gyroscope is the core element of inertial navigation system,whose performance will influence the precision of the whole system directly.We plan to design three-phase inverter which power is constant as the excitation power of gyroscope in order to make gyroscope run safely and reliably.We hope to improve the precision of inertial navigation system by reducing the excursion of gyroscope.We summarize the study actuality of inverter in this paper as general.After that,we analyse detailedly the oretical foundation of inverter design.SPWM is the usual method of DC/AC.We discuss the advantage and disadvantage of each method of SPWM.We also make qualitative analysis of harmony waves of exporting sinusoidal waves.We give out the whole design plan of gyroscope power in the paper. We also analyse detailedly the design of switch circuit, the design of drive circuit, the design of filter circuit and the design of feedback circuit.We adopt the digital control system based DSP in order to improve the performance specifications of gyroscope power.We choose the symmetry regulation sample method as SPWM arithmetic. We also introduce the design flow of DSP system in the paper.