Patent ID: 9535084
Date: 2017-01-03
CPC Classifications: G01C,G01P

Claim:
1. A method for the precise measuring operation of a micro-mechanical rotation rate sensor, comprising at least one seismic mass, at least one drive device for driving the seismic mass in a primary mode (q 1 ) and at least four trimming electrode elements which are jointly associated directly or indirectly with the seismic mass, wherein in each case an electric trimming voltage (u 1 , u 2 , u 3 , u 4 ) is applied between each of these trimming electrode elements and the seismic mass, wherein the rotation rate sensor comprises a control arrangement to measure rotation rate, and wherein the control arrangement comprises a sigma-delta converter with which a controlled variable (y) representing the detected deflection of the seismic mass in its secondary mode (q wherein each of the electric trimming voltages (u