Adjustment of resonator G-sensitivity by circuit means

Resonators with more than one electrode are described which allow for the flexible control of acceleration sensitivity using simple external circuit techniques. By varying the relative excitations of the electrodes, the mode shape, and hence the acceleration sensitivity of the resonator, called gamma (G), can be altered. These G tuning adjustments are external to the resonator; hence, they do not require the introduction of new resonator manufacturing processes or the modification of existing ones. Experimental results show that individual components of the G-sensitivity vector can be nulled, and the magnitude of the vector can be minimized. G-sensitivities as low as 1.5×10 ^-10/G and reductions by a factor of five are obtained. A qualitative theory is presented