Operating method for a coriolis gyroscope and evaluation/adjustment electronic system and pulse modulator suitable therefor

Abstract

The invention relates to a method of operating a Cortex gyroscope (1), in which a digital readout signal is generated which indicates the instantaneous amplitude / frequency of the excitation / readout oscillations of a resonator (2) of the Cortex gyroscope (1). The resonator (2) has an energy signal input. The energy signal is conditioned based on the digital readout signal in such a way that the excitation / readout oscillations are assumed to have a specific amplitude / frequency. The energy signal (S3-S6) is generated from the quantized output signal (S1, S2) of the pulse modulator (37) which has as input a digital excitation / compensation signal (S15) derived from the digital readout signal (S9, S10). -S18).

Description

technical field [0001] The invention relates to a method of operating a Corian gyroscope, as well as evaluation / control electronics suitable for this purpose. Background technique [0002] Cortesian gyroscopes (also known as vibrating gyroscopes) are increasingly being used for navigation purposes. Coriolis gyroscopes have a system of masses that can be induced to oscillate. This oscillation is generally a superposition of multiple independent oscillations. These independent oscillations of the mass system are initially independent of each other, and each oscillation can be abstractly called a "resonator". The operation of the vibrating top requires at least two resonators: one of them (the first resonator) is artificially excited to oscillate, hereinafter referred to as "excited oscillation". The other resonator (second resonator) is excited to oscillate only when the vibrating top is moved / rotated. This is because in this case a Coriolis force occurs which connects the...

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Problems solved by technology

However, it has the disadvantage that the electronics of the evaluation / control electronics are very complex

Thus, in figure 2 The embodiment of the Cortesian gyroscope shown has to use a large number of digital / analog converters (for example, at the points marked by reference numerals 26, 27 and 28), and these components are expensive and require a lot of power

Also, it should be noted that digital / analog converters often require large supply voltages and are difficult to integrate with other electronic components, especially digital ones, thus limiting the miniaturization of the implementation

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