Method for adjusting the phase-locking loop of an electronic evaluation device and corresponding electronic evaluation device
First Claim
1. A method of balancing a phase-locked loop of an electronic analyzing device that analyzes an output signal of a sensor device representing a yaw rate signal, the electronic analyzing device including an oscillating mass that undergoes a deflection under an effect of an external yaw rate on the sensor device and the output signal, the electronic analyzing device including a control loop provided with a controller having an input and an output, the control loop being further provided with one of a modulator and mixer having an input provided with a first electrical connection to the output of the controller, the method comprising:
- interrupting the first electrical connection between the output of the controller and the input of the one of the modulator and the mixer; and
producing a second electrical connection between the output of the controller and the input of the one of the modulator and the mixer, an attenuating element being connected in between in the second electrical connection.
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Abstract
A method is described for balancing the phase-locked loop of an electronic analyzing device which analyzes the output signal of a sensor device, a yaw rate sensor in particular using the Coriolis effect having an oscillating mass which undergoes a deflection under the effect of an external yaw rate on the sensor device and the output signal representing a yaw rate signal, the electronic analyzing device having in addition to the phase-locked loop, a control loop, a quadrature control loop in particular, and the control loop is provided with a controller having an input and an output as well as with a modulator or mixer having an input which has a first electrical connection with the output of the controller. In order to reduce the percentage of sensor devices produced which, however, cannot be balanced the first electrical connection is interrupted between the output of the controller and the input of the mixer and a second electrical connection is produced between the output of the controller and the input of the mixer, the second electrical connection being made by connecting an attenuating element in between.
16 Citations
14 Claims
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1. A method of balancing a phase-locked loop of an electronic analyzing device that analyzes an output signal of a sensor device representing a yaw rate signal, the electronic analyzing device including an oscillating mass that undergoes a deflection under an effect of an external yaw rate on the sensor device and the output signal, the electronic analyzing device including a control loop provided with a controller having an input and an output, the control loop being further provided with one of a modulator and mixer having an input provided with a first electrical connection to the output of the controller, the method comprising:
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interrupting the first electrical connection between the output of the controller and the input of the one of the modulator and the mixer; and
producing a second electrical connection between the output of the controller and the input of the one of the modulator and the mixer, an attenuating element being connected in between in the second electrical connection. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
the sensor device includes a yaw rate sensor operating in accordance with the Coriolis effect.
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3. The method according to claim 1, wherein:
the control loop includes a quadrature control loop.
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4. The method according to claim 1, further comprising:
selecting an attenuation factor of the attenuating element to be less than 1, whereby a balancing sensitivity of the output of the controller is substantially increased compared to when the attenuation factor equals 1.
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5. The method according to claim 1, wherein:
the second electrical connection is made by connecting a summer in between.
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6. The method according to claim 1, wherein:
for balancing the phase-locked loop, the first electrical connection is produced in a first step and an output voltage of the controller is determined without an effect of the external yaw rate on the sensor device.
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7. The method according to claim 6, wherein:
for the balancing of the phase-locked loop, the second electrical connection is produced in a second step.
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8. The method according to claim 7, wherein:
the electronic analyzing device includes an output stage and is connected to signal ground during the second step.
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9. The method according to claim 8, further comprising:
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adjusting a voltage level of the output of the controller to a voltage level of the signal-ground during the second step; and
supplying a voltage to a summer of the control loop via a summer of the output stage, wherein;
the voltage supplied to the summer of the control loop is proportional to the voltage level of the output of the controller determined in the first step.
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10. The method according to claim 9, wherein:
the external yaw rate acts on the sensor device in a third step.
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11. The method according to claim 3, wherein:
the following applies to an output voltage of the controller under the effect of the external yaw rate;
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12. An electronic analyzing device for measuring an output signal of a sensor device representing a yaw rate signal, comprising:
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an oscillating mass that undergoes a deflection under an effect of an external yaw rate on the sensor device and the output signal;
a phase-locked loop; and
a control loop provided with;
a controller having an input and an output, one of a modulator and a mixer having an input, an attenuating element, and at least one of a summer and a coupling element. - View Dependent Claims (13, 14)
the sensor device includes a yaw rate sensor operating in accordance with the Coriolis effect.
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14. The electronic analyzing device according to claim 12, wherein:
the control loop includes a quadrature loop.
Specification