Measurement by gyroscopic system
First Claim
1. A measurement method by a gyroscopic system comprising at least:
- a vibrating gyroscope, as a first means of angle measurement, designed to change its vibration position among a plurality of vibration positions and to provide a first measurement of angle values according to a measurement axis in one of the vibration positions of said plurality of vibration positions, said first means of measurement having a first zero reference as angle value; and
a second means of angle measurement, designed to provide a second measurement of angle values according to said measurement axis, said second measurement having a second zero reference as angle value;
said measurement method comprising the following steps to implement a change in vibration position of the first angle measurement means;
(a) in a first period of time, simultaneously providing first angle values through the first angle measurement means vibrating in a current vibration position from the plurality of vibration positions and second angle values through the second angle measurement means, and deducing from these corrected second angle values by adapting the second zero reference on the basis of a comparison of the first and second angle values obtained in said first period of time;
(b) in a second period of time, changing the vibration position of the first angle measurement means from the current position to another vibration position from said plurality of vibration positions;
(c) in a third period of time, simultaneously providing first angle values through the first angle measurement means and second angle values through the second angle measurement means, and deducing from these corrected first angle values by adapting the first zero reference on the basis of a comparison of the first and second angle values obtained in said third period of time.
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Accused Products
Abstract
A gyroscopic system is disclosed comprising at least a vibrating gyroscope, a first means of angle measurement, designed to provide a first measurement of angle values according to a measurement axis; and—a second means of angle measurement, designed to provide a second measurement of angle values according to said measurement axis. First angle values through the first angle measurement means vibrating in a current vibration position and second angle values through the second angle measurement means are provided simultaneously; and from these second angle values corrected on the basis of a comparison of the first and second angle values are deduced. Then the vibration position of the first angle measurement means is changed from the current position to another vibration position. First angle values through the first angle measurement means and second angle values through the second angle measurement means are then provided simultaneously; and from these first angle values corrected on the basis of a comparison of the first and second angle values are deduced.
16 Citations
19 Claims
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1. A measurement method by a gyroscopic system comprising at least:
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a vibrating gyroscope, as a first means of angle measurement, designed to change its vibration position among a plurality of vibration positions and to provide a first measurement of angle values according to a measurement axis in one of the vibration positions of said plurality of vibration positions, said first means of measurement having a first zero reference as angle value; and a second means of angle measurement, designed to provide a second measurement of angle values according to said measurement axis, said second measurement having a second zero reference as angle value; said measurement method comprising the following steps to implement a change in vibration position of the first angle measurement means; (a) in a first period of time, simultaneously providing first angle values through the first angle measurement means vibrating in a current vibration position from the plurality of vibration positions and second angle values through the second angle measurement means, and deducing from these corrected second angle values by adapting the second zero reference on the basis of a comparison of the first and second angle values obtained in said first period of time; (b) in a second period of time, changing the vibration position of the first angle measurement means from the current position to another vibration position from said plurality of vibration positions; (c) in a third period of time, simultaneously providing first angle values through the first angle measurement means and second angle values through the second angle measurement means, and deducing from these corrected first angle values by adapting the first zero reference on the basis of a comparison of the first and second angle values obtained in said third period of time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A gyroscopic measurement system comprising at least:
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a vibrating gyroscope, as a first means of angle measurement, designed to change its vibration position among a plurality of vibration positions and to provide a first measurement of angle values according to a measurement axis in one of the vibration positions of said plurality of vibration positions, said first means of measurement having a first zero reference and providing first values; and a second means of angle measurement, designed to provide a second measurement of angle values according to said measurement axis, said second measurement having a second zero reference as angle value and providing second values; said gyroscopic system furthermore comprising; a unit for correcting the second angle values, designed to provide corrected second angle values by adapting the second zero reference on the basis of a comparison of the first and second angle values obtained in a period of time; a unit for correcting the first angle values, designed to provide corrected first angle values by adapting the first zero reference on the basis of a comparison of the first and second angle values obtained in another period of time; said units for correcting the first and second values being employed during a change in vibration position of at least the first means of angle measurement. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification