| 摘要 |
<p>Attitude sensors which comprise a casing, an inertia-damped pendulum torsionally linked to an inertia member, and a sensor for measuring the position of the inertia member relative to the casing, are limited in their performance by the dependence of spring rate on wheel torsional friction, eg in a vehicle turn, the inertia wheel may follow the inertia-damped pendulum faster than is desired. Performance of these sensors can be improved by using an attitude sensor which comprises a support, a gravity-responsive element and a further element, each element being movable relative to the support and the two elements are coupled such that relative movement of the gravity-responsive element and the support produces corresponding relative movement of the further element and the support, the coupling being such as to sense the difference between the actual relative positions of the two elements and a predetermined relative position of the two elements and in dependence on the difference to apply electrically-generated force pulses to the further element to reduce the difference.</p> |
