| 摘要 |
<p>PURPOSE:To detect an angular velocity without generating an offset, by fitting two tuning forks to the same side surface of a rigid body, and constituting so that each vibration surface becomes a right angle to each other. CONSTITUTION:The turning fork 5a and the tuning fork 5b are fitted to a supporting member 4a and 4b so that their vibration surfaces become a right angle to each other. When an electric power source having constant frequency being near resonance frequency of the tuning fork 5a is connected to piezoelectric elements 2a, 2b, the tuning fork 5a starts its vibration. When a prism 1 is rotated around its long axis, the tuning fork 5b is resonated by amplitude being proportional to an angular velocity by force operation on the prism 1 and Coriolis' force, and voltage being proportional to the angular velocity is generated from piezoelectric elements 2c, 3d. The vibration surfaces of the tuning fork 5a and 5b are fitted so as to become a right angle to each other, therefore, the vibration modes are entirely different, and no resonance is generated, therefore, the tuning fork 5b is not vibrated by vibration of the tuning fork 5a, and no offset is generated.</p> |
