| 摘要 |
PROBLEM TO BE SOLVED: To provide an angular velocity detection element capable of reducing generation of noise and reducing decrease in detection accuracy, an angular velocity detection device, an electronic apparatus and a mobile body.SOLUTION: A gyro element 1 includes: a base part 21; vibration arms 22, 23 connected to the base part 21; drive piezoelectric elements 31, 32, 33, 34 disposed on the vibration arms 22, 23 and vibrating the arms in a flexural manner in a drive vibration mode with the same phases along an X axis and opposite phases along a Z axis; and detection piezoelectric elements 61, 62 mounted on the vibration arms 22, 23 and detecting an angular velocity around a detection axis. When the vibration arms 22, 23 are vibrated in a flexural manner in a drive vibration mode, the detection piezoelectric elements 61, 62 generate signals with opposite phases; and when an angular velocity ωy is added while the drive arms 22, 23 are vibrated in a flexural manner in the drive vibration mode, the detection piezoelectric elements 61, 62 generate signals with the same phase.SELECTED DRAWING: Figure 1 |
