This measurement device for measuring the angular velocity or acceleration of a two-wheel vehicle, is provided with a main detection unit which detects the three-axis angular velocity or three-axis acceleration, a support unit which can support the main detection unit on the body of the two-wheel vehicle, and a correction unit which cancels the lean of the body to the left and right in the main detection unit.

A high-strength stainless steel rotor and a method for preparing the same, are provided. The high-strength stainless steel rotor, including the following element components by mass percentage: C: 0.03-0.050%, Cr: 14.90-15.80%, Ni: 5.00-5.70%, Cu: 2.20-2.80%, (Nb+Ta): 0.35-0.44%, Mo: 0.45-0.54%, V: 0.06-0.10%, Si: 0.20-0.60%, Mn: 0.40-0.80%, P≤0.010%, S≤0.010%, O≤0.003%, and the balance of iron and inevitable impurities.

Disclosed are an electrically-driven gyroscope having a housing capable of alternate rotation and a control method thereof, which relate to the field of electrically-driven gyroscopes. The electrically-driven gyroscope includes a rotating housing, an internal rotator, a drive motor composed of an electrical port part and a rotating part, a drive circuit, and a battery. The internal rotator is mechanically connected to the rotating part of the drive motor, and they can coaxially rotate. The electrical port part of the motor, the drive circuit, and the battery are mutually electrically connected, and are all connected inside the rotating housing. The electrical port part and the rotating part of the drive motor rotate with respect to each other under an interaction force. The used drive motor may be an inner rotor motor, an outer rotor motor, or an axial motor Further, during use, the present disclosure does not need to rely on an external force-applying object or the aerodynamic force by means of the disclosed design manner and the alternate control method for the housing, thus realizing autonomous continuous rotation and maintaining an upright alternate rotation posture until the battery is depleted.

Disclosed are an electrically-driven gyroscope having a housing capable of alternate rotation and a control method thereof, which relate to the field of electrically-driven gyroscopes. The electrically-driven gyroscope includes a rotating housing, an internal rotator, a drive motor composed of an electrical port part and a rotating part, a drive circuit, and a battery. The internal rotator is mechanically connected to the rotating part of the drive motor, and they can coaxially rotate. The electrical port part of the motor, the drive circuit, and the battery are mutually electrically connected, and are all connected inside the rotating housing. The electrical port part and the rotating part of the drive motor rotate with respect to each other under an interaction force. The used drive motor may be an inner rotor motor, an outer rotor motor, or an axial motor Further, during use, the present disclosure does not need to rely on an external force-applying object or the aerodynamic force by means of the disclosed design manner and the alternate control method for the housing, thus realizing autonomous continuous rotation and maintaining an upright alternate rotation posture until the battery is depleted.

A gyro sensor apparatus includes a driving section that supplies a driving signal, which is for vibrating a sensing element of a vibration-type gyro sensor in a drive axis direction, to the sensing element, and a processing unit that receives a first vibration signal having an amplitude proportional to a driving vibration amplitude, which is an amplitude of vibration in the drive axis direction of the sensing element and a second vibration signal having an amplitude proportional to Coriolis force generated in the sensing element due to an angular velocity of the sensing element. The processing unit is configured to calculate a ratio of Coriolis force to the driving vibration amplitude based on the first vibration signal and the second vibration signal and output a result of the calculation as a result of detection of the angular velocity of the sensing element.

A rotor assembly for deployment within a momentum control device that enables near-zero revolutions per minute (RPM) sensing, and method for making same, are provided. The provided rotor assembly utilizes a magnet coupled to the rotor shaft and a stationary sensor element to detect magnetic flux from the magnet and derive reliable near zero RPM therefrom.

Embodiments of a spherical momentum control device are provided. In one embodiment, the spherical momentum control device includes a housing assembly bounding a cavity, a rotor support axle disposed within the cavity, and a spherical bearing interface formed between the rotor support axle and the housing assembly. The spherical bearing interface facilitates rotation of the rotor support axle within the cavity about three orthogonal axes transecting substantially at the cavity center point. A rotor is mounted to the rotor support axle (e.g., through precision bearings) for rotation about a spin axis. The spherical bearing interface can assume any form for facilitating rotation of the rotor support axle about the orthogonal axes including, for example, a low friction plane bearing interface. In one embodiment, the spherical bearing interface includes rolling element bearings embedded in the cavity walls or embedded in enlarged end caps forming part of the rotor support axle.

Embodiments of a spherical momentum control device are provided. In one embodiment, the spherical momentum control device includes a housing assembly bounding a cavity, a rotor support axle disposed within the cavity, and a spherical bearing interface formed between the rotor support axle and the housing assembly. The spherical bearing interface facilitates rotation of the rotor support axle within the cavity about three orthogonal axes transecting substantially at the cavity center point. A rotor is mounted to the rotor support axle (e.g., through precision bearings) for rotation about a spin axis. The spherical bearing interface can assume any form for facilitating rotation of the rotor support axle about the orthogonal axes including, for example, a low friction plane bearing interface. In one embodiment, the spherical bearing interface includes rolling element bearings embedded in the cavity walls or embedded in enlarged end caps forming part of the rotor support axle.

Before a pedestal is assembled, a sensitivity is inspected for each of sensors disposed in blocks respectively. In an inspection step, the blocks in which the sensors are disposed respectively are prepared. The blocks are fitted into main-axis groove portions of a main-axis tray, and the blocks are brought in contact with main-axis positioning surfaces of the main-axis groove portions to dispose the thickness direction of the main-axis tray and the main-axes of the sensors in parallel. The main-axis tray is arranged on a turntable such that a central axis of rotation of the turntable and the thickness direction of the main-axis tray are in parallel and that the central axis of rotation of the turntable and the main-axes of the sensors are in parallel. The turntable is made pivoting or swinging to inspect the sensitivities, in the main-axes, of the of sensors.

A position sensing system comprises a position sensor having an accelerometer and a gyroscope, an alarm, and a controller configured to receive data from the position sensor and activate the alarm according to alarm management instructions stored in a memory. In some embodiments, the alarm instructions include a snooze option to allow the user/patient to temporarily deactivate the alarm. The controller is communicably linked to a remote display device configured to display the orientation of the user's body part.