Accelerometer input axis angular acceleration sensitivity

Kau, S.; Boutelle, J. O.; Lawdermilt, L.

doi:10.1109/plans.2000.838338

Cited by 5 publications

(3 citation statements)

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“…In this way, we can obtain the position of an object in motion in space, which includes: three location coordinates in X, Y, Z and three rotation angles in pitch, yaw and roll. As compared to other sensing techniques that perform six DOF measurements, an IMU has the advantages of mobility and thus has been widely utilized in navigation systems for precise positioning [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

“…Most of the IMU systems consist of three gyroscopes and three linear accelerometers. And they acquire the orientation angles of an object in motion by one integral operation on the angular velocities, which are measurements from gyroscopes; the location information by two consecutive integral operations on the linear acceleration, which are measurements from linear accelerometers [1][2][3][4]. This approach is straightforward and can accurately acquire the six DOF movement parameters as long as the high precision inertial sensors are incorporated in the IMU.…”

Section: Introductionmentioning

confidence: 99%

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MEMS SoC: observer-based coplanar gyro-free inertial measurement unit

Chen

Park

2005

J. Micromech. Microeng.

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This paper presents a novel design of a coplanar gyro-free inertial measurement unit (IMU) that consists of seven to nine single-axis linear accelerometers, and it can be utilized to perform the six DOF measurements for an object in motion. Unlike other gyro-fee IMUs, this design uses redundant accelerometers and state estimation techniques to facilitate the in situ and mass fabrication for the employed accelerometers. The alignment error from positioning accelerometers onto a measurement unit and the fabrication cost of an IMU can greatly be reduced. The outputs of the proposed design are three linear accelerations and three angular velocities. As compared to other gyro-free IMUs, the proposed design uses less integral operation and thus improves its sensing resolution and drifting problem. The sensing resolution of a gyro-free IMU depends on the sensing resolution of the employed accelerometers as well as the size of the measurement unit. Simulation results indicate that the sensing resolution of the proposed design is 2 • s −1 for the angular velocity and 10 µg for the linear acceleration when nine single-axis accelerometers, each with 10 µg sensing resolution, are deployed on a 4 inch diameter disc. Also, thanks to the iterative EKF algorithm, the angle estimation error is within 10 −3 deg at 2 s.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

MEMS SoC: observer-based coplanar gyro-free inertial measurement unit

Chen

Park

2005

J. Micromech. Microeng.

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“…But low cost sensors are generally characterized by poor performances. The most important drawbacks of a MEMS IMU are bias and scale factor(Kau et al (2000);Hung et al (1989);Hyun et al (2009);…”

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confidence: 99%

A Biased Extended Kalman Filter for Indoor Localization of a Mobile Agent using Low-Cost IMU and UWB Wireless Sensor Network

Benini

Mancini

Marinelli

et al. 2012

IFAC Proceedings Volumes

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Pendulum Micromechanical Angular Accelerometer with Force Feedback

Fang

Wei

2007

2007 International Conference on Mechatronics and Automation

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This paper bring forward a kind of pendulum micromechanical angular accelerometer with force feedback, which might be proposed by us, first. The sensor adopts a pendulum with mass joined to the anchors by a pair torsionspring beams as sensing device, differential-capacitor device for detecting the angular acceleration about the X axis, an electrostatic force device for feedback loop. The sensor's structure and basic operating principle were discussed. The theoretical relation of angular acceleration and output of sensor was derived in detail based on the geometrical and dynamical models. The simulation result shows that the scale factor of sensor is s r V / / 3889 . 0 and verifies the accuracy of the theories model. It can be used in robust motor control of industrial robots and aerocraft.

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Accelerometer input axis angular acceleration sensitivity

Cited by 5 publications

References 0 publications

MEMS SoC: observer-based coplanar gyro-free inertial measurement unit

MEMS SoC: observer-based coplanar gyro-free inertial measurement unit

A Biased Extended Kalman Filter for Indoor Localization of a Mobile Agent using Low-Cost IMU and UWB Wireless Sensor Network

Pendulum Micromechanical Angular Accelerometer with Force Feedback

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