Corrigendum to “Force sensors for measuring microenvironmental forces during mesenchymal condensation” [Biomaterials 270 (2021) 120684]

The car weighting test system provides a good method to improve the comfort felt in car by passengers. It uses force sensors to measure the car load based on a optics-mechanical system that measure the displacement of an steel part which is proportional of the applied weight force.

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Nondestructive Detection of a Crack in a Triangular Cantilever Beam Based on Frequency Measurement

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.353-358.2285 ◽

2007 ◽

Vol 353-358 ◽

pp. 2285-2288

Author(s):

Fei Wang ◽

Xue Zeng Zhao

Keyword(s):

Cantilever Beam ◽

Natural Frequencies ◽

Frequency Measurement ◽

Crack Size ◽

Force Sensors ◽

Rotational Spring ◽

Cantilever Deflection ◽

Crack Location ◽

Small Force ◽

Point Of Intersection

Triangular cantilevers are usually used as small force sensors in the transverse direction. Analyzing the effect of a crack on transverse vibration of a triangular cantilever will be of value to users and designers of cantilever deflection force sensors. We present a method for prediction of location and size of a crack in a triangular cantilever beam based on measurement of the natural frequencies in this paper. The crack is modeled as a rotational spring. The beam is treated as two triangular beams connected by a rotational spring at the crack location. Formulae for representing the relation between natural frequencies and the crack details are presented. To detect crack details from experiment results, the plots of the crack stiffness versus its location for any three natural modes can be obtained through the relation equation, and the point of intersection of the three curves gives the crack location. The crack size is then calculated using the relation between its stiffness and size. An example to demonstrate the validity and accuracy of the method is presented.

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Estimation of Sideslip and Roll Angles of Electric Vehicles Using Lateral Tire Force Sensors Through RLS and Kalman Filter Approaches

IEEE Transactions on Industrial Electronics ◽

10.1109/tie.2012.2188874 ◽

2013 ◽

Vol 60 (3) ◽

pp. 988-1000 ◽

Cited By ~ 132

Author(s):

Kanghyun Nam ◽

Sehoon Oh ◽

Hiroshi Fujimoto ◽

Yoichi Hori

Keyword(s):

Kalman Filter ◽

Electric Vehicles ◽

Force Sensors ◽

Tire Force

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Research on PVDF Micro-Force Sensor

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.599-601.1135 ◽

2014 ◽

Vol 599-601 ◽

pp. 1135-1138

Author(s):

Chao Zhe Ma ◽

Jin Song Du ◽

Yi Yang Liu

Keyword(s):

Power Dissipation ◽

Polyvinylidene Fluoride ◽

High Sensitivity ◽

Force Sensor ◽

Calibration Method ◽

Pvdf Film ◽

Force Sensors ◽

Low Power Dissipation ◽

Micro Force Sensor ◽

Processing Circuit

At present, sub-micro-Newton (sub-μN) micro-force in micro-assembly and micro-manipulation is not able to be measured reliably. The piezoelectric micro-force sensors offer a lot of advantages for MEMS applications such as low power dissipation, high sensitivity, and easily integrated with piezoelectric micro-actuators. In spite of many advantages above, the research efforts are relatively limited compared to piezoresistive micro-force sensors. In this paper, Sensitive component is polyvinylidene fluoride (PVDF) and the research object is micro-force sensor based on PVDF film. Moreover, the model of micro-force and sensor’s output voltage is built up, signal processing circuit is designed, and a novel calibration method of micro-force sensor is designed to reliably measure force in the range of sub-μN. The experimental results show the PVDF sensor is designed in this paper with sub-μN resolution.

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