Orthotic Robot as a Self Optimizing System

Wierciak, J.; Bagiński, Karol; Jasińska‐Choromańska, D.; Strojnowski, T.

doi:10.1007/978-3-319-02294-9_77

Cited by 5 publications

(2 citation statements)

References 11 publications

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“…The most typical as well as specific applications have been listed in [ 15 ]. The interesting fact is that the number of novel devices employing tilt measurements constantly increases, including, e.g., self-optimizing orthotic robots [ 16 ] or new generation of motorcycle anti-lock braking system (ABS) [ 17 ]. It seems that in some of these applications, the considered mechanical tilt sensors could be applied as successfully as MEMS devices.…”

Section: Introductionmentioning

confidence: 99%

Electric-Contact Tilt Sensors: A Review

Łuczak

Ekwińska

2021

Sensors

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A review of various kinds of solid tilts sensors, using a free mechanical member for generation of electric-contact (mostly a ball), is presented. Standard and original solutions are discussed. The latest patents are described. A classification of the existing solutions with respect to their sensing principle is proposed. Possible types of the electric/electronic circuits are discussed. Advantages of these sensors are emphasized: mainly optional operation without power supply, resistance to electrostatic discharges, and simplicity of signal processing. Technological details are briefly introduced, along with miniaturization prospects. Additionally, liquid tilt sensors are succinctly characterized. The most typical tilt sensing techniques are concisely compared.

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Section: Introductionmentioning

confidence: 99%

Electric-Contact Tilt Sensors: A Review

Łuczak

Ekwińska

2021

Sensors

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“…MEMS accelerometers are applied more and more often in many kinds of systems and devices, to directly sense constant or variable acceleration (including vibration) or tilt [1]; owing to appropriate signal processing (integration or differentiation) they also enable determination of velocity and position or jerk and jounce (shock). Due to their small dimensions they are the only solution possible in the case of devices having miniature size, like mobile microrobots [2] and PDAs (Personal Digital Assistant) such as cell phones, tablets, palmtops, photo cameras, smartwatches, or wearable devices like orthotic robots [3]. Over the recent years, even some scuba diving instruments have been equipped with MEMS accelerometers (enabling tilt compensation for the embedded electronic compass [4]), e.g.…”

Section: Introductionmentioning

confidence: 99%

Effects of Natural Aging in Biaxial MEMS Accelerometers

2021

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Effects of a fully natural aging of MEMS accelerometers are evaluated with regard to changes in their performance. Two models of commercial dual-axis accelerometers (two pieces of ADXL 202E and 203 by Analog Devices Inc.) with analog outputs were tested over a period of about 10 and 4 years, respectively. A custom computer controlled test rig was used for performing relevant experimental studies, employing the gravitational acceleration as the reference source. A methodology of determining the proposed indicators of aging phenomena is presented and discussed. Changes of the offset voltage and the scale factor were observed and a way of evaluating the overall error due to combined influence of these two parameters is proposed. It was found out that the changes of the output voltage generated by the tested accelerometers were considerable, resulting in respective maximal errors of about 52 mg (2.6%) (ADXL 202E) or 20 mg (1%) (ADXL 203). Simple ways of reducing the effects of aging are proposed.

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