Concept of cost-effective power-assisted wheelchair: Human-in-the-loop subsystem

Vorobyov, Maxim; Galkin, Ilya

doi:10.1109/aieee.2017.8270559

Cited by 8 publications

(4 citation statements)

References 47 publications

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“…An example of human-machine-human interaction from the medical field is a smart wheelchair with an assisting function. The concept of such an assistingpowered wheelchair is described in [8][9][10]. An assisting-powered wheelchair consists of an electrical drive (which consists of electrical machine and battery and electrical machine interface converter), battery pack, battery charger, control system, sensors, wheelchair control interface and also some kind of feedback to the user (that can be represented as visual, audible signals and also as haptic signals).…”

Section: Human-machine and Machine-human Interactionmentioning

confidence: 99%

Further Improvement of Customized Vibration Generator for Machine–Human Feedbacks with the Help of Resonant Networks

2021

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Modern industrial, household and other equipment include sophisticated power mechanisms and complicated control solutions and require tighter human–machine–human interaction, forming the structures known as cyber–physical–human systems. Their significant parts are human–machine command links and machine–human feedbacks. Such systems are found in medicine, for example, in orthopedics, where they are important for operation and functional abilities of orthopedic devices—smart wheelchairs, verticalizers, prosthesis, rehabilitation units, etc. The mentioned feedbacks may be implemented based on the haptic perceptions that require vibration actuators. In orthopedics, such actuators can also be used for diagnostic purposes. This research brings forward the idea of the use of resonant operation of the driver of vibration actuator. The corresponding driver has been built and experimentally tested. It has been found that (1) the point of maximal current is actually defined by the resonant frequency, (2) change of the capacitance allows shifting of the point of maximal current output and (3) damping factors make the above-described effect less obvious. Further development of the proposed idea requires a comprehensive comparison of four-quadrant and two-quadrant schemes in this application and development of a real-time programmable capacitor pack consisting of several binary weighted capacitors and a commutating circuit, which is installable to these schemes.

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Section: Human-machine and Machine-human Interactionmentioning

confidence: 99%

Further Improvement of Customized Vibration Generator for Machine–Human Feedbacks with the Help of Resonant Networks

2021

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“…The main idea of the proposed concept is integration of the power electrical equipment (scalable electrical motor-generator, its electronic driver, battery, its balancing-management system and charger), control and measurement hardware (sensor networks, motion reference devices, machine-human feedbacks and decision-making unit), as well as information technologies in a single versatile and expandable hardware platform. The concept has been briefly described in [8], its control subsystem-in [9], electrical subsystem-in [10], but more details about its scalable motor-generator-in [11]. Below, this concept is described briefly in order to introduce the electrical/mechanical requirements of the charger.…”

Section: Concept Of a Cost-effective Adoptable Power-assist Wheelchairmentioning

confidence: 99%

“…The electrical parameters of the charger follow from those of the utilized batteries. General considerations on battery selection have been stated in [9], while more detailed analysis of battery configuration in the context of energy efficiency-in [12]. Below these considerations are repeated briefly.…”

Section: Electrical Parameters Of the Chargermentioning

confidence: 99%

Modular Self-Balancing Battery Charger Concept for Cost-Effective Power-Assist Wheelchairs

et al. 2019

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The paper deals with a power charger capable of quick simultaneous charging of several unevenly discharged batteries. The charger is designed for use in conjunction with a recently developed power-assist wheelchair composed of two armrest modules associated with wheels—each with its own motor, driver and battery. Uneven discharge of the batteries is very possible in this application. Taking into account the charging power and energy comparable with the most powerful household electrical devices, the refreshing of these batteries and integration of the entire power supply chain into the household grid become a topical and challenging task. Solving of this task requires a special charger that has several channels and can unevenly apply charging power to these channels. At the same time, the charger must not generate current harmonics or reactive power, must operate with good efficiency and satisfy size constraints. In the given research, a configuration of several interleaved isolated single-ended primary-inductor converters is studied. The synthesized mathematical model of the proposed charger provides data about its static and dynamic characteristics while its experimental investigation focuses on operation details (power losses, control features etc.). The obtained results prove that the proposed concept complies with the above-mentioned requirements and can be applied in the discussed application.

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“…This research is a part of a lager project and the goal is to develop a modular power wheelchair which can be modified during final assembly to match the needs of user [14]. The control and user interface development is considered in [15]. Here the relevant initial data is related to the drivepower performance of the wheelchair: speed, range, acceleration, climbing capability, charging time of the battery.…”

Section: Introductionmentioning

confidence: 99%

Archives of Electrical Engineering

Vitols,

Podgornovs

2020

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Cells of a prototype powered wheelchair can be designed in various connections to provide different supply voltages which has impact on the efficiency of other wheelchair drive elements. The impact of cell configuration and resulting battery voltage on overall efficiency of power elements have been studied to determine the optimal configuration and voltage of the pack. A brief description of a battery energy storage system was given, and main requirements and variables were introduced to reveal the flexibility of the battery design. The efficiency versus supply voltage plots of a drive converter and battery charger were presented and discussed to find the optimal battery voltage. The motor design was analyzed from the fill factor perspective. The calculated efficiency parameters of all drive power elements were used to discuss and select an optimal battery cell configuration.

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Concept of cost-effective power-assisted wheelchair: Human-in-the-loop subsystem

Cited by 8 publications

References 47 publications

Further Improvement of Customized Vibration Generator for Machine–Human Feedbacks with the Help of Resonant Networks

Further Improvement of Customized Vibration Generator for Machine–Human Feedbacks with the Help of Resonant Networks

Modular Self-Balancing Battery Charger Concept for Cost-Effective Power-Assist Wheelchairs

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