Papers by Drew Vanderriet
loving wife, Alexi, for all the encouragement and support given to me during my research. Riaan... more loving wife, Alexi, for all the encouragement and support given to me during my research. Riaan Stopforth, for the constant assistance and feedback provided to me during the course of this research. Olaf Diegel, for the generous donation of the 3D printed hand parts. John Harris, for volunteering as a double transradial amputee to assist in the research and experimentation. Clive Leppens, for the fabrication and donation of the prosthetic socket used for experimentation. The various test subjects, for assisting in the research process. All other people from UKZN that have been involved in the project in some capacity, for there assistance and support.
Sensor Review, 2016
Purpose This paper aims to explore the electronic design of the Touch Hand: a low-cost electrical... more Purpose This paper aims to explore the electronic design of the Touch Hand: a low-cost electrically powered prosthetic hand. The hand is equipped with an array of sensors allowing for position control and haptic sensation. Pressure sensors are used on the fingertips to detect grip force. A temperature sensor placed in the fingertip is used to measure the contact temperature of objects. Investigations are made into the use of cantilever vibration sensors to detect surface texture and object slippage. The hand is capable of performing a lateral grip of 3.7 N, a power grip of 19.5 N and to passively hold a weight of up to 8 kg with a hook grip. The hand is also tested on an amputee and used to perform basic tasks. The amputee took 30 min to learn how to operate the hands basic gripping functions. Design/methodology/approach Problems of previous prosthetic hands were investigated, followed by ways to improve or have similar capabilities, yet keeping in mind to reduce the price. The hand...
2015 Pattern Recognition Association of South Africa and Robotics and Mechatronics International Conference (PRASA-RobMech), 2015
The control of the Touch Hand: a low-cost electrically powered prosthetic hand is explored in thi... more The control of the Touch Hand: a low-cost electrically powered prosthetic hand is explored in this paper. A novel Haptic User Interface is proposed and tested as a supplement for amputee-prosthetic EMG control. The performance of the prosthetic hand is tested through gripping tests. The hand is capable of performing a lateral grip of 3.7 N, a power grip of 19.5 N and to passively hold a weight of up to 8 kg with a hook grip. The hand is also tested on an amputee and used to perform basic tasks. The amputee took 30 min to learn how to operate the hands basic gripping functions.
The control of the Touch Hand: a low-cost electrically powered prosthetic hand is explored in thi... more The control of the Touch Hand: a low-cost electrically powered prosthetic hand is explored in this paper. A novel Haptic User Interface is proposed and tested as a supplement for amputee-prosthetic EMG control. The performance of the prosthetic hand is tested through gripping tests. The hand is capable of performing a lateral grip of 3.7 N, a power grip of 19.5 N and to passively hold a weight of up to 8 kg with a hook grip. The hand is also tested on an amputee and used to perform basic tasks. The amputee took 30 min to learn how to operate the hands basic gripping functions.
2013 Africon, 2013
ABSTRACT This paper looks at various existing upper limb prostheses both from the commercial and ... more ABSTRACT This paper looks at various existing upper limb prostheses both from the commercial and research area. It assesses what has been achieved in the commercial field as well as its shortcomings. State-of-the-art research on upper limb prosthetics is reviewed and the progress over the last decade is touched on briefly. The paper then considers haptic feedback and myoelectric control, two cutting-edge technological fields within the field of prosthetics. A comparison is made between current and past upper limb prostheses and improvements to these prostheses are discussed. Suggestions for future work are made to incorporate and develop haptic feedback and more advanced control algorithms to further improve the current prosthetics. Myoelectric control is identified as the most limiting factor to the progress of upper limb prosthetics.
People who have lost a leg have a diminished capacity to complete daily tasks. While prosthetic l... more People who have lost a leg have a diminished capacity to complete daily tasks. While prosthetic limbs are not a new field, adjustability of such limbs is proposed to increase the life span of the prosthesis. The increased life span of a prosthetic limb will greatly decrease the cost an amputee has to spend over the years on prosthetics; the need for a replacement will be less.
2013 6th Robotics and Mechatronics Conference (RobMech), 2013
2013 Africon, 2013
ABSTRACT This paper looks at various existing upper limb prostheses both from the commercial and ... more ABSTRACT This paper looks at various existing upper limb prostheses both from the commercial and research area. It assesses what has been achieved in the commercial field as well as its shortcomings. State-of-the-art research on upper limb prosthetics is reviewed and the progress over the last decade is touched on briefly. The paper then considers haptic feedback and myoelectric control, two cutting-edge technological fields within the field of prosthetics. A comparison is made between current and past upper limb prostheses and improvements to these prostheses are discussed. Suggestions for future work are made to incorporate and develop haptic feedback and more advanced control algorithms to further improve the current prosthetics. Myoelectric control is identified as the most limiting factor to the progress of upper limb prosthetics.
The design and manufacture of a low cost, modular prosthetic hand is discussed in detail in this ... more The design and manufacture of a low cost, modular prosthetic hand is discussed in detail in this chapter. A fully actuated hand was developed with individually actuated fingers. A wrist was designed and manufactured to allow for a single degree of freedom, which allows for the rotation of 180 degrees. An experimental upper arm was developed using a pair of air muscles mimicking the bicep and triceps. The hand was tested in terms
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Papers by Drew Vanderriet