DSP-Based Controller for a Multi-Degree Prosthetic Hand
نویسندگان
چکیده
The electromyographic (EMG) signal is used to discriminate eight hand motions: power grasp, hook grasp, wrist flexion, lateral pinch, flattened hand, centralized grip, three-jaw chuck and cylindrical grasp. From the analysis of the PC-based control system, a three-channel EMG signal is used to distinguish eight hand motions for the short below elbow amputee. Pattern recognition is used in this discriminative system. Three surface electrodes are placed on palmaris longus, entensor digitorum and flexor carpi ulnaris. Due to the complexity of the EMG signal and the portable consideration of the controller, a controller based on digital signal processor (DSP) is designed and implemented in this discriminative system. The DSP integrates the signal preprocessing module, the digital filter module and pattern recognition module into the controller. The on-line DSP controller can provide 87.5% correct rate for the discrimination of eight hand motions.
منابع مشابه
An Evolvable Hardware Chip and Its Application as a Multi-Function Prosthetic Hand Controller
This paper describes the application of genetic algorithms to the biomedical engineering problem of a multi-function myoelectric prosthetic hand controller. This is achieved by an innovative LSI chip (EHW chip), i.e., a VLSI implementation of Evolvable Hardware (EHW), which can adapt its own circuit structure to its environment autonomously and quickly by using genetic algorithms. Usually, a lo...
متن کاملDesign and Implementation of Discrete Time Observer Based Backstepping Controller for a 2DOF Servomechanism
The two degrees of freedom servomechanism has many applications, including in gimbaled seekers. These mechanisms require closed-loop control to perform properly. In this paper, an observer-based multi-input-multi-output hybrid controller is designed for a two-degree-of-freedom servomechanism. Since in the model presented in this paper, disturbances on the mechanism are considered, so an extende...
متن کاملDesign of a Myoelectric Controller for a Multi-dof Prosthetic Hand Based on Principal Component Analysis
The goal of this investigation is to develop a multidegree of freedom (DOF) prosthesis controller that uses myoelectric signals as control inputs and which has been dimensionally optimized using Principal Component Analysis (PCA). Currently available multi-DOF hand prostheses cannot be fully utilized because there are fewer control inputs than the number of degrees of freedom (i.e. – joints) th...
متن کاملFuzzy Logic Control of a Multifingered Hand Robot Using Genetic Algorithm Based on DSP
This paper presents the fuzzy control of a five fingered robot hand by using the genetic algorithm and TMS320F2812 chip. Because of its high-speed performance, its support for multi-motor control and its low power consumption, TMS320F2812 DSP from TI demonstrates itself as an ideal candidate for the five fingered robot hand. There are five fingers and each finger has three degrees of freedom (D...
متن کاملDEDICATION To Mama - Papa ii
GODBOLE, RAHUL PUSHPAK. Design of a Flexible DSP Based Controller Hardware System for Power Electronics Applications. (Under the direction of Prof. Subhashish Bhattacharya). This thesis proposes the concept of a universal controller hardware system for power electronics applications. With the presence of generic interfaces and communication schemes, this system can be used in various other cont...
متن کامل