Development of a control-assist mode multi-DOF bionic arm

Abstract A bionic arm is an artificial device that restores some of the functionality of a physically challenged person’s missing arms. Electromyography (EMG) impulses operate today’s bionic arms. Many people reject these devices because of their weight, expense, and limited Degrees Of Freedom (DOF), because of the intrusive procedures required to get stronger signals. Amputees who no longer have arm function find rehabilitation to be more difficult. It is essential to have a more straightforward method for deciphering signals and operating the bionic arm. This work focuses on creating bionic arm control systems that are both affordable and capable of several degrees of freedom, hence reducing the need for extensive rehabilitation. This system combines mechanical and electrical components and is operated by the user. It is created by utilizing the life cycle and systems engineering concepts. Three non-invasive control systems speech recognition, keypad control, and foot pressure control provide inputs to the transmitter block, which comprises a microprocessor. Five DC motors comprise the reception blocks, and motor drivers drive them in response to input signals received wirelessly from the transmitter. The control system that was designed may provide more than ten degrees of freedom. Depending on what the amputees need, these control methods can be utilized separately or in combination. The method has the advantage of being straightforward and requiring fewer operations and recovery times. By delivering the signals wirelessly, fewer wiring harnesses are needed on the transmitter and receiver blocks.