I'm planning to utilize the EMG signal acquired from the lower limb muscles to derive the knee exoskeleton robot. I've read various methods of the EMG based control for exoskeleton robot application; however, I did not figure out the main hurdle of using EMG-based control.
It is not a drawback, rather there are difficulties because EMGs are very noisy, very weak, and susceptible to interference from other muscles. To get a good fidelity signal, you will need a state of the art sensors, in addition to signal conditioning and state of the art filtration.
True, there is no major drawback. But these kind of signals normally are sensitive
Like any other bio medical signal, EMG signals ( particularly those collected from surface measurements (noninvasive method) also suffer from unwanted noise and overlap of spectrum with other signals. Separating the EMG signals for a specific organ (muscle function therefore requires certain amount of off line processing and hence cannot be directly used for assistive purposes.
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