Simultaneous and proportional myoelectric control

目前用于动力假肢的肌电控制的软件和硬件都局限于顺序的，通常是开/关功能选择。这部分是由于现有的假体终端设备的性质，它们在功能数量和灵活性方面受到限制。由于截肢者人数的增加和对灵巧度的要求，这种情况正在迅速改变。功能增强的多功能假体正在变得可用，并有望取得显著和快速的改进。这种变化必须伴随着改进的控制器的开发，以利用功能。肌电控制在这方面发挥着重要作用，为此，我们的研究最近被导向肌电控制器的发展，用于多功能假肢的同步和比例控制。目前已经取得了相当大的进展，但是还需要扩展研究结果，以允许假肢使用者进行动态肌肉收缩，减少所需电极的数量，提高控制性能，并减少由于肌电通道之间的串扰而导致的控制性能下降。这些改进将使义肢控制器更易于使用，并且使义肢更容易制造。

Proposal SummaryThe current software and hardware in myoelectric control for powered limb prostheses are limited to sequential and, typically, on/off function selection. This is due, in part, to the nature of the available prosthesis terminal devices in that they are limited in number of functions and dexterity. This is rapidly changing due to increasing numbers of amputees and demand for much improved dexterity. Multifunction prostheses with increased capability are becoming available, and are expected to make marked and rapid improvements. This change must be accompanied by the development of improved controllers to take advantage of the functionality. Myoelectric control has a major role to play in this regard and to this end our research has recently been directed to the development of myoelectric controllers for simultaneous and proportional control of multifunction prostheses. Considerable progress has been made, however there is a need to extend the results to allow dynamic muscle contractions on behalf of the prosthesis user, to decrease the number of electrodes required, to increase the control performance, and to reduce control performance degradation due to crosstalk between myoelectric channels. These improvements will make the prosthesis controller more user friendly, and the prosthesis easier to fabricate.