A muscle motivation signal input device, human-machine operating system and identification method thereof. The system includes a mechanomyography (MMG) signal input device, a signal processing unit, a motion database and a calculating unit. The MMG signal input device is sleeved on a measuring portion of a testing body. The measuring portion has a plurality of muscle groups. The signal processing unit is used to receive the MMG signals of the muscle groups and pre-process the integrated MMG signals to obtain a processed signal. The motion database is used to store a motion model. The calculating unit is used for signal intensity computation, data segments, feature vector calculation, and user’s motion recognition etc. After getting recognized results, the calculating unit outputs corresponding control signals.一種肌動訊號輸入裝置、人機操作系統及其辨識方法。此系統包括一肌動訊號輸入裝置、一訊號處理單元、一動作資料庫以及一計算單元。肌動訊號輸入裝置套設於一受測體的一量測部位上，量測部位具有多數個肌肉群。訊號處理單元用以接收此些肌肉群的肌動訊號，並進行訊號整合與前處理，以得到一處理後訊號。動作資料庫用以儲存一動作模型。計算單元用以進行訊號強度計算、資料分段、特徵向量計算以及受測體動作辨識等功能，並根據辨識結果輸出相對應之控制訊號。
