Joint motion estimation method based on myoelectricity myotone model and unscented particle filtering
A technology of unscented particle filter and joint motion, which is applied in the field of pattern recognition, can solve problems such as cumulative error, reduction of estimation accuracy, difficulty in identifying calculation amount, etc., and achieves reduction of cumulative error, strong precision and anti-interference ability, stability and Good real-time effect
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[0044] Such asfigure 1 As shown, this embodiment includes the following steps:
[0045] Step 1: Collect the myoelectric and myoelectric signals of the relevant muscles during the synchronous and continuous movement of the shoulder joint and elbow joint of the upper limbs of the human body. Specifically, ten volunteers performed flexion and extension exercises of the elbow joint and shoulder joint with and without weight. , each round of action cycle is about 10 seconds. The myoelectric and myoelectric signals of the relevant muscles during joint movement are collected by the electromyographic signal acquisition instrument and the acceleration sensor. The collected muscles are biceps brachii, triceps brachii and brachioradialis. Muscle, trapezius, teres minor, anterior deltoid, lateral deltoid and pectoralis major, and then preprocessed by band-pass filtering method.
[0046] Step 2: Simplify the Hill muscle model, and obtain the nonlinear expression of the EMG state-space mode...
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