title: A test-subject-tracking measuring carriage with optoelectronic position-feedback control for the kinematic analysis of the gait of orthopedic patients.
abstract: A measuring carriage system has been developed in our biomedical motion-analysis laboratory for the continuous optoelectronic measurement of angular coordinates or point coordinates in the sagittal plane of a walking patient. The carriage is automatically driven on a guide rail in parallel with the advancing test subject along a level walkway 14 m in length. The carriage propulsion is effected by a servomotor which is controlled by an object-tracking optoelectronic position-feedback control system. The paper describes the constructional principles of the system and gives a basic analysis of its feedback-control behavior.
mesh_terms: D001696:Biomechanical Phenomena; D004582:Electronics, Medical; D005684:Gait; D006621:Hip Joint; D006622:Hip Prosthesis; D006801:Humans; D007719:Knee Joint; D007720:Knee Prosthesis; D008991:Monitoring, Physiologic / Q000295:instrumentation*; D010003:Osteoarthritis / Q000503:physiopathology / Q000601:surgery