Introduction Orthopaedic insoles are used in sports medicine practice to treat overuse injuries although clinical evidence is still lacking. There are only few randomized controlled trials with male cohorts available [1]. Moreover, biomechanical effects of insoles remain unclear. Besides mechanical effects ("alignment of the skeleton"), sensorimotor effects are discussed suggesting an influence...

background : although many studies have been performed on occupational and industrial musculoskeletal disorders in iran, small scale industries have been less studied and evaluated. the purpose of this study was to perform an ergonomic assessment of handicraft workers in isfahan, iran, using the assessment of repetitive tasks (art) tool in 2015. methods: this descriptive-analytical and cross-se...

This paper concerns stability analysis and controller design for repetitive control. First, a two-dimensional (2D) continuous-discrete hybrid model of a repetitive control system is established. Next, new criteria for the asymptotic stability of the system are presented based on the model. Then, these criteria are extended to calculate lower bounds on stability margins to design a suitable cont...

An algorithm based on fuzzy-repetitive control for the output waveform compensation of single-phase CVCF inverters is presented. The performance of CVCF inverters is evaluated in terms of output voltage waveform distortion with linear or nonlinear loads and transient response due to sudden changes in the load. The fuzzy PD controller is used to improve transient performance whenever the system ...

This paper is concerned with uncertain systems subject to periodic disturbances with a known period, and the discrete-time variable structure repetitive control methodology is applied to address the control problem. The notion of quasisliding mode is reviewed in this paper. Switching-function dynamics obtained with the proposed repetitive strategies are desirable, which govern both reaching pha...

This paper presents a simple feed forward adaptive multi-periodic repetitive control scheme for the ASPR(Almost Strictly Positive Real) or ASNR(Almost Strictly Negative Real, See Appendix for definition) plant to asymptotically track/reject multi-periodic reference/disturbance signals. The lyapunov stability analysis is given. This is an extension work of the lyapunov stability analysis for mul...