Abstract

The papers in this special section focus on modeling, analysis, and advanced control in motion-control systems. Precision, agility, robustness, efficiency, and intelligence are now becoming the design indexes for modern motion control systems. High control performance, intelligent functions, or efficiency improvements advance the level of motion control products or systems and bring a lot of benefits for companies. The difficulties for the control research academics and practicing engineers lie in various factors, such as nonlinearities, friction, complex internal dynamics, time-varying parameters in the system dynamics, external disturbances in the working environment, and complex work tasks. These make the control design a very challenging work. To employ advanced control algorithms and schemes, time-/frequency-domain modeling, system identification, observation for unmeasured states, estimation for pivotal parameters, and the corresponding analyses are often necessary.

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