抄録
High-speed response in control systems is essential in fields such as robotics, precision machinery, and medical devices. Digital controllers using microcontrollers or DSPs often suffer from processing delays due to A/D and D/A conversions and discrete-time computation, which can cause instability in lightweight and fast-responding systems. This study explores high-speed control computation using analog electronic circuits that operate in continuous time and are free from such delays. A small magnetic levitation system was employed as an experimental example requiring rapid feedback control. Numerical simulations were conducted by introducing control delays to determine the stability limit. Based on the results, an analog feedback controller was designed and implemented. Experimental results showed that the proposed analog control circuit achieved stable levitation of a small neodymium magnet. These findings demonstrate that analog electronic circuits provide an effective approach for realizing high-speed control computation in systems where response delay critically affects stability
