Robust loop shaping–fuzzy gain scheduling control of a servo-pneumatic system using particle swarm optimization approach

Pneumatic-Piezoelectric Hybrid Vibration Suppression For a Flexible Translating Beam Using Adaptive Fuzzy Sliding Mode Control Algorithm

“…2 Moreover, for a longstroke pneumatic rodless cylinder, higher nonlinear dynamics due to a large operation range may occur; thus, it is difficult to design an effective controller. 3 Besides, the highly nonlinear flow through pneumatic components and the pressure dropping and time-delay along the connecting tube also result in control errors. 4 For complicated nonlinear pneumatic servo systems, the conventional PD controller shows a poor capacity to cope with; it may not give a satisfactory control performance.…”

“…A fuzzy gain scheduler of the local state feedback controller was designed for servo-pneumatic actuators.2 Robust loop shaping-fuzzy gain scheduling control (RLSFGS) was applied to design a nonlinear controller for a long-stroke pneumatic system. 3 A combined discrete variable structure control with self-tuning adaptive control was developed for positioning control strategies of a pneumatic cylinder and a piezoelectric actuator. 5 Further, a kind of multiple-surface sliding controller was designed for pneumatic servo systems.…”

Covariance matrix adaptation evolution strategy based design of fixed structure robust H∞ loop shaping controller

“…To overcome the limitations of LMI approaches, evolutionary computing (EC) techniques are very popular in solving the non-convex, non-smooth, multi-modal and badly scaled problems [17]. Many, EC techniques such as Genetic Algorithm (GA) [18,19], Particle Swarm Optimization (PSO) [20,21] and Heuristic Kalman Algorithm (HKA) [16], Hybrid PSO [22] are used for designing the fixed structure H ∞ loop shaping controller.…”

Direct adaptive fuzzy control of a translating piezoelectric flexible manipulator driven by a pneumatic rodless cylinder

“…Therefore, the design of a high performance controller for this actuator is not easy due to its high nonlinearity and parameter variations in the system. Especially for a long stroke pneumatic cylinder, higher nonlinear dynamic due to wide operation range is occurred, making it difficult to design an effective controller to control the plant [3].…”

“…In some of the recent work involving pneumatic actuation, 5-port proportional valve is largely used for pneumatic servo systems [3,4]. In addition, servovalves have been used to achieve high performances in various positioning or force control tasks [5].…”