Abstract
In this paper, we propose an electronic compensation control scheme for pump-valve coordinated (PVC) systems to replace post-valve hydro-mechanical compensation in load-sensitive (LS) systems of truck cranes. This approach aims to address the issues of high energy consumption and low tracking accuracy associated with pressure compensators. A simplified interval type-2 fuzzy proportional-integral-derivative feedback (SIT2FPIDFb) controller is developed to determine the main valve opening based on flow parameters, reference signal, and actuator status. An innovative type-reduction algorithm, utilizing iterative computation, is introduced to enhance the solving process. Considering load variation disturbances in truck crane luffing systems, a type-1 fuzzy feedforward (T1FFf) controller collaborates with the primary controller to effectively resist the impact of disturbances. Experiments conducted on truck cranes demonstrate the feasibility and effectiveness of the proposed control strategy.
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