Results 221 to 230 of about 250,431 (264)
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Variable Cascade Control Structure for Tubular Reactors
Chemical Engineering & Technology, 2015AbstractThe application of a variable control structure for tubular reactors, based on multiple temperature measurements, is explored. The proposed structure allows the controller to adapt to temperature error variations along the tubular reactor. Controllers can be designed from simple input‐output first‐order dynamical models obtained from step ...
Galo R. Urrea‐García +3 more
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Automatic tuning of cascade structure CNC controllers
6th International Workshop on Advanced Motion Control Proceedings, 2000Proposes a method for the automatic tuning of cascade structure CNC controllers. The design takes into account constraints on the system such as delays induced by numerical control effects and elasticity of bodies. The robustness of the algorithm is ensured by requiring minimal stability margins.
M.T. Pham, Ph. Poignet, M. Gautier
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Cascade Reconfiguration Structures in Fault Tolerant Control
2017The paper considers the problem of control reconfiguration to retain fault tolerance in linear continuous-time systems. The full state control law is combined with the static output compensation for the reference specification in the so called cascade reconfiguration structure.
Dusan Krokavec, Anna Filasová
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Research on Control and Structure of the Cascaded Multilevel Inverters
2011 3rd International Workshop on Intelligent Systems and Applications, 2011The cascade multilevel inverter can reduce the voltage stress of the power switches and output filter inductance, also it is easy to modularize and some phase voltages are redundant, so it is very suitable for high voltage applications. In this paper a multi-level cascaded DC/AC converter with on single DC power source are presented and a practical ...
Huiying Huang, Yabin Xue, Yibo Xin
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Lateral Displacement Control for Agricultural Tractor Based on Cascade Control Structure
International Journal of Control, Automation and Systems, 2020Path tracking control for the autonomous tractor has been receiving increased attention with the rapid development of modern agriculture. Lateral displacement control is essential for the path tracking effect. The objective of this research is to develop a lateral displacement control system to control the lateral position of tractor.
Shourui Wang +3 more
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A cascaded control structure for air-path control of diesel engines
Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 2014In order to comply with increasingly stringent diesel-engine emission legislation, fast and precise control of the turbochargers and exhaust-gas recirculation are necessary. The difficulties lie in certain disadvantageous plant properties such as cross-couplings and non-linearities, the disturbance of the air path by fast operating-point changes and ...
Zentner, Stephan +4 more
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ISA Transactions, 2021
This article presents a unified approach of controller design in cascade control structure (CCS) for unstable, integrating and stable processes with dead-time to achieve enhanced load disturbance rejection. The design of inner and outer loop controllers in CCS is based, partially on the direct synthesis approach and partially on the pole placement ...
Mohammad Atif Siddiqui +3 more
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This article presents a unified approach of controller design in cascade control structure (CCS) for unstable, integrating and stable processes with dead-time to achieve enhanced load disturbance rejection. The design of inner and outer loop controllers in CCS is based, partially on the direct synthesis approach and partially on the pole placement ...
Mohammad Atif Siddiqui +3 more
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Design of Cascade-Smith Hybrid Control Structure for Pressure Control
Key Engineering Materials, 2009A new hybrid-control structure for the compensation of the volume-delay negative effect in the mixed-gas pressure control is designed. The volume-delay mechanism is discussed. A Smith predictor is used in the primary loop of a cascade control system where the secondary loop has a negligible delay while the primary loop has a significant and variant ...
Yu Dong Xie, Yan Jun Liu, Yong Wang
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Journal of the American Chemical Society, 2021
Radical cascade cyclization reactions are highly attractive synthetic tools for the construction of polycyclic molecules in organic synthesis. While it has been successfully implemented in diastereoselective synthesis of natural products and other complex compounds, radical cascade cyclization faces a major challenge of controlling enantioselectivity ...
Congzhe Zhang +4 more
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Radical cascade cyclization reactions are highly attractive synthetic tools for the construction of polycyclic molecules in organic synthesis. While it has been successfully implemented in diastereoselective synthesis of natural products and other complex compounds, radical cascade cyclization faces a major challenge of controlling enantioselectivity ...
Congzhe Zhang +4 more
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Normalized cascade structures and state feedback control logic synthesis
42nd IEEE International Conference on Decision and Control (IEEE Cat. No.03CH37475), 2004This paper proposed a new state feedback controller synthesis method for solving forbidden states avoidance problems. The method can be used when all influentially uncontrollable subnets have normalized cascade structures, which differ from marked graph, state machine as well as forward and backward conflict-free structure. Two advantages of the method
Lida Dong +3 more
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