Fault Diagnosis and Control of a KYB MMP4 Electro-Hydraulic Actuator for LDVT Sensor Fault

  • Tan Van Nguyen
  • Cheolkeun HaEmail author
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10955)


The electro-hydraulic actuator (EHA) has been used for the precise position and the force con-trol applications. Many controllers have been applied to EHA such as sliding mode, and fuzzy PID controllers. However, the sensor fault problem in the EHA system is difficult to solve and challengeable in controller design. The system can lead to a damage if any sensor becomes faulty. Therefore, in this paper, a fault tolerant control (FTC) of a KYB MMP4 electro-hydraulic actuator is applied based on the mathematical modeling for tracking control in the sensor fault condition. Herein, the FTC for detecting and isolating the sensor fault signal is designed using the unknown input observer (UIO). In the sensor fault case, the fault detection and isolation (FDI) generates the feedback signal to the PID controller to drive the position of the actuator. The simulation and experimentations are performed to verify the performance of the FTC.


Unknown input observer Fault-tolerant control PID 


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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Graduated Student, Department of Mechanical and Aerospace EngineeringUlsan UniversityUlsanSouth Korea
  2. 2.Department of Mechanical EngineeringUniversity of UlsanUlsanKorea

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