Abstract: In this paper, a tracking control of hydroforming pressure which is used for precision forming of sheet metals, is considered. In this process, forming pressure of the process needs to be ...

Abstract: This paper deals with a position control of hydraulic servo systems subjected to unknown and time-varying external load disturbances. Since hydraulically operated processes are often subjected to ...

Abstract: The dynamic characteristics of a load-sensing hydraulic servo system are complex and highly nonlinear and, furthermore, the stability is critically deteriorated compared with that of the conventional ...

Abstract: Although the ring rolling process is now finding increasing applications in many wider fields, analytical design methodology for controlling the process has been little explored. This paper ...

Abstract: An analytical model is presented to describe the dynamic characteristics of the radial-axial ring rolling process. Growing motions of rolled ring are analyzed in relation to the actions of ...

Abstract: An electrode wear has been found to cause considerable quality variation in the process of resistance spot welding. This paper presents a study on the electrode wear growth and develops a ...