A linked velocity profile design for effective motion control of hydraulic systems

In this paper, we present a new generating method for the velocity profile to increase productivity and stability for industrial hydraulic systems. Most industrial hydraulic systems repeat a single motion plan that consists of several velocity profiles to produce products. It has deceleration and acceleration terms between each velocity profiles. These terms cause delay to finish a one-motion plan. Useless delay time in the industrial field will be directly connected to low-productivity. Motion planning using high-speed can cause noise, vibration and safety problems. Therefore, we propose a new method to generate the velocity profile with non-delay time. The new method can connect the velocity profiles in one motion plan after eliminating useless acceleration or deceleration terms. Eliminating these terms can reduce motion moving time and physical shock with inertia. The motion moving time is related with productivity and the shock is related with safety probability. Especially, the shock that is even small can generate another big shock and effect to human. Thus, the industrial systems consider these two issues very carefully. The proposed velocity profile can increase performance from these angles. A pressure machine based on a hydraulic system will operate with the new velocity profile using the proposed implementation method and be proved by two result of motion plan.