Control the method of a powerful person of the electromagnetism inside industria

With the method that is heated by incentive electric current at preventing solenoid and device. Extend when hydraulic pressure crock reach retractive when, driver of controller directive perch is inputted to solenoid one adjustable electric current, make system of electromagnetism a powerful person moves to connect the position. Subsequently, controller indicates exalted driver to stabilize electric current to solenoid input, hold put oneself in another's position of a powerful person in connect the position. Adjustable electric current and stable electric current are pulse. Of stable electric current occupy sky is more adjustable than be less than of electric current occupy sky comparing.