Based on analyzing the generated mechanism of surplus torque,disturbance of surplus torque can be eliminated by adopting synchro-compensation.

According to characteristic of synchro-compensation eliminating disturbance torque for electro-hydraulic loading simulator, referring to the method of model reference adaptive control system, this paper takes steering as referring model, synchro-motor as controlled system to improve the precision of synchro-compensation and eliminate disturbance torque at most.

We designed a new optical fiber temperature sensor,which significantly improved the accuracy and stability of temperature measurement by utilizing double wavelength light source and designed compensation loop.

These resultsindicate the reasons why this hydraulic system used synchronous circuit with speed regulating valve do not satisfy the operating requirements of adjustable furnace throat.

In order to overcome the defects existing in the original hydraulic pres sure flat system, such as unsteadiness and vibration during elevating and descen ding of flat, the hydraulic pressure synchronous loop was designed.

Intelligent controller of power-factor automatic compensation based on PIC single chip;

Study of automatic compensation on the braking device of Down Belt Conveyor;

Generally support the water pressure adjustment and automatic compensation that strength can't according to mine well downfeed systems.