Taking the DCS of Hollyinfo company as a platform,adopting polyline-table control scheme,a follow-up control system of temperature-flow is designed,using low-concentration waste ammonia water to absorb the waste ammonia gas in ammonia recovery column.

Cooperative control scheme for phase lock loop and load sharing in parallel operation of UPS with no control interconnections;

Determination of control schemes of spraying quality for intelligent asphalt distributor;

The control scheme for three-pad static bias device of push-the-bit rotary steerable system;

On the control project of fourstreamplatefin heat exchanger;

Research and realization of the control project in the production of unitary detonating powder;

The control project of vinyl chloride rectification units based on designs of distrubance observer was demonstrated in detail.

With the special requirement, the control plans including control circuit for aninolysis furnace and Claus furnace and safe interlock of aminolysis recovery furnace are completed.

The paper is mainly focused on such aspects as system structure,control plan,equipment selection etc.

Introduced some control plan of 2 turbine\' coagulate water pump frequency conversion transformation in Xisaishan Power Plant,and Energy conservation effect.

1 fast cut back(FCB) at Wanglong power plant,the system may not work well for the controlling scheme of units operation in an isolated-island way after the unit FCB.

Aiming at solving surge of centrifugal compressor,this paper analyzes the gas equation of compressor and then put forward the control method to eliminate the surge of the centrifugal compressor.

Main control methods & some special measurement methods for the SL-2 type Ethylene Cracking Unit are discussed.

Two kinds of heat recovery methods for water-cooled chillers have been introduced,and the return hot water temperature control method has been recommended for the discharge gas heat recovery water chiller.