1. In this paper, the mathematical models of open loop system and feedback closed-loop system of a micro feed servo system using magnet are studied.

2. Compared with closed loop system, open loop system has higher efficiency and wider application.

3. Cooling water system is an open loop system, simple in air-conditioning system.

4. Hydrostatic transmission system used in electric forklift truck is generally closed loop, but sometimes open loop system is more convenient for system configuration.

5. To design the control strategy for heating metal, the open loop system model of the metal heat conductor shall be obtained first.

6. On the basis of three-phase inverting circuit, this paper describes how to make the control method of open loop system in closed loop system.

7. The slotted pipe with narrow slots can be mass worked economically and efficiently by means of open loop system and hand automatic model shifter.

8. By the matching design method, the dynamical equations of dosed loop system can match those of the open loop system.

9. The pape makes dynamic particular analysis of the response of the system, also drawing the Bode figure of open loop system.

10. With the help of the method, the control accuracy similar to that of close loop system can be obtained and the system has the same stability as that of open loop system.

11. Studied the system feasibility, a mathematical Model to this design was gived, which had not only the control precision of the fully closed loop system, but also the stability of the open loop system.

12. Through static and dynamic analysis it is sure that open loop system is better than close loop one on the performance.

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13. The work of agencies to rely on speed and for adjusting the pump or motor variables agencies to achieve, to avoid the open loop system for the process are the hydraulic impact and energy loss.

14. The surface water source heat pump system is classified as open loop system and closed loop system.

15. The text makes dynamic particular analysis of the response of the system, also drawing the Bode figure of open loop system.

16. Based on 2 norm estimate of matrix, stability of T S type fuzzy controller is studied and several sufficient conditions of open loop system are proposed .