Research on a control system based on stepping motor for ship's controllable pitch propellers
This paper presents description of a laboratory stand for testing servo-mechanisms of ship low-power CP propellers, as well as a remote control system for such propellers, based on electric stepping motor. Also, are presented results of the first series of tests of the control system, carried out on non-loaded CP propeller by applying stepped values of propeller pitch at two values of rotational speed of the stepping motor.
This paper introduces the technological status and development trends of LED intelligent lighting remote control system. Firstly, we put forward four requirements of LED lighting remote control technology. Then, two modes of LED lighting remote control system are discussedwired control and wireless control, which are generally used. We also discuss the advantages and disadvantages of these technologies such as the power line communication technology, RS-485 technology, ZigBee technology, GPRS technology. Finally, we introduce the two development trends of LED lighting remote control system in the future.
Research on a control system based on stepping motor for ship's controllable pitch propellers
