Abstract: A controllable and stable sinking/floating system for cage aquaculture is illustrated, which has a net cage and the sinking/floating units. The net cage comprises a frame and a net body installed on the frame. The sinking/floating units are installed on the frame, each of the sinking/floating units comprises a water storage chamber and a liquid flow controller, the water storage chamber has an inlet and an outlet, and the liquid flow controller controls water to flow out via the outlet from the water storage chamber or to flow into the water storage chamber via the inlet. When the water flows out via the outlet from the water storage chamber, the sinking/floating unit floats; and when the water flows into the water storage chamber via the inlet, the sinking/floating unit sinks.

Abstract: A vacuum absorbing platform, having contiguously a base and a plate unit disposed on the base and having a body, a front panel and a rear panel. The body has a plurality of cells contiguous with each other and a plurality of first openings configured on the walls of the cells. The front panel is secured on one side of the body to seal the cells and has a plurality of voids communicate with the cells respectively. The rear panel is secured on the other side of the body to seal the cells. A plurality of adjusters are located between the base and the plate unit to regulate the distance therebetween.

Abstract: A phase shift full bridge power converting system and a control method has the phase shift full bridge power converting system with a power converter, a controller, a load state detecting module, a switching controller, a switch module, a command generating module, a comparator, and a modulator module. The load state detecting module interfaces with the power converter and the switching controller. The load state detects module detects load parameter data of the power converter and switches a state at an output by using the switching controller. The controller obtains an error value between an output voltage of the comparator and a command voltage and calculates a duty cycle parameter by using the error value. According to the duty cycle parameter, a pulse control signal is generated to be outputted to a drive module for controlling the driving of the power converter.

Abstract: A phase shift full bridge power converting system and a control method has the phase shift full bridge power converting system with a power converter, a controller, a load state detecting module, a switching controller, a switch module, a command generating module, a comparator, and a modulator module. The load state detecting module interfaces with the power converter and the switching controller. The load state detects module detects load parameter data of the power converter and switches a state at an output by using the switching controller. The controller obtains an error value between an output voltage of the comparator and a command voltage and calculates a duty cycle parameter by using the error value. According to the duty cycle parameter, a pulse control signal is generated to be outputted to a drive module for controlling the driving of the power converter.