3results about How to "Shorten the stabilization time" patented technology

This invention belongs to the field of heat load regulation technology, specifically relating to an air-conditioned comfort environment laboratory with controllable heat load, comprising an inner chamber, an outer chamber, and an air circulation system. Both the inner and outer chambers are enclosed spaces, with the inner chamber located within the outer chamber and enclosed by insulation material. The air circulation system includes an intake airway and an exhaust airway connecting the inner and outer chambers. This invention controls the heat load within the inner chamber by changing the amount of hot or cold air entering the outer chamber through the air circulation system. This solves the common problems of difficult load regulation and inaccurate load calculation in brick-walled thermal environment test chambers, and avoids the problem of insufficient load in previous laboratories based on insulated panels. Furthermore, it has advantages over the condensation problem on the inner chamber walls caused by using water coils to apply the load. It reduces the environmental stabilization time and significantly improves the utilization rate of the laboratory.

The application discloses a driving motor, a camera module and an electronic device, and belongs to the technical field of camera modules. The driving motor comprises a shell, a carrier, a magnetic piece and a coil assembly. The carrier is located in the shell and is used for carrying a lens. The magnetic piece is connected with the carrier. The coil assembly is connected with the shell. The coil assembly comprises a first coil and a second coil. When the coil assembly is in a first energization state, the first coil and the second coil generate electromagnetic forces of the same direction on the magnetic piece, so that the magnetic piece drives the carrier to move. When the coil assembly is in a second energization state, the first coil and the second coil generate electromagnetic forces of opposite directions on the magnetic piece.

This invention relates to the field of heat pump control technology, and discloses a model-predictive CO2 heat pump defrosting control method and system. The method includes: collecting CO2 heat pump heating operation data; determining a frosting impact assessment coefficient by the deviation between the actual and theoretical heat exchange temperature difference; identifying the frosting deterioration period based on coefficient changes; and generating a defrosting start indicator by combining the inflection point of the return water temperature change rate. Based on this indicator, the valve opening degree and compressor frequency are sequentially configured to form a corresponding modulation sequence, driving the actuators and switching the defrosting mode when the exhaust pressure reaches the transition equilibrium point. Subsequently, a defrosting progress index is determined based on the temporal relationship between the extreme point of the heat exchanger outlet temperature and the saturation point of the compressor suction pressure. Finally, parameters are adjusted according to this index to generate a heating recovery command, achieving precise defrosting control and heating recovery. This invention can improve the efficiency of model-predictive CO2 heat pump defrosting control.