35results about How to "Reduce peak power requirements" patented technology

Systems and method of detection and discrimination of targets in the presence of interference are disclosed. A system transmits a signal and then receives signals including interference and reflections of transmitted signals. The system processes the received signals and transmitted signals to generate a 2D representation of the STAP cube with one of the dimensions collapsed. The system then reduces the interference contributions and identifies angle and Doppler component of potential targets. The system then computes slices, which are one dimensional representation of cross-ambiguity functions of the received and transmitted signals. It reduces the interference contributions in the slices and determines range components of the targets.

In one aspect of the invention there is disclosed a multicolor thermal imaging system wherein different heating elements on a thermal print head can print on different color-forming layers of a multicolor thermal imaging member in a single pass. The line-printing time is divided into portions, each of which is divided into a plurality of subintervals. All of the pulses within the portions have the same energy. In one embodiment, every pulse has the same amplitude and duration. Different colors are selected for printing during the different portions by varying the fraction of subintervals that contain pulses. This technique allows multiple colors to be printed using a thermal print head with a single strobe signal line. Pulsing patterns may be chosen to reduce the coincidence of pulses provided to multiple print head elements, thereby reducing the peak power requirements of the print head.

The technical field of the power supply of the present invention, in particular, relates to a method and device for charging a capacitor with constant power input and constant current output characteristics. The present invention mainly uses the characteristics of the intermittent working mode to transfer the excess energy returned to the temporary energy storage link, so as to realize the charging of the energy storage link while charging the load. The path of the energy storage link to the output energy of the resonant circuit is constructed by means of the excitation source, so that during the charging of the load, the temporary energy storage link plays an auxiliary role in providing power in parallel with the power grid; through the real-time adjustment of the switching time, the constant power supply is realized . Since the temporary energy storage link is a voltage source, and the DC-link’s DC bus is also a voltage source, in order to avoid a short circuit between two voltage sources of different voltages, the two voltage sources are respectively connected in series with a bidirectional switch before connecting to the resonance loop, so that reliable switching of the resonant current between voltage sources can be achieved.

The invention relates to a cabin door transient actuating device based on a valve control variable displacement motor and a driving method. One embodiment of the device comprises a servo valve, the variable displacement motor and a load-sensitive mechanism. A first oil inlet of the variable displacement motor is connected with a first oil outlet of the servo valve, and a first oil return port of the variable displacement motor is connected with a second oil outlet of the servo valve. An output shaft of the variable displacement motor is connected with a cabin door load and used for outputting torque for driving the cabin door load. The load-sensitive mechanism is used for adjusting the dip angle of a swash plate of the variable displacement motor based on the hydraulic pressure difference between the first oil inlet and the first oil return port of the variable displacement motor. By the adoption of the scheme, the displacement of the variable displacement motor is adjusted by sensing the load, the throttling effect on the servo valve is weakened under the working condition that the load is not uniform or the load is small, and then the energy utilization rate of a system is increased.

A dual-flywheel-based excavator boom series hybrid power system, the prime mover is connected to a first hydraulic pump, and the P port of the first hydraulic pump is connected to the P port of the first hydraulic motor through a first check valve; the first The hydraulic pump is sequentially connected to the second hydraulic pump through the one-way clutch, the first transmission, the first clutch, the first flywheel, the second clutch, and the second transmission; the S port and P port of the second hydraulic pump are respectively connected to the oil tank and the main reversing The P port of the valve is connected, the A port and B port of the main reversing valve are respectively connected with the rod chamber and the rodless chamber of the boom hydraulic cylinder, and the T port of the main reversing valve is connected with the P port of the second hydraulic motor. The T ports of the first hydraulic motor and the second hydraulic motor are connected to the oil tank; the second hydraulic motor is connected to the second gear through the third clutch, the second flywheel, the fourth clutch, and the third transmission in sequence; the first gear is set in the one-way clutch It is on the shaft between the first transmission and meshes with the second gear. The system can recover and reuse energy.

The invention discloses a single-degree-of-freedom active ankle prosthesis based on a closed hydraulic drive system, including a carbon fiber foot plate, a micro hydraulic pump, a hydraulic integrated block, a first accumulator, a second accumulator, and a first pressure sensor , the second pressure sensor, the third pressure sensor, the first normally closed switch valve, the second normally closed switch valve, the first normally open switch valve, the second normally open switch valve, the double rod hydraulic cylinder, the first one-way valve , the second one-way valve, the third one-way valve, the fourth one-way valve, the connecting hinge, and the ankle connecting frame; compared with the passive ankle joint prosthesis, the present invention enables the wearer to obtain a biological similarity to the human body by actively providing the driving force. The characteristic walking gait improves the wearing comfort of the amputee; in the passive mode, the shock absorption of the hydraulic cylinder can be used to provide damping; in the present invention, the continuous rotation of the motor driven by the hydraulic pump and the energy storage of the accumulator can reduce the impact on The peak power requirements of hydraulic pumps and motors, and reduce power consumption during long-term walking to improve endurance.

The invention discloses an active-passive combined prosthetic knee-ankle hydraulic circuit with energy recovery function, which aims to solve the problems of high energy consumption and short battery life of an active hydraulic prosthetic system. The hydraulic circuit includes a motor, a coupling and a hydraulic pump. , the first accumulator, the second accumulator, the adjustable flow valve, the knee joint hydraulic cylinder, the ankle joint hydraulic cylinder, the first three-position four-way proportional valve, the second three-position four-way proportional valve, the third three-position Four-way proportional valve, first pressure sensor, second pressure sensor, third pressure sensor, fourth pressure sensor, fifth pressure sensor, sixth pressure sensor, first pipeline and second pipeline, the present invention uses three positions The four-way proportional valve controls the accumulator to absorb and release the energy in the process of human walking. Combined with the active and passive hybrid drive mode, the energy consumption of the system is effectively reduced, and the performance of the lower limb prosthesis is significantly improved. At the same time, the structure is simple and easy to achieve lightweight.