5results about How to "High performance output" patented technology

The application provides a function type hybrid control method of an electric special vehicle driving motor, which combines a fuzzy PID algorithm and a conventional PID control algorithm through a switching function to obtain the comprehensive advantages of the two control algorithms. Meanwhile, in order to reduce the calculation burden and execution time of the controller and facilitate engineering implementation, a fuzzy proportional algorithm with the transient performance of the fuzzy PID algorithm is adopted instead. According to the operating conditions of the special vehicle, the operating state of the motor is segmented for research, and a set of rules or a separate fuzzy algorithm is used to determine the weight of the outputs of the two control algorithms. However, an additional fuzzy calculation is required, which increases the calculation time and gain constant adjustment, reduces the switching frequency of the control system, causes higher torque fluctuation, and further designs a switching function to calculate the output weight control of the two algorithm outputs, which not only reduces the torque fluctuation caused by redundant calculation, but also ensures that the vehicle driving motor works in the optimal control state.

The invention discloses a solid assembly type bulk acoustic wave resonator based on a coplanar electrode structure, which is characterized in that a coplanar left electrode layer and a coplanar right electrode layer are arranged on the uppermost layer, and the coplanar left electrode layer and the coplanar right electrode layer respectively form a piezoelectric oscillation pile with the opposite area between a suspension electrode layer and a middle piezoelectric film layer so as to generate high-frequency electromechanical oscillation. The device can be regarded as being formed by connecting two single solid-state assembled resonators in series, the coplanar left electrode layer and the coplanar right electrode layer do not need to lead out a lower electrode, and a radio frequency excitation signal is directly loaded on the coplanar left electrode layer and the coplanar right electrode layer. The coplanar left electrode layer and the coplanar right electrode layer do not need to lead out a lower electrode, and radio frequency excitation signals are directly loaded to the coplanar left electrode layer and the coplanar right electrode layer, so that the process manufacturing steps and difficulty are reduced, the yield is improved, and large-scale production of the solid-state assembly bulk acoustic wave resonator is facilitated.

The invention relates to a miniaturized laser ignition SiP module, which comprises electrode pins, a circuit substrate, a laser chip, a detector chip, a focusing lens group, a security switch, an ignition window, a packaging shell and a functional circuit, and is characterized in that a bonding pad is arranged on the circuit substrate, and a plurality of layers of metal wires are printed on the circuit substrate and are used for welding the laser chip, the detector chip and the functional circuit; the circuit substrate is fixed in the packaging shell, and overall airtightness is achieved through seal welding. When the ignition SiP module works, an external circuit signal is transmitted into the functional circuit through the electrode pins, the functional circuit controls the laser chip, the detector chip and the security switch, the laser chip outputs laser, the detector chip feeds back and outputs laser power, the focusing lens group focuses the laser, and the laser is output from the ignition window through the security switch to complete ignition. Based on the SIP technology, devices are assembled on the front layer and the back layer of the circuit substrate to achieve the laser ignition module, the size of an existing ignition module is greatly reduced, and an efficient and compact laser ignition solution is provided.

The present invention discloses an air conditioner and a refrigerant regulating method for the air conditioner, an air conditioner refrigeration system, a refrigerant regulating device and a pressure sensing device, wherein the refrigerant regulating device includes a gas-liquid storage device, a first control valve and a second control valve. During the operation of the air conditioner, the flow rate of the refrigerant in the refrigeration system is detected; according to the flow rate of the refrigerant and the pressure value collected by the pressure sensing device, the opening of the throttling device in the refrigeration system and the on-off state of the first control valve and the second control valve are controlled to adjust the flow rate of the refrigerant in the refrigeration system. By adopting the technical means of the present invention, it is possible to adjust the flow rate of the refrigerant in the refrigeration system according to different actual loads during the operation of the air conditioner, taking into account the requirements of energy saving and low consumption while ensuring the output capacity, thereby improving the user experience.

The invention relates to a rectangular coordinate-to-polar coordinate conversion method and device based on an LUT and CORDIC hybrid architecture. The method comprises the following steps: S1, sector folding preprocessing; s2, performing coarse rotation iteration; s3, generating a dynamic address; s4, a compression lookup table is queried; and S5, data compensation and reconstruction. According to the method, a small amount of CORDIC iteration is introduced to rotate the input vector to a very small angle range, so that the input space required to be covered by a subsequent lookup table is greatly compressed; meanwhile, the bit width and the address depth of a storage value in the LUT are remarkably reduced by combining module value residual storage and a dynamic truncation technology, so that the storage resources of the LUT are greatly reduced on the premise of ensuring the precision, and the hardware implementation cost is lower.