3results about How to "Simplify design difficulty" patented technology

The present application relates to the technical field of vehicle control, in particular to a kind of electric automobile drive anti-skid control method and system.If TCS is in the activated state, then output torque F t =F a , otherwise, the validity of brake pedal signal is judged;If valid, then output torque F t =F a , if invalid, then the slip rate λ is judged;If the slip rate λ is in the optimal slip rate interval, then drive anti-skid exit time T1 cumulative count is executed, drive anti-skid enable time T2 cumulative count is zero, until T1 is greater than drive anti-skid exit time T qu , then output torque F t =F a ;Otherwise, then drive anti-skid exit time T1 cumulative count is zero, drive anti-skid enable time T2 cumulative count is executed, until T2 is greater than drive anti-skid enable time T en , then judge whether current demand torque F a is greater than output torque limit F Limit ;If yes, then output torque F t =F a *C;If not, then output torque F t =F a .The present application saves the space in the car, simplifies the difficulty of hardware architecture design, and is conducive to the arrangement of hardware equipment.

This invention provides a fully digital wireless time and frequency synchronization system and method, applicable to the fields of positioning, navigation, and timing technology. The system includes: a signal transceiver module for bidirectional time transmission with a master node via a wireless channel and recording transmission and reception timestamps; a time measurement module for calculating time and frequency deviations based on the timestamps and generating a digital frequency control word; a microelectromechanical system (MEMS) oscillator module for receiving the frequency control word via a digital interface and adjusting the output frequency in real time; and a synchronizer module for generating a second pulse signal based on the adjusted frequency. The adjusted frequency is fed back to the signal transceiver module as a local clock driver, forming a closed-loop frequency control. This invention deeply integrates high-precision time measurement with a MEMS resonator, achieving fully digital closed-loop control. While maintaining advantages such as small size, low power consumption, and vibration resistance, it significantly improves the transient response speed and long-term stability of frequency synchronization and supports rapid customization of special frequency points.

This invention discloses a cascaded low-loss bent waveguide design method based on vector synthesis. The steps are as follows: S1, the bent waveguide is regarded as a curve, and four control vectors are defined to describe the curve: the curve start point, the curve end point, a fixed distance point in the tangent direction of the curve start point, and a fixed distance point in the tangent direction of the curve end point, and the parameter vector of the curve is constructed; S2, based on the connection requirements and curvature smoothing characteristics of the bent waveguide to be designed, boundary condition constraint equations are established, and the algebraic relationship between the four control vectors is solved; S3, the structural parameters of the bent waveguide are defined, and the four control vectors are transformed into expressions related to the design parameters to be determined, namely the structural parameters and length; S4, following the order of length first and then structural parameters, with the goal of obtaining the minimum transmission loss, the unknowns in the design parameters to be determined are determined sequentially; this method has the characteristics of achieving ultra-low transmission loss and ultra-small structural size, which greatly simplifies the design process and reduces the difficulty.