Inspired by the single-blade hyperboloid, a new type of multi-bar shock absorber was designed, which can recover vibration energy. Its principle is to convert the droop reciprocating vibration of the vehicle in the spatial domain into the reciprocating rotational motion in the plane through the trajectory and force characteristics of the single-blade hyperboloid moving along the space. To improve the efficiency of energy regeneration, a mechanical motion filtering mechanism was designed. Through theoretical derivation, the energy regeneration formula of a new type of multi-rod shock absorber was obtained. After simulation analysis and experimental verification, under the input excitation of 1.82 Hz, the maximum instantaneous output voltage can reach 29 V, the maximum excitation current is 0.58 A, and the maximum power is 16.84 W. The efficient recovery and utilization of energy have been achieved, and the ride comfort of the vehicle has been improved.

Vegetable seeders effectively reduce labor intensity and improve seeding uniformity and operation efficiency. However, existing models suffer from limited functionality, inadequate intelligence, and low energy efficiency. Accordingly, an intelligent vegetable seeder integrating furrow opening, seeding, soil covering, and compaction was developed, with key parameters and working principles of the seed-metering device, furrow opener, and soil-covering and compacting device defined. Its intelligent control system optimized seeding monitoring and execution control via the Kalman filter algorithm. A dual power-supply mode (photovoltaic (PV) + storage battery) ensured operation endurance. Using a Box–Behnken design, the seed-metering device parameters were optimized by response surface methodology, with pocket wheel speed, seed-stripping brush installation angle, and pocket count as factors and seeding qualified rate as the index. The results showed that the factors ranked in descending order of influence were the number of pockets, rotational speed of the pocket wheel, and the installation angle of the seed-stripping brush; the theoretically optimal parameters were pocket wheel speed of 45.70 r·min⁻¹, brush installation angle of 34.71°, and 13.84 pockets, corresponding to a model-predicted peak seeding qualified rate of 99.04%. The proposed seeder achieves precision seeding for small-sized pelleted vegetable seeds, whereas its structural configuration requires further optimization for non-pelleted vegetable seeds.