Abstract
The designing of speed ratio follow-up control system of hydro-mechanical transmission is given. The speed ratio characteristics of geometric type hydro-mechanical transmission is analyzed, and the model of speed adjusting system of hydro-mechanical transmission is built up. By analyzing the frequency behavior, the model of hydro-mechanical transmission is simplified and based on it, the control algorithm is designed. Finally, the speed ratio follow-up control and the performance of engine speed adjustment with speed ratio follow-up system were tested. Test results showed that there does not exist steady-state error when following the step speed ratio, but steady-state error do exist when following ramp speed ratio, and by following the speed ratio of hydro-mechanical transmission, the desired speed of engine can be achieved.
| Original language | English |
|---|---|
| Pages (from-to) | 481-485 |
| Number of pages | 5 |
| Journal | Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology |
| Volume | 28 |
| Issue number | 6 |
| Publication status | Published - Jun 2008 |
Keywords
- Control of engine speed
- Frequency behavior
- Hydro-mechanical transmission
- Speed ratio follow-up control