| Author | Ismail, Syed Mohideen Md. |
| Call Number | AIT Diss. no.AE-82-01 |
| Subject(s) | Tractors--Performance
|
| Note | A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Engineering, School of Environment, Resources and Developmemt |
| Publisher | Asian Institute of Technology |
| Series Statement | Dissertation ; no. AE-82-01 |
| Abstract | The performance of a draft control system was compared with a slip control system and a combined 'slip and draft' control system. For the draft control, a commercial draft control system was used. A microcomputer controlled electro hydraulic system fitted to the tractor was used in slip control and 'slip and draft' control. The travel speed and depth were measured using a fifth wheel. Transducers were developed for measuring draft and torque. A data processing system was developed to process and store the field data. Tests were conducted with the three systems individually to find out the best parameter selection for each system. The parameters considered were the set levels of draft and slip, dead band, frequency of draft control, frequency of slip control, rate of lowering and rate of lifting, speed and moisture content of the soil. A direct comparison test was conducted with all the three systems tested using their best setting of parameters. The draft control system controlled the draft (at high set draft levels only) and depth better than the other two systems. The 'slip and draft' control system resulted in best overall control of draft, depth and slip. The efficiency of the 'slip and draft' control was higher than the other two systems. The efficiency of slip control system was in between the draft control and the 'slip and draft' control systems. |
| Year | 1982 |
| Corresponding Series Added Entry | Asian Institute of Technology. Dissertation ; no. AE-82-01 |
| Type | Dissertation |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Agricultural and Food Engineering (AE) |
| Chairperson(s) | Singh, Gajendre;Gee-Clough, David; |
| Examination Committee(s) | Stroppel, Alfred;Malik, G,M,;Koike, Masayuki; |
| Degree | Thesis (Ph.D.) - Asian Institute of Technology, 1982 |