Oil Hydraulic Control of Rotary Tillage (2)

Consideration and Improvement of Control System

Abstract

The consideration and improvement of the hydraulic control system on the rotary tillage in previous report are performed using an analog computer.
As a result of the stability analysis of this system, the limit cycle is prevented when the amplified link ratio 1 is small. The control valve with on-off action deteriorates the stability and deviation of system, but these characteristics are also improved when the link ratio is small.
Another method to get the good stability and deviation is to decrease the oil flow into the operating cylinder. But in this case, the response of system becomes more slowly.