| 摘要 |
<p>An auto-adjust apparatus (10) adjusts a vibration isolator (12) to help accommodate varying weight loads and other effects which can cause the isolator (12) to go out of adjustment, such as variations caused by changes in ambient temperature and creep of the isolator's main support spring (20). A small secondary spring (60) is positioned in parallel with the main support spring (20) of the isolator (12) and is precompressed such that its compression increases the load on the main support spring (20) by a small amount. An increase in compression of this secondary spring (60) will cause an increase in the load of the main support spring (20). Similarly, a decrease in the compression of the secondary spring (60) will cause a decrease in the load of the main spring (20). Sensors (70-76) for sensing a deviation in the equilibrium position of the object relative to the base (24) from its optimum equilibrium position are provided to generate an electrical signal indicating such deviations. A control system (66) for correcting the deviation of the equilibrium position of the object from the optimum equilibrium position adjusts the compression on the secondary spring (60) as may be required.</p> |
