| 摘要 |
<p>A flow control valve includes a housing that includes a fluid inlet, a fluid outlet, a first work port and a second work port. The housing defines a spool bore and a pilot spool bore. A main stage spool is disposed in the spool bore. A pilot stage spool is disposed in the pilot spool bore. The pilot stage spool is in selective fluid communication with the main stage spool. A microprocessor includes a controller having a position controller module, a velocity transform module, and a dynamic offset module. The controller is configured to implement a training process, and to compensate for viscosity changes in the working fluid based on data obtained during the training process. Outputs of the controller are communicated to the pilot stage spool.</p> |
