RAMPING SUBSYSTEM FOR A MACHINE WITH A DUAL PATH ELECTRONICALLY CONTROLLED HYDROSTATIC TRANSMISSION

摘要

A ramping subsystem of a control system for a dual path electronically controlled hydrostatic transmission is used to modify the commanded rate of change of pump and motor acceleration, deceleration and direction change command (performed to command machine motion from forward to reverse or vice versa) in order to achieve desired machine performance and operator feel. Pump and motor acceleration, deceleration and direction change command rates are then further modified using scaling tables based on selected maximum machine speed using operator input device.

主权项

1. A method for controlling a machine with a dual path electronically controlled hydrostatic transmission, the method comprising:
providing a machine having an engine and an electronically controlled hydrostatic transmission, the electronically controlled hydrostatic transmission including an input device, a first drive system and a second drive system, each of the first drive system and the second drive system having at least one pump and at least one motor, the input device providing a speed setting value for the first drive system and the second drive system; generating at least one command for the at least one pump and the at least one motor of each of the first drive system and the second drive system with a controller; determining a change in the at least one generated command using the controller; determining a ramping parameter based on the speed setting value provided by the input device; applying the determined ramping parameter to the at least one generated command to generate at least one modified command in response to the determination of a change in the at least one generated command; and applying the at least one modified command to the at least one pump and the at least one motor of each of the first drive system and the second drive system.