Electronic pressure limiting for dual path systems
A pressure limiting system for a dual path machine wherein an input propel command from a propel device is scaled based upon the largest detected pressure in a hydraulic system to determine a modified propel command. Also, response time is adjusted within an electrical control system based upon the type of input propel command signal received.
1. A method of electronically limiting pressure and providing pressure sensitive overrides for a dual path machine, comprising the steps of:
transmitting an input propel command from a propel device to a computer of an electronic control system;
transmitting signals from pressure sensors from a hydraulic system;
determining a modified propel command using a processor and software from the computer by scaling the input propel command based upon the largest pressure sensor signal received; and
adjusting an actuator on a pump based upon the modified propel command; and
determining a type of the input propel command and adjusting a response time of the hydraulic system based on the determination;
wherein response time is decreased when the input propel command is determined to be a speed command.
2. The method of claim 1 wherein electronic hydraulic valves are connected to the actuators and are adapted to vary speed ratios and direction of operation on the pump.
3. The method of claim 1 wherein the input control command includes a steering command and a speed command.
4. The method of claim 1 wherein the step of scaling is applied in conjunction with a control system.
5. The method of claim 1 wherein output from the computer is commanded to pump actuators and motors.
6. The method of claim 1 further comprising the step of determining whether the input propel command is a steering command or a speed command.
7. The method of claim 6 wherein response time is increased when the input propel command is determined to be a steering command.
8. A method of electronically limiting pressure and providing pressure sensitive overrides for a dual path machine, comprising the steps of:
transmitting an input propel command from a propel device to a computer of an electronic control system, wherein the input control command includes a steering command and a speed command;
transmitting signals from pressure sensors from a hydraulic system;
determining a modified propel command using a processor and software from the computer;
adjusting an actuator on a pump based upon the modified propel command; and
determining whether the input propel command is a steering command or a speed command.
9. A method of electronically limiting pressure and providing pressure sensitive overrides for a dual path machine, comprising the steps of:
transmitting an input propel command from a propel device to a computer of an electronic control system;
transmitting signals from pressure sensors from a hydraulic system;
determining a modified propel command using a processor and software from the computer;
adjusting an actuator on a pump based upon the modified propel command; and
determining whether the input propel command is a steering command or a speed command and adjusting response time of the hydraulic system based on the determination.