Hydrostatically driven vehicle and method therefor

A hydrostatically driven vehicle comprising:

• at least one wheel;
• at least one propel motor connected to said at least one wheel, said at least one propel motor operating at a motor speed and along a motor direction;
• a variable displacement pump, said pump being adapted to circulate a flow of propel fluid at a flow rate through said motor, the pump including a rotating swashplate having an axis of rotation, said swashplate being adapted to operate at selective angles with respect to said axis of rotation, said angle of the swashplate dictating said flow rate of the propel fluid, the flow rate of the propel fluid propelling the vehicle at a travel speed;
• a control device adapted to change said angle of the swashplate;
• an electronic controller;
• a system sensor disposed to measure at least one of said angle at which the swashplate operates and said motor speed and direction, the system sensor operably connected to said electronic controller and adapted to relay an actual signal to said controller during operation of the vehicle;
• a control sensor disposed to measure a displacement of said control device, said control sensor operably connected to the electronic controller and adapted to relay a desired signal to said controller during operation of the vehicle;
• the electronic controller adapted to receive said actual signal and said desired signal, said electronic controller being adapted to:
• calculate a difference between the actual signal and the desired signal;
• compare the difference with a threshold value;
• initiate a timer when the difference exceeds the threshold value;
• increment a time value with the timer while the difference exceeds the threshold value;
• compare the time value with a predetermined time limit;
• and
• arrest motion of the vehicle when the time value is at least equal to the predetermined time limit and the difference exceeds the threshold value.