摘要:
A machine includes an engine and a governor operable to control an operating speed of the engine along a first droop curve such that the operating speed is a function of an operating load of the engine. The first droop curve includes a first region that defines a first slope, a second region that defines a second slope different from the first slope, and a transition point located at an intersection of the first region and the second region. The machine further includes a controller in communication with the governor. The controller is configured to determine an average operating load of the engine over a predetermined time period, adjust the location of the transition point based at least in part on the average operating load to create a second droop curve, and operate the engine based on the second droop curve.
摘要:
A system includes a retractable mounting assembly including a frame assembly. The frame assembly includes at least one substantially rigid frame member. In some embodiments, the frame assembly is configured to facilitate movement of an agricultural soil analyzer from a first position longitudinally proximate to a rear end of an agricultural implement to a second position longitudinally rearward of the first position, relative to a direction of travel of the agricultural implement, the frame assembly is configured to position the agricultural soil analyzer above a surface of an agricultural field while in the second position, and each of the at least one substantially rigid frame member is formed from a non-electrically interactive material.
摘要:
A method and system for controlling operation of a tractor and/or agricultural implement towed by the tractor is disclosed. A vibration sensor is mounted to the agricultural implement to detect the magnitude of vibration, or bounce, on the agricultural implement. Because the magnitude of the vibration is a function of several operating parameters including, but not limited to, the speed at which the tractor is travelling and the downward pressure applied to the agricultural implement, one or more additional sensors are provided to monitor these operating parameters. Each of the sensors generates a feedback signal and transmits it to the controller. The controller is configured to generate an reference signal to control an actuator as a function of the magnitude of vibration and the measured operating parameter. The actuator receiving the reference signal is configured to control operation of the tractor or agricultural implement to reduce the magnitude of vibration.
摘要:
The apparatus is an automatic velocity control system for an agricultural machine. Three feedback circuits are used to increase reliability and repeatability of the apparatus despite variations in load and ground conditions and non-linear responses of control components. A solenoid current sensor supplies a feedback signal to control a current controller for solenoids controlling a hydraulic valve, a hydraulic cylinder position sensor provides a feedback signal to counteract the non-linearity of the hydraulic valve controlling the hydraulic cylinder, and wheel speed sensors supply vehicle speed signals to be compared to the signal from the operator's speed control. A microprocessor processes the sensor signals to maintain the desired velocity.
摘要:
The apparatus is an automatic velocity control system for an agricultural machine. Three feedback circuits are used to increase reliability and repeatability of the apparatus despite variations in load and ground conditions and non-linear responses of control components. A solenoid current sensor supplies a feedback signal to control a current controller for solenoids controlling a hydraulic valve, a hydraulic cylinder position sensor provides a feedback signal to counteract the non-linearity of the hydraulic valve controlling the hydraulic cylinder, and wheel speed sensors supply vehicle speed signals to be compared to the signal from the operator's speed control. A microprocessor processes the sensor signals to maintain the desired velocity.
摘要:
An agricultural machine having drivable members for working the soil or crop or both. Either the agricultural machine or a tractor connected therewith has a storage medium which may be a computer memory in which a desired relationship between the rpm of the working member and the driving velocity of the agricultural machine is stored. The agricultural machine includes a governor or control mechanism for regulating, on the basis of the relationship stored in the storage medium, the rpm of the working member in dependence on the agricultural machine's velocity. In this manner, the optimum rpm for the driven working member can be set for any driving velocity of the machine to maximize the results obtained by the working member in improved soil or crop conditions or both.
摘要:
A tractor/implement combination is controlled through the use of real-time data on the true draft force generated by engagement of an implement with the ground. A method of controlling a tractor/implement combination includes obtaining and storing calibration data on the torque generated at the tractor flywheel, while the implement is disengaged from the ground, including such data the rolling resistance and frictional/parasitic losses between the flywheel and driven wheel axle of the tractor. During subsequent operation of the tractor/implement combination, the calibration data is subtracted from instantaneous data to generate a signal indicative of the implement draft force. The draft force signal may be factored to take account of the tractor power train ratio and the rolling radius of the tractor tires. The method allows generation of accurate draft force data, regardless of the nature and mounting location of the implement.
摘要:
A draft vehicle, especially for agricultural use, having an engine, preferably of the fuel injection type, and driving wheels and a transmission connecting the engine to the wheels and including a torque converter. Measuring elements measure the circumferential speed of the driving wheels, the speed of the vehicle, the speed of the engine, the rate of fuel supply to the engine, the torque supplied to the converter and the torque supplied by the converter. The thus measured values are compared to obtain values representative of the slip of the driving wheels and the efficiency of the engine and the efficiency of the converter. Indicators supplied with the obtained values are disposed within the view of the vehicle operator.