摘要:
A working vehicle has improved operability and working efficiency during loading. A loading operation detector detects the start of a loading operation based on at least two of the following: whether a boom lever has been operated in its raise direction; whether a boom is in an attitude set in advance; whether the boom angle is less than an upper limit; whether a speed ratio when a brake is OFF is greater than or equal to a predetermined value; whether a predetermined speed stage is set; whether the traveling range has been changed from reverse to forward; and whether the angular velocity of the boom is greater than or equal to a predetermined value. By increasing the discharge amount of a loader pump, and/or by supplying hydraulic fluid to a boom cylinder from a switch pump, a hydraulic fluid amount increase controller supplies more hydraulic fluid to the boom.
摘要:
The construction machine includes a propulsion device, the working equipment, and a controller that controls the propulsion device. The controller performs attitude determination of determining whether or not the present attitude of the working equipment corresponds to a predetermined attitude, performs propulsion determination of determining whether or not the present propulsive operation of the propulsion device corresponds to a predetermined propulsive operation performed while performing a predetermined construction task that applies an over load to the working equipment, performs driving force determination of determining whether or not the magnitude of the present propelling force corresponds to a predetermined magnitude at which an over load is applied to the working equipment, and reduces the propelling force outputted from the propulsion device when the results of attitude determination, propulsion determination, and driving force determination are affirmative.
摘要:
An engine-driven machine having plural kinds of load devices driven by an engine is provided with a load torque calculation unit that calculates a present load torque applied to the engine from a load device of at least one kind, and a control unit that performs variable control of a maximum output characteristic of the engine in accordance with the calculated load torque, such that a maximum output torque that can be outputted by the engine at the present engine revolution speed becomes a maximum output torque that is equal to or greater than the calculated load torque.
摘要:
A working vehicle in which an output from an engine is distributed to a traveling system and a hydraulic device system includes a loading operation detection unit that detects whether a loading operation using a work equipment is being performed, a clutch contained in the traveling system and connected to a distributor, a maximum output characteristic control unit that selects a second engine maximum output characteristic from among first and second maximum output characteristics when it is detected that the loading operation is being performed, and a hydraulic oil amount control unit that decreases a clutch pressure of the clutch when it is detected that the loading operation is being performed. In the first engine maximum output characteristic, a maximum output torque in a predetermined engine revolution speed range is lower than that in the second engine maximum output characteristic.
摘要:
According to an embodiment, an analog-to-digital converter includes a voltage generating unit, and a plurality of comparators. The voltage generating unit is configured to divide a reference voltage by a plurality of variable resistors to generate a plurality of comparative voltages. Each of the plurality of comparator is configured to compare any one of the plurality of comparative voltages with an analog input voltage and output a digital signal based on a result of a comparison between the comparative voltage and the analog input voltage. Each of the plurality of variable resistors includes a plurality of variable resistive elements that are connected in series, and each of the plurality of variable resistive elements has a resistance value that is variably set according to an external signal.
摘要:
A pass transistor circuit according to an embodiment includes: a first input/output terminal connected to a first signal line; a second input/output terminal connected to a second signal line; a first device having a first terminal connected to a first power supply and a second terminal; a second device having a third terminal connected to the second terminal and a fourth terminal connected to a second power supply; a first transistor having one of source/drain connected to the second terminal, a gate receiving a first control signal; and a second transistor having a gate connected to the other one of source/drain of the first transistor, one of source/drain connected to the first input/output terminal, and the other one of source/drain connected to the second input/output terminal. One of the first and second devices is a nonvolatile memory device, the other one of the first and second devices is a MOSFET.
摘要:
A working vehicle of the present invention achieves more stabilized constant speed traveling. A vehicle speed control section 20A of a controller 2 calculates a target drive force required for constant speed traveling on the basis of a preset standard traveling resistance (S1). And, on the basis of an output rotational speed (S2) and the target drive force (S1) of a torque converter 14, the vehicle speed control section 20A determines a target input rotational speed (S3) to be inputted to the torque converter 14, and sets a clutch pressure (S5) so as to eliminate a difference between the target input rotational speed and an actual input rotational speed (S4). A standard traveling resistance correction section 20B corrects a standard traveling resistance according to state of a road surface, long term change of components, and so on. Due to this, it is possible to perform stabilized constant speed traveling.
摘要:
A magnetoresistive effect element includes a first ferromagnetic layer, Cr layer, Heusler alloy layer, barrier layer, and second ferromagnetic layer. The first ferromagnetic layer has the body-centered cubic lattice structure. The Cr layer is formed on the first ferromagnetic layer and has the body-centered cubic lattice structure. The Heusler alloy layer is formed on the Cr layer. The barrier layer is formed on the Heusler alloy layer. The second ferromagnetic layer is formed on the barrier layer.
摘要:
A pass transistor circuit according to an embodiment includes: a first input/output terminal connected to a first signal line; a second input/output terminal connected to a second signal line; a first device having a first terminal connected to a first power supply and a second terminal; a second device having a third terminal connected to the second terminal and a fourth terminal connected to a second power supply; a first transistor having one of source/drain connected to the second terminal, a gate receiving a first control signal; and a second transistor having a gate connected to the other one of source/drain of the first transistor, one of source/drain connected to the first input/output terminal, and the other one of source/drain connected to the second input/output terminal. One of the first and second devices is a nonvolatile memory device, the other one of the first and second devices is a MOSFET.
摘要:
Certain embodiments provide a spin memory including a memory cell including a ferromagnetic stacked film that has a stacked structure in which a first ferromagnetic layer, a first nonmagnetic layer, a second ferromagnetic layer, a second nonmagnetic layer, and a third ferromagnetic layer are stacked in this order or reverse order, the third ferromagnetic layer and the second ferromagnetic layer being antiferromagnetically exchange-coupled via the second nonmagnetic layer. The ferromagnetic stacked film includes a current path in which a first and second write currents flow from the first ferromagnetic layer to the third ferromagnetic layer to write a first and second magnetization states into the first ferromagnetic layer respectively, and the second write current is higher than the first write current.