Abstract: A cargo handling controller includes a rotation speed setting unit, an engine control unit, a memory, a rotation speed detection unit, a deviation calculator, an assistance amount setting unit, and a generator-motor control unit. The deviation calculator calculates a deviation of a feedback control rotation speed, which is determined from a target engine rotation speed stored in the memory a predetermined time earlier, and an actual rotation speed of the generator-motor, which is detected by the rotation speed detection unit. The assistance amount setting unit obtains a generator-motor assistance amount in accordance with the deviation. The generator-motor control unit sends a drive signal that is in accordance with the generator-motor assistance amount to the generator-motor.

Abstract: A drive controller for a cargo handling vehicle including an engine, a generator motor, a cargo handling pump, a cargo handling actuator, a travel motor, and a battery. The drive controller includes an engine control unit, a rotation speed detection unit, a deviation calculation unit, and a power generation control unit. The engine control unit controls the engine in accordance with a command rotation speed. The rotation speed detection unit detects an actual rotation speed of the engine. The deviation calculation unit calculates a rotation speed deviation of the command rotation speed for the engine and the actual rotation speed of the engine. The power generation control unit controls the generator motor in accordance with the rotation speed deviation so as to limit power generated by the generator motor to drive the travel motor.

Abstract: A power supply control apparatus for controlling a power supply unit including a battery and a load is provided. The power supply control apparatus includes a main relay and a ground relay, a pre-charge relay, an inrush current limiting resistor, a first relay control section, and a time measurement section. The main relay and the ground relay are connected between the battery and the load. The pre-charge relay is connected in parallel with one of the main relay and the ground relay. The inrush current limiting resistor is connected in series with the pre-charge relay, and limits an inrush current from the battery to the load. The first relay control section temporarily turns ON the pre-charge relay and turns ON the main relay and the ground relay upon receiving a power supply connection request from the outside, and turns OFF the main relay and the ground relay upon receiving a power supply interruption request from the outside.

Abstract: A travel controller for a hybrid forklift includes an acceleration command reference value generation unit, an acceleration limit value generation unit, an acceleration command value determination unit, and a travel motor control unit. The acceleration command reference value generation unit obtains an acceleration command reference value. The acceleration limit value generation unit obtains an acceleration limit value that limits an acceleration command value to a range that prevents discharge power of the battery from exceeding a battery discharge power limit value. The acceleration command value determination unit determines the acceleration command value for the travel motor from the acceleration command reference value and the acceleration limit value. The travel motor control unit controls the travel motor with the acceleration command value.

Abstract: A hybrid industrial vehicle including an engine, generator motor, battery, and a travel motor. A first generated power computation unit computes a deceleration rate based required generated power based on the travel power and charge power of the battery. A second generated power computation unit computes an actual power based required generated power based on used power used by the travel motor and the charge power of the battery. A generated power control unit controls the generator motor so that the generated power of the generator motor becomes equal to a total generated power determined from the deceleration rate based required generated power and actual power based required generated power. An engine rotation speed control unit controls rotation speed of the engine to be greater than or equal to a required cargo handling engine rotation speed.

Abstract: A hybrid industrial vehicle including an engine, generator motor, battery, and a travel motor. A first generated power computation unit computes a deceleration rate based required generated power based on the travel power and charge power of the battery. A second generated power computation unit computes an actual power based required generated power based on used power used by the travel motor and the charge power of the battery. A generated power control unit controls the generator motor so that the generated power of the generator motor becomes equal to a total generated power determined from the deceleration rate based required generated power and actual power based required generated power. An engine rotation speed control unit controls rotation speed of the engine to be greater than or equal to a required cargo handling engine rotation speed.

Abstract: A travel controller for a hybrid forklift includes an acceleration command reference value generation unit, an acceleration limit value generation unit, an acceleration command value determination unit, and a travel motor control unit. The acceleration command reference value generation unit obtains an acceleration command reference value. The acceleration limit value generation unit obtains an acceleration limit value that limits an acceleration command value to a range that prevents discharge power of the battery from exceeding a battery discharge power limit value. The acceleration command value determination unit determines the acceleration command value for the travel motor from the acceleration command reference value and the acceleration limit value. The travel motor control unit controls the travel motor with the acceleration command value.

Abstract: A power supply control apparatus for controlling a power supply unit including a battery and a load is provided. The power supply control apparatus includes a main relay and a ground relay, a pre-charge relay, an inrush current limiting resistor, a first relay control section, and a time measurement section. The main relay and the ground relay are connected between the battery and the load. The pre-charge relay is connected in parallel with one of the main relay and the ground relay. The inrush current limiting resistor is connected in series with the pre-charge relay, and limits an inrush current from the battery to the load. The first relay control section temporarily turns ON the pre-charge relay and turns ON the main relay and the ground relay upon receiving a power supply connection request from the outside, and turns OFF the main relay and the ground relay upon receiving a power supply interruption request from the outside.

Abstract: A drive controller for a cargo handling vehicle including an engine, a generator motor, a cargo handling pump, a cargo handling actuator, a travel motor, and a battery. The drive controller includes an engine control unit, a rotation speed detection unit, a deviation calculation unit, and a power generation control unit. The engine control unit controls the engine in accordance with a command rotation speed. The rotation speed detection unit detects an actual rotation speed of the engine. The deviation calculation unit calculates a rotation speed deviation of the command rotation speed for the engine and the actual rotation speed of the engine. The power generation control unit controls the generator motor in accordance with the rotation speed deviation so as to limit power generated by the generator motor to drive the travel motor.

Abstract: A cargo handling controller includes a rotation speed setting unit, an engine control unit, a memory, a rotation speed detection unit, a deviation calculator, an assistance amount setting unit, and a generator-motor control unit. The deviation calculator calculates a deviation of a feedback control rotation speed, which is determined from a target engine rotation speed stored in the memory a predetermined time earlier, and an actual rotation speed of the generator-motor, which is detected by the rotation speed detection unit. The assistance amount setting unit obtains a generator-motor assistance amount in accordance with the deviation. The generator-motor control unit sends a drive signal that is in accordance with the generator-motor assistance amount to the generator-motor.

Abstract: In estimating a traveling speed pattern on the basis of the past traveling data, the present invention aims at making it possible to efficiently estimate the traveling speed pattern without referring to an enormous volume of the past traveling data, and preventing the precision of estimation from deteriorating due to a decrease in the number of the available past data. To achieve this object, a vehicle traveling speed pattern estimation device of the present invention comprises traveling information storing means for storing traveling data and traveling environment data as mutually associated data, candidate traveling speed pattern generating means for generating a candidate traveling speed pattern on the basis of the traveling data, and estimated traveling speed pattern outputting means for extracting a candidate traveling speed pattern matching current traveling environment data and outputting an estimated traveling speed pattern for a route to be followed from now on.