Abstract: A branch line branching from midway of a hydraulic conduit or each of actuator side oil passages to connect a bottom side oil chamber of a hoist cylinder to a tank is provided to the hydraulic conduit or each of the actuator side oil passages. A manual operation valve for variably adjusting the flow rate in accordance with the operation of a lever handle is provided in the branch line. Maintenance work is performed with an engine stopped in this state. Subsequently, when a vessel is lowered onto a vehicle body, hydraulic oil can be discharged through the branch line from the bottom side oil chamber of the hoist cylinder to the tank by opening the manual operation valve, so that the hoist cylinder can be automatically contracted.

Abstract: A motor controlling device for mounting on a vehicle, which includes a controller capable of controlling a DC brushless motor at high response and high accuracy. The motor controlling device for mounting on the vehicle to drive the DC brushless motor comprises a main control section (120) for calculating a torque command for the motor, and a current control calculation section (140) constituted by a module or a dedicated LSI independent of the main control section (120). The current control calculation section (140) converts the coordinates of a current of the DC brushless motor into a d-axis direction, i.e., a direction of magnetic flux of a motor rotor, and into a q-axis direction orthogonal to the d-axis direction, and feedback-controls a current in the d-axis direction and a current in the q-axis direction separately.

Abstract: [OBJECT] To provide a hydraulic drive system for a dump truck, which can prevent an excessive increase in engine rotation speed upon operation of a truck body. [MEANS FOR ACHIEVING THE OBJECT] A hydraulic drive system is provided with a generator 8 for outputting electricity corresponding to a rotation speed of an engine 7, an electric motor 11 drivable responsive to the electricity from the generator 8, hydraulic pumps 12a, 12b drivable by the electric motor 11, truck-body elevating cylinders 6 for pivoting a truck body 5 in an up-and-down direction, and a stroke detector 14 for detecting a stroke of the control apparatus of the truck-body elevating cylinders 6, and is also provided with a controller 19 for performing control of engine rotation speed.

Abstract: To provide a motor control apparatus that uses an inverter to drive an AC motor and hybrid automotive control apparatus adapted to drive an AC motor by use of an inverter while reducing torque pulsations during switching from PWM driving to rectangular-wave driving. The motor control apparatus 100 has a PWM driving mode in which to input a PWM signal to the inverter 8 and perform PWM driving of the AC motor 4, and a rectangular-wave driving mode in which to input a rectangular-wave signal to the inverter 8 and perform rectangular-wave driving of the AC motor 4. For switching from the PWM driving mode to the rectangular-wave driving mode, a driving-pulse switching block 140 performs the switching process within a maximum pulse-width range of high-level or low-level pulses developed in the PWM driving mode.

Abstract: [Problems] To simplify switching control of a directional control valve and to simplify the structure of a directional control valve for controlling operation of a hoist cylinder. [Means for Solving Problems] In a hydraulic drive device for vertical pivoting movement of a load carrying platform, a first directional control valve (10) has only three switchover positions that are a neutral position (10A) relating to operation of stopping and holding a load carrying platform, a switching position (10B) relating to operation of lifting the load carrying platform, and a switch over position (10C) relating to operation of forced lowering of the load carrying platform.

Abstract: An object of the present invention is to provide a controller of a field winding type synchronous motor that can stably output torque even if the d-axis current pulsates by reducing torque pulsation without causing fluctuations in the magnetic flux acting on the torque, and also provide an electric drive system, an electric four wheel driving vehicle, and a hybrid automobile. A motor control unit 100 performs control so that a desired torque be generated from a field winding type motor 20 having a field winding 22f on the rotor. Based on a current Id flowing in the d-axis direction out of the currents flowing in a stator winding 22a of the field winding type motor 20, the motor control unit 100 calculates an induced voltage Vf2 being induced in the field winding 22f and compensates a field voltage Vf of the field winding based on the induced voltage Vf2, thus suppressing pulsation of the field current flowing in the field winding of the field winding type motor 20.

Abstract: An object of the present invention is to provide a controller for an electric four-wheel-drive vehicle, which is capable of minimizing torque changes and consuming excessive power even when the excessive power is generated by a generator. A motor control unit causes an AC motor to generate desired torque by controlling an inverter. When the power generated by the generator exceeds the power consumed by the inverter and AC motor to generate excessive power, a current command determination unit in the motor control unit consumes the excessive power by increasing a loss in the AC motor.

Abstract: A control apparatus for controlling a rotational electric machine and a driving apparatus for a vehicle that include an AC motor that rotates wheels and is driven by a power supplied from a battery, an instant variation detecting unit provided in a motor controller that detects a instant variation of a current or voltage of the battery, and a current command operating unit that changes a current command to be sent to the AC motor such that an internal loss of the AC motor is increased by using an internal-loss-increase-use Id·Iq table.

Abstract: An object of the present invention is to provide a generator control unit having improved voltage response in a system which is not provided with a battery in a DC output unit. In order to control the DC voltage of the DC voltage output terminal in a state where an electric load is connected to the DC voltage output terminal of a power generation unit, a PWM signal generation unit 429 generates a field voltage to be applied to a field winding terminal of the power generation unit. A feedback control unit 422 calculates a field voltage command value to be given to the PWM signal generation unit 429. Further, the feedback control unit 422 includes a PT control unit 423 which calculates a voltage deviation between a DC voltage detection value and a DC voltage command value to generate the field voltage command value through a PI operation based on the voltage deviation.

Abstract: An electric four-wheel drive vehicle and a control unit for the same, which can be applied to cars of class having larger displacements than the class to which the electric four-wheel drive vehicle equipped with the DC motor is applied, without increasing the cost over that of the known mechanical four-wheel drive vehicle. Front wheels of the vehicle are driven by an engine, and rear wheels are driven by an AC motor. A generator is driven by a rotating force of the engine to output DC power. An inverter converts the DC power outputted from the generator to AC power. A control unit controls the generator such that energy Pm required for driving the AC motor is outputted from the generator.

Abstract: As a boosting-type motor driving device using no reactor, a motor driving device capable of controlling boosting operation and motor driving at the same time is provided, and an automobile using the motor driving device is also provided. The motor driving device is used for driving a motor with a double-winding structure having a first set of three-phase windings and a second set of three-phase winding which are wound over a stator, and includes first and second inverters, which are connected respectively to the first set of three-phase windings and the second set of three-phase windings, thereby controlling the first and second inverters to control a driving force of the motor with the double-winding structure. The first and second inverters have positive and negative terminals which are connected respectively in common to a high-voltage battery.

Abstract: The present invention provides a controller and driving apparatus for an electric vehicle, which enables a motor to steadily output torque even when there is an increase in the rotation speed of an internal combustion engine that drives a generator. A motor control unit includes a voltage/current command generator F10. The voltage/current command generator F10 includes a base command determination unit, which determines a base command value for the output voltage of the generator and base command values for d- and q-axis currents that drive an AC motor, and power generation operating point change means, which changes the command values that are output from the base command determination unit. When an operating point of the generator approaches an unstable region where the generator unsteadily operates, the power generation operating point change means changes the generator's operating point to position it within a stable region.

Abstract: An object of the present invention is to further improve the running performance of the vehicle. This object can be solved by providing a rollback controller 150 used for controlling the operation of an inverter 400 to control an armature current of the motor 500 in a motor control equipment 120 so that, when a rollback is detected and a rollback speed exceeds a rollback speed limit, the rollback is maintained and the rollback speed is limited by the driving force of the motor 500, with the rollback speed limit value as a target speed recognized.

Abstract: Compounds of formula (I): wherein n, R1, R2, R3 and R7 are disclosed herein, are useful in treating disease-states associated with nuclear receptor activity. Pharmaceutical compositions comprising and methods of using said compounds are also disclosed herein.

Abstract: A motor controlling device for mounting on a vehicle, which includes a controller capable of controlling a DC brushless motor at high response and high accuracy. The motor controlling device for mounting on the vehicle to drive the DC brushless motor comprises a main control section (120) for calculating a torque command for the motor, and a current control calculation section (140) constituted by a module or a dedicated LSI independent of the main control section (120). The current control calculation section (140) converts the coordinates of a current of the DC brushless motor into a d-axis direction, i.e., a direction of magnetic flux of a motor rotor, and into a q-axis direction orthogonal to the d-axis direction, and feedback-controls a current in the d-axis direction and a current in the q-axis direction separately.

Abstract: The present invention provides a controller and driving apparatus for an electric vehicle, which enables a motor to steadily output torque even when there is an increase in the rotation speed of an internal combustion engine that drives a generator. A motor control unit includes a voltage/current command generator F10. The voltage/current command generator F10 includes a base command determination unit, which determines a base command value for the output voltage of the generator and base command values for d- and q-axis currents that drive an AC motor, and power generation operating point change means, which changes the command values that are output from the base command determination unit. When an operating point of the generator approaches an unstable region where the generator unsteadily operates, the power generation operating point change means changes the generator's operating point to position it within a stable region.

Abstract: Compounds of formula (I): wherein n, R1, R2, R3 and R7 are disclosed herein, are useful in treating disease-states associated with nuclear receptor activity. Pharmaceutical compositions comprising and methods of using said compounds are also disclosed herein.

Abstract: An object of the present invention is to provide a controller for an electric four-wheel-drive vehicle, which is capable of minimizing torque changes and consuming excessive power even when the excessive power is generated by a generator. A motor control unit causes an AC motor to generate desired torque by controlling an inverter. When the power generated by the generator exceeds the power consumed by the inverter and AC motor to generate excessive power, a current command determination unit in the motor control unit consumes the excessive power by increasing a loss in the AC motor.

Abstract: As a boosting-type motor driving device using no reactor, a motor driving device capable of controlling boosting operation and motor driving at the same time is provided, and an automobile using the motor driving device is also provided. The motor driving device is used for driving a motor with a double-winding structure having a first set of three-phase windings and a second set of three-phase winding which are wound over a stator, and includes first and second inverters, which are connected respectively to the first set of three-phase windings and the second set of three-phase windings, thereby controlling the first and second inverters to control a driving force of the motor with the double-winding structure. The first and second inverters have positive and negative terminals which are connected respectively in common to a high-voltage battery.

Abstract: An electric four-wheel drive vehicle includes: an internal combustion engine; a generator for outputting DC electrical power; an inverter for converting DC electrical power, output from the generator, into AC electrical power; and an AC electric motor, which is driven by the inverter, for driving rear wheels. An electric motor controller controls the inverter, the AC electric motor, and the generator, according to torque instructions from a vehicle. Furthermore, in a case that the output of the AC electric motor becomes negative, and excess electrical energy is generated, the electric motor controller controls the current applied to said AC electric motor such that the loss in said AC electric motor exceeds the negative output of said AC electric motor. This enables the AC electric motor to absorb excess electrical energy in the form of thermal loss.