Abstract: A hybrid system includes a hybrid controller which controls the speed and torque of an engine based on the operated level of an accelerator pedal within a first range where the power generation efficiency of the system becomes equal to or higher than a preset power generation efficiency to allow the engine to operate at an engine operating point when the SOC detected by an SOC sensor is equal to or higher than an HEV low SOC, and which controls the speed and torque of the engine based on the operated level of the accelerator pedal within a second range where the power generated by a power generator motor becomes larger than that of the first range to allow the engine to operate at the engine operating point when the SOC detected by the SOC sensor is lower than the HEV low SOC.

Abstract: A vehicle drive motor control system is provided, which, when a vehicle drive motor is in a locked state, may urge a driver to make a switch from actuation of an accelerator to actuation of a brake, thereby preventing thermal damage to coils inside the motor. The vehicle drive motor control system is capable of, when a vehicle drive motor is in a locked state as a result of actuating an accelerator, making the vehicle slowly move backward (or providing other stimulus to the driver) by decreasing a maximum drive torque value. This may effectively cause the driver to make the switch from actuation of the accelerator to actuation of the brake.

Abstract: A hybrid system includes a hybrid controller which controls the speed and torque of an engine based on the operated level of an accelerator pedal within a first range where the power generation efficiency of the system becomes equal to or higher than a preset power generation efficiency to allow the engine to operate at an engine operating point when the SOC detected by an SOC sensor is equal to or higher than an HEV low SOC, and which controls the speed and torque of the engine based on the operated level of the accelerator pedal within a second range where the power generated by a power generator motor becomes larger than that of the first range to allow the engine to operate at the engine operating point when the SOC detected by the SOC sensor is lower than the HEV low SOC.

Abstract: A control apparatus for a series hybrid vehicle includes an engine, a generator, a battery, and a drive motor increases an engine rpm according to an accelerator opening while maintaining a high fuel efficiency to give a driver an acceleration feeling because of the increased engine sound. A control means determines a target engine rpm based on an accelerator opening detected by an accelerator opening detecting means, and sets as the target engine rpm, an engine rpm at which a power generation efficiency is maximum when the accelerator opening detected by the accelerator opening detecting means is minimum, and sets as the target engine rpm an engine rpm at which an output is maximum when the accelerator opening detected by the accelerator opening detecting means is maximum.

Abstract: A vehicle drive motor control system is provided, which, when a vehicle drive motor is in a locked state, may urge a driver to make a switch from actuation of an accelerator to actuation of a brake, thereby preventing thermal damage to coils inside the motor. The vehicle drive motor control system is capable of, when a vehicle drive motor is in a locked state as a result of actuating an accelerator, making the vehicle slowly move backward (or providing other stimulus to the driver) by decreasing a maximum drive torque value. This may effectively cause the driver to make the switch from actuation of the accelerator to actuation of the brake.

Abstract: The present invention provides a vibration measurement method and apparatus utilizing a self-mixing type laser Doppler vibrator meter. The vibration measurement method includes steps of: oscillating a laser beam of a predetermined wavelength and applying the laser beam to an object to be measured; mixing the reflected laser beam from the object and the oscillated laser beam for outputting a beat wave; calculating ratio of a beat wave amplitude for the turning point of the vibrating object, with respect to a predetermined reference amplitude; and calculating a displacement amount for the turning point of the vibrating object, according to the calculated ratio. This enables to detect the vibration of the object to be measured, with a high accuracy.

Abstract: The present invention discloses a vibration measurement method and apparatus using a self-mixing type laser Doppler vibration meter. The vibration measurement method according to the present invention comprises: an inclination value calculation step S3 for calculating an ascending inclination and a descending inclination for each beat wave; and a turning point identification step S4 for identifying the turning point of a vibrating object according to the inclination change along the time axis.

Abstract: The present invention provides a vibration measurement method and apparatus capable of accurately measuring displacement even if the displacement is very small. The vibration measurement method according to the present invention comprises: a laser beam application step (step S1) for applying a laser beam of a first wavelength to an object to be measured; a beat wave generation step (step S2) for mixing a laser beam of a second wavelength which is different from the first wavelength and the return beam reflected from the object to be measured; and a vibration information output step (step S3) for outputting the beat wave thus generated as a vibration information of the object to be measured.