Abstract: Provided is an electric-powered vehicle in which a motor can be driven with a more appropriate torque value for a given situation. This electric-powered vehicle is provided with an electric motor that drives a vehicle wheel, and a control unit that controls the electric motor on the basis of a torque instruction including an instructed torque value for driving the electric motor with a prescribed torque, the control unit having a torque value control unit that decides a prescribed coefficient on the basis of the instructed torque value and a correlating value of the actual speed of the electric motor, and that outputs to the electric motor a torque drive instruction including an appropriate torque value obtained by multiplying the instructed torque value by the prescribed coefficient.

Abstract: A vehicle travel control device sets a first travel state in which a vehicle is caused to travel only by an internal combustion engine and a second travel state in which the vehicle is caused to travel by the internal combustion engine and an electric motor. The first travel state and the second travel state are switched to each other on the basis of vehicle information including the depression amount of an accelerator pedal. When a remaining electric power amount detected by a remaining electric power amount detection unit is less than a first predetermined value, a reaction force application unit sets a first accelerator pedal depression amount threshold at which the reaction force of the accelerator pedal is increased just before the switching from the first travel state to the second travel state.

Abstract: A vehicle travel control device sets a first travel state in which a vehicle is caused to travel only by an internal combustion engine and a second travel state in which the vehicle is caused to travel by the internal combustion engine and an electric motor. The first travel state and the second travel state are switched to each other on the basis of vehicle information including the depression amount of an accelerator pedal. When a remaining electric power amount detected by a remaining electric power amount detection unit is less than a first predetermined value, a reaction force application unit sets a first accelerator pedal depression amount threshold at which the reaction force of the accelerator pedal is increased just before the switching from the first travel state to the second travel state.

Abstract: [TASK] The wheel alignment of rear wheels can be properly set without using an alignment tester if the rear wheels are equipped with a rear wheel toe angle control device. [SOLUTION] In a calibration drive control, an ECU (12) actuates electric actuators (11) until the front wheel steering angle (?f) becomes zero or the rear wheel toe angles (?r) are symmetric to each other (steps S3 and D4) to thereby achieve a symmetric toe angle position (Ssym) (step S5). Then, the ECU (12) actuates the electric actuators (11) from the symmetric toe angle position (Ssym) by a same amount so as to cause the rear wheel toe angles to be a neutral value, and a reference position (S0) to be substantially equal to a standard operational position (Sstd) or an axial force (AF) to be substantially equal to a standard axial force (AFstd) (step S7). At this time, the operational position detected value (Sdtc) may be reset as the reference position (S0) (step S10).

Abstract: The present invention provides a rear wheel steering angle controlling device for vehicles comprising: a rear wheel steering mechanism (5R, 5L) for changing a rear wheel steering angle; a front wheel steering angle detector (9) for detecting a front wheel steering angle (?f); a vehicle velocity detector (10R, 10L) for detecting a vehicle velocity (V); a feedforward rear wheel steering angle control target value setting unit (21) for setting a feedforward control target value (?rFF) of said rear wheel steering angle according to said front wheel steering angle, said vehicle velocity, a steering yaw rate transfer function property (G?0) of the vehicle without a rear wheel steering angle control, and a prescribed reference steering yaw rate transfer function property (Gideal); and a controlling device (11) for controlling said rear wheel steering mechanism according to said feedforward rear wheel steering angle control target value; wherein a steady-state property of said reference steering yaw rate transfer fun

Abstract: An accelerator pedal device for a vehicle, performing a pedal reaction force control method. The accelerator pedal device is provided with an engine speed detection unit that detects the engine speed (Ne) and a reaction force control unit that controls, on the basis of the engine speed (Ne), a pedal reaction force (Fr) applied by a reaction force application unit. The reaction force control unit limits the reduction ratio of the pedal reaction force (Fr) when the reduction ratio of the engine speed (Ne) is greater than or equal to a predetermined value.

Abstract: Provided is a vehicle motion stability control system that combines the VSA and RTC devices in a favorable manner, and is able to effectively control the behavior of the vehicle over an entire operating range including an extreme operating region and a normal operating region. An output of the RTC is transformed by a certain transfer function, and the front wheel steering angle ?f inputted to the actual vehicle model for the first control device (VSA) is modified according to the output of the transfer function. It means that the input front wheel steering angle is modified according to the thrust angle or toe angle of the RTC. Thereby, a harmonized control of the VSA and RTC is enabled, and such a harmonized combination can be effected without making changes to the structure of an existing VSA.

Abstract: Provided is a rear wheel toe angle control system that can prevent the impairment of the tracking performance of the electric actuator and enable the rear wheel toe angle control system to ensure the stability of the vehicle even when the electric actuator for steering the rear wheel according to the operating condition of the vehicle is subjected to an axial force. An ECU (12) serving as a rear wheel toe angle control unit for variably controlling the rear wheel toe angle (?r) of the motor vehicle (V) by using an electric actuator (11) is provided with a duty ratio correcting unit (25) that corrects the target duty ratio (Dtgt) for achieving the target rear wheel toe angle (?rtgt) according to the load condition of the electric actuator (11) that depends on the lateral acceleration (Gy) of the motor vehicle (V).

Abstract: In a vehicle driveability control system for determining a control variable that is applied to a vehicle for a given control input including a front wheel steering angle according to a response of a vehicle model (10) to the given input, a parameter of the vehicle model is changed according to an output of a vehicle operator skill determining unit (14). Thereby, the vehicle driveability control system can provide a driving property that suits the driving skill of the particular vehicle operator, and can satisfy vehicle operators of all skill levels. In particular, if the vehicle operator is skilled enough to cope with emergency situations, the vehicle is enabled to respond to a quick input with a high responsiveness. Also, the control system is able to adapt itself to an improvement in the skill of a vehicle operator over time.

Abstract: Generally, the toe angle target speed limiting unit (84A) adds a toe angle target value ?T2P subjected to the primary delay to the result of a min-max processing the tracking error ??T1A by an adder (58A) to output it as a toe angle target value ?T2A to a target current calculating unit (86). However, in this toe angle target speed limiting unit (84A), a switching control (steering direction change control) for generating a maximum value ??Tmax as the toe angle target change quantity ??T2 and a hold control are made when a neutral position of the toe angle target value ?T2A which is prior to the toe angle command value ?T1 which is reached.

Abstract: A steering system for rear wheels of a vehicle without a dead zone in the vicinity of the steering wheel zero. The steering system includes a steering controller and control units that control the rear wheels to be steered in accordance with the steering angle of the steering wheel. The steering system performs a reduction control to provide a smaller steering control amount for the rear wheels in a range where a steering angle becomes smaller than a predetermined value, compared to a steering control amount for the rear wheels in the other ranges of the steering angle. When an angle speed of the steering angle becomes greater than a predetermined value, the steering system performs no reduction control or the reduction control with less reduced steering control amount for the rear wheels even in the range where the steering angle becomes smaller than the predetermined value.

Abstract: A steering controller for an electric power steering device 110 includes a base signal computing part 51 for computing a base signal DT in accordance with at least the steering torque; a damper compensation signal computing part 52 for computing a damper compensation signal in accordance with an angular velocity of an electric motor 4 or a speed of steering wheel turn; and an inertia compensation signal computing part 53 for compensating inertia and viscosity in the steering unit. The electric motor is driven by a target signal IM1 obtained by compensating the base signal with a damper compensation signal and an inertia compensation signal, to provide a steering auxiliary force. The target signal of the auxiliary torque is compensated so that a difference between a reference self-aligning torque of front wheel in a front wheel steering vehicle and a self-aligning torque of front wheel in an all-wheel steering vehicle is provided to a driver as a responsive feeling from the steering torque.

Abstract: Generally, the toe angle target speed limiting unit (84A) adds a toe angle target value ?T2P subjected to the primary delay to the result of a min-max processing the tracking error ??T1A by an adder (58A) to output it as a toe angle target value ?T2A to a target current calculating unit (86). However, in this toe angle target speed limiting unit (84A), a switching control (steering direction change control) for generating a maximum value ??Tmax as the toe angle target change quantity ??T2 and a hold control are made when a neutral position of the toe angle target value ?T2A which is prior to the toe angle command value ?T1 which is reached.

Abstract: The main calculation section (37a) of a toe angle alteration control ECU (37) in a vehicle control system receives target toe angles ?TL and ?TR. from a steering control ECU (130) and controls a motor (31L) for changing the toe angles of a left rear wheel and a motor (31R) for changing the toe angle of a right rear wheel independently. Stroke sensors (38L, 38R) detect actual toe angles ?L and ?R and inputs to the judging portion (85) of actuations of the sub calculation section (37c). In accordance with a pre-stored judgment table (85a), the judging portion (85) of actuations calculates an allowable actuation range, which is a combination of the toe angles ?L and ?R of the left-and-right rear wheels depending on vehicle speed VS, and judges whether the actuation of the motor (31L, 31R) is suitable for the turning of a vehicle or not depending on whether the actual toe angles ?L and ?R. is within the allowable actuation range or not.

Abstract: An accelerator pedal device for a vehicle, performing a pedal reaction force control method. The accelerator pedal device is provided with an engine speed detection unit that detects the engine speed (Ne) and a reaction force control unit that controls, on the basis of the engine speed (Ne), a pedal reaction force (Fr) applied by a reaction force application unit. The reaction force control unit limits the reduction ratio of the pedal reaction force (Fr) when the reduction ratio of the engine speed (Ne) is greater than or equal to a predetermined value.

Abstract: A toe angle changing control ECU for controlling a toe angle of wheels of a vehicle. The toe angle changing control ECU includes: a straight traveling state judging section for judging whether or not the vehicle is in a; a memory for storing the toe angle of the wheels while the vehicle is in the straight traveling state; and a toe angle setting section for setting the wheels to the toe angle stored in the memory when the straight traveling state judging section judges that the vehicle is in the straight traveling state. While in the straight traveling state, the wheels are set to a toe angle at which the wheels are substantially parallel to the longitudinal direction of the vehicle, reducing the rolling resistance of the wheels, and improving fuel consumption.

Abstract: The present invention provides a rear wheel toe angle variable control system-equipped vehicle that is capable of assisting the steering of the front wheels by a power steering system mounted therein without deteriorating the steering feeling experienced by the vehicle operator even when the rear wheels have been steered.

Abstract: [TASK] The wheel alignment of rear wheels can be properly set without using an alignment tester if the rear wheels are equipped with a rear wheel toe angle control device. [SOLUTION] In a calibration drive control, an ECU (12) actuates electric actuators (11) until the front wheel steering angle (?f) becomes zero or the rear wheel toe angles (?r) are symmetric to each other (steps S3 and D4) to thereby achieve a symmetric toe angle position (Ssym) (step S5). Then, the ECU (12) actuates the electric actuators (11) from the symmetric toe angle position (Ssym) by a same amount so as to cause the rear wheel toe angles to be a neutral value, and a reference position (S0) to be substantially equal to a standard operational position (Sstd) or an axial force (AF) to be substantially equal to a standard axial force (AFstd) (step S7). At this time, the operational position detected value (Sdtc) may be reset as the reference position (S0) (step S10).

Abstract: A toe angle changing control ECU for controlling a toe angle of wheels of a vehicle. The toe angle changing control ECU includes: a straight traveling state judging section for judging whether or not the vehicle is in a; a memory for storing the toe angle of the wheels while the vehicle is in the straight traveling state; and a toe angle setting section for setting the wheels to the toe angle stored in the memory when the straight traveling state judging section judges that the vehicle is in the straight traveling state. While in the straight traveling state, the wheels are set to a toe angle at which the wheels are substantially parallel to the longitudinal direction of the vehicle, reducing the rolling resistance of the wheels, and improving fuel consumption.

Abstract: Provided is a rear wheel toe angle control system that can prevent the impairment of the tracking performance of the electric actuator and enable the rear wheel toe angle control system to ensure the stability of the vehicle even when the electric actuator for steering the rear wheel according to the operating condition of the vehicle is subjected to an axial force. An ECU (12) serving as a rear wheel toe angle control unit for variably controlling the rear wheel toe angle (?r) of the motor vehicle (V) by using an electric actuator (11) is provided with a duty ratio correcting unit (25) that corrects the target duty ratio (Dtgt) for achieving the target rear wheel toe angle (?rtgt) according to the load condition of the electric actuator (11) that depends on the lateral acceleration (Gy) of the motor vehicle (V).