摘要:
An apparatus for controlling steering of wheels of a vehicle comprises a control means, a driving means, and an actuator means. The control means comprises a feed forward signal operating means, a feed back signal operating means for generating signals for variables representing vehicle behaviors and output from a vehicle behavior sensor, and a control signal operating means for calculating a difference or sum of the signals output from the feed forwad and feedback signal operating means. The feed forward signal operating means comprises a steering angle signal circuit, a steering angular velocity signal operating circuit, a steering angle signal operating circuit having a first coefficient circuit for multiplying a steering angle signal with a coefficient, and an adder for adding the outputs from the steering angle signal circuit, the steering angle signal operating circuit, and the steering angular velocity operating circuit. A behavior correction capacity against a side wind or disturbance is very high, and a steering system can be controlled to shorten the response time for changes in vehicle behaviors with respect to a steering input, thereby providing optimal steering. The control means further comprises a gain changing means to supply optimal coefficients to the feed forward and feedback signal operating means.
摘要:
A vehicle driving condition detection device is adapted to detect a vehicle running along a banked or laterally sloping road, as well as a lateral acceleration, and sideslip angle with good accuracy. The sideslip angle is estimated at a vehicle-body sideslip angle estimating circuit based on a steering angle &dgr;f, a lateral acceleration ÿ, a yaw rate {dot over (&thgr;)}, and a vehicle speed V. In addition, using a differentiating device, the estimated sideslip angle is differentiated to calculate a slip angular velocity. A subtracting device is provided at which a deviation is calculated between the slip angular velocity and a slip angular velocity detected at a slip angular velocity calculating circuit. The deviation can detect a banked or laterally sloping road due to the fact that the detected slip angular velocity at the slip angular velocity calculating circuit includes the gravity acceleration component that depends on the slope or bank of the road. Upon detecting a banked or sloping road, a deviation &Dgr;ÿ (={dot over (&thgr;)}·V−ÿ) is outputted from a switching device, and at a subtracting device the detected lateral acceleration ÿ is corrected by being subtracted with the deviation &Dgr;ÿ. On the basis of the resultant or corrected lateral acceleration ÿ, the vehicle-body sideslip angle is estimated. Such an estimation is made irrespective of the slope or bank of the road.
摘要:
An oil separator has a container main body and an flow channel. A partition wall member faces the opening of the flow channel and extends along a wall of the container main body. An upper end member seals the space between the upper end of the partition wall member and the container main body. A side end member seals a space between one side end of the partition wall member and the wall of the container main body. A gap between the partition wall member and the wall of the container main body is narrower than an inner diameter of the flow channel and is largest at an open side end. An outer circumference of the partition wall member is longer than half of the inner diameter of the flow channel and shorter than half of the circumferential length of the inner wall of the container main body.
摘要:
Disclosed is a vehicle charging system that includes a plurality of primary self-resonance coils provided on a road side and a plurality of secondary self-resonance coils provided on a vehicle. Power is fed from the primary self-resonance coils to the secondary self-resonance coils. Each primary self-resonance coil has a different resonance frequency from the adjacent primary self-resonance coils. Each secondary self-resonance coil has a different resonance frequency from the adjacent secondary self-resonance coils.
摘要:
A battery state estimating unit estimates an internal state of a secondary battery in accordance with a battery model equation in every arithmetic cycle, and estimates a charging rate and a battery current based on a result of the estimation. A parameter estimating unit obtains a battery current measured by a sensor as well as the charging rate and the battery current estimated by the battery state estimating unit. The parameter estimating unit estimates a capacity deterioration parameter such that a rate of change in difference (estimation error) between a summed value of an actual current and a summed value of an estimated current with respect to the charging rate is minimized. A result obtained by estimating the capacity deterioration parameter is reflected in the battery model by the battery state estimating unit.
摘要:
A mechanical seal that prevents deposition of a degradation material generated on a sliding interface is to be provided. In a mechanical seal including a sleeve that rotates with a rotating shaft, a seal cover fixed to a housing, a rotating ring attached to the sleeve and a fixed ring attached to the seal cover and disposed in sliding-contact with the rotating ring via a sliding interface perpendicular to the rotating shaft scraping member is provided on the sleeve at a position close to an inner edge of the sliding interface so as to remove a degradation material from the inner edge of the sliding interface.
摘要:
A screw compressor includes a pair of male and female screw rotors which meshes with each other, where a casing storing the pair of screw rotors is divided into a discharge opening neighborhood portion including at least a discharge opening and an other portion other than the discharge opening neighborhood portion, the discharge opening neighborhood portion is configured so as to be removable from the other portion, further, the casing is divided, by two dividing surfaces orthogonal to rotor shafts, into three portions including a rotor casing around the pair of screw rotors, a discharge casing on a side of the discharge opening, and a suction casing on a side of a suction opening, and the discharge opening neighborhood portion is formed by dividing the rotor casing, and is configured so as to be removable from the dividing surface on the side of the discharge opening of a divided rotor casing. According to this configuration, the number of man-hours required for production thereof is reduced, and if operation conditions change, the size of a discharge opening can be easily changed.
摘要:
Power is contactlessly supplied from a power transmitting portion to a power receiving portion. A transmitting efficiency detecting portion detects the transmitting efficiency, and a determining portion determines whether the transmitting efficiency is equal to or greater than a specified value. If the transmitted efficiency is less than the specified value, an obstruction may be present so power temporarily stops being transmitted. Power is then periodically transmitted with a minute power and the efficiency is detected. If the efficiency is equal to or greater than the specified value, power starts to be transmitted again with regular power.
摘要:
A power frequency distribution predicting unit predicts the power frequency distribution of a vehicle in a case where the vehicle travels a route with reference to the history of the vehicle power Pv when the vehicle traveled the route in the past. An operation condition setting unit sets the range of the required vehicle power Pv0 to operate the engine as an engine operation condition for controlling the energy balance between generated power and generated electric power of an electric rotating machine in a case where the vehicle travels the route to be at a preset value according to the power frequency distribution predicted by the power frequency distribution predicting unit. An operation control unit controls the operation of the engine according to the range of the required vehicle power Pv0 to operate the engine set by the operation condition setting unit.
摘要:
A battery state estimating unit estimates an internal state of a secondary battery according to a battery model equation in every arithmetic cycle, and calculates an SOC based on a result of the estimation. A parameter characteristic map stores a characteristic map based on a result of actual measurement performed in an initial state (in a new state) on a parameter diffusion coefficient and a DC resistance in the battery model equation. The parameter change rate estimating unit estimates a DC resistance change rate represented by a ratio of a present DC resistance with respect to a new-state parameter value by parameter identification based on the battery model equation, using battery data measured by sensors as well as the new-state parameter value of the DC resistance corresponding to the present battery state and read from the parameter characteristic map.