1. An electric power steering apparatus for a vehicle, comprising:
a first auxiliary steering unit for assisting with steering power while rotating a steering shaft in a forward or reverse direction with a driving power of a first motor;
a second auxiliary steering unit for assisting with steering power while sliding a rack bar in one or an opposite direction with a driving power of a second motor;
a torque sensor for detecting a rotary torque of the steering shaft;
a speed sensor for detecting a speed of the vehicle; and
an electronic control unit for transmitting a target current value control signal to the first motor and the second motor respectively in response to input signals input from the torque sensor and the speed sensor, respectively. 20
2. The electric power steering apparatus of claim 1, wherein the first auxiliary steering unit comprises:
a first reducer including a worm wheel connected to the steering shaft to be rotated, and a worm shaft engaged with the worm wheel to rotate the worm wheel connected to the steering shaft; and
a first motor for driving the worm shaft in a forward or reverse direction in response to a control signal input from the electronic control unit.
3. The electric power steering apparatus of claim 2, wherein the second auxiliary steering unit comprises:
a ball nut coupled to an outer periphery of the rack bar via balls to slide the rack bar in one or an opposite direction while being rotated;
a second reducer including a nut pulley coupled to an outer side of the ball nut and to which a belt is coupled, and a motor pulley is connected to the nut pulley and the belt; and
a second motor coupled to the motor pulley to drive the motor pulley in a forward or reverse direction in response to a control signal input from the electronic control unit.
4. The electronic power steering apparatus of claim 3, wherein the electronic control unit transmits a target current value control signal to the first motor and the second motor in response to an input signal input from the torque sensor, and stops transmission of the target current control signal to the second motor when an input signal value input from the speed sensor is larger than a set vehicle speed value.
5. The electronic power steering apparatus of claim 3, further comprising a weight mode switch for selecting a high weight mode and a low weight mode according to a weight of the vehicle and transmitting the selected mode to the electronic control unit.
6. The electronic power steering apparatus of claim 5, wherein the electronic control unit increases a target current value control signal transmitted to the second motor when the input signal input from the weight mode switch corresponds to the high weight mode, and stops transmission of a target current value control signal from the second motor when an input signal value input from the speed sensor is larger than a set vehicle speed value.
7. The electric power steering apparatus of claim 5, wherein the electronic control unit stops transmission of a target current value control signal to the second motor and increases a target current value control signal to the first motor when the input signal input from the weight mode switch corresponds to the low weight mode, and decreases a target current value control signal to the first motor when an input signal value input from the speed sensor is larger than a set vehicle speed value.
8. The electric power steering apparatus of claim 3, further comprising a gear position sensor for detecting a position of a transmission gear and transmitting the detected position to the electronic control unit.
9. The electric power steering apparatus of claim 8, wherein when an input signal input from the gear position sensor corresponds to a parking position or a rear gear position, the electronic control unit increases a target current value control signal transmitted to the first motor and the second motor.
10. The electric power steering apparatus of claim 8, further comprising a weight mode switch for selecting a high weight mode and a low weight mode according to a weight of the vehicle and transmitting the selected mode to the electronic control unit.
11. The electric power steering apparatus of claim 10, wherein when the input signal input from the gear position sensor corresponds to a parking position or a rear gear position and the input signal input from the weight mode switch corresponds to a high weight mode, the electronic control unit increases a target current value control signal transmitted to the first motor and the second motor.
12. The electronic power steering apparatus of claim 10, wherein when the input signal input from the gear position sensor corresponds to a parking position or a rear gear position and the input signal input from the weight mode switch corresponds to a low weight mode, the electronic control unit stops transmission of a target current value control signal to the second motor and increases a target current value control signal to the first motor.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method of manufacturing toner, comprising:
discharging a toner constituents liquid from multiple nozzles to form liquid droplets; and
solidifying the liquid droplets into toner particles,
the multiple nozzles satisfying the following formula:
2.5\u2266pd \u22667.5
wherein d represents an outlet diameter of each nozzle and p represents an interval between two nozzles,
the discharging further comprising:
vibrating the toner constituents liquid in a liquid column resonance liquid chamber having the multiple nozzles so that a standing wave is formed by liquid column resonance and,
the multiple nozzles being formed in a region including an antinode of the standing wave.
2. The method according to claim 1, the outlet diameter d being 4 to 15 \u03bcm.
3. The method according to claim 1, the toner constituents comprising a resin.
4. The method according to claim 1, at least one longitudinal end of the liquid column resonance liquid chamber having a reflective wall surface.
5. The method according to claim 1, the toner constituents liquid being vibrated at a frequency f represented by the following formula:
f=N\xd7c(4L)
wherein L represents a longitudinal length of the liquid column resonance liquid chamber, c represents a sonic speed in the toner constituents liquid, and N represents an integer.
6. The method according to claim 1, the toner constituents liquid being vibrated at a frequency f represented by the following formula:
N\xd7c(4L)\u2266f\u2266N\xd7c(4Le)
wherein L represents a longitudinal length of the liquid column resonance liquid chamber, Le represents a distance between a longitudinal end of the liquid column resonance liquid chamber on which a liquid common supply path is provided and a nozzle closest to said longitudinal end, c represents a sonic speed in the toner constituents liquid, and N represents an integer.
7. The method according to claim 6, the method further satisfying the following formula:
LeL>0.6.
8. The method according to claim 1, the toner constituents liquid being vibrated at a frequency f represented by the following formula:
N\xd7c(4L)\u2266f\u2266(N+1)\xd7c(4Le)
wherein L represents a longitudinal length of the liquid column resonance liquid chamber, Le represents a distance between a longitudinal end of the liquid column resonance liquid chamber on which a liquid common supply path is provided and a nozzle closest to said longitudinal end, c represents a sonic speed in the toner constituents liquid, and N represents an integer.
9. The method according to claim 1, the toner constituents liquid being vibrated at a frequency of 300 kHz or more.
10. The method according to claim 1, further comprising:
conveying the discharged liquid droplets by an airflow to an area where the liquid droplets are to be solidified.
11. The method according to claim 10, an initial discharge velocity of the liquid droplets being smaller than a speed of the airflow.
12. The method according to claim 1, the toner constituents liquid including an organic solvent, and the solidifying further comprising removing the organic solvent from the liquid droplets.
13. A method of manufacturing resin particles, comprising:
discharging a liquid including a resin from multiple nozzles to form liquid droplets; and
solidifying the liquid droplets into resin particles,
the multiple nozzles satisfying the following formula:
2.5\u2266pd\u22667.5
wherein d represents an outlet diameter of each nozzle and p represents an interval between two nozzles,
the discharging further comprising:
vibrating the liquid in a liquid column resonance liquid chamber having the multiple nozzles so that a standing wave is formed by liquid column resonance and,
the multiple nozzles being formed in a region including an antinode of the standing wave.
14. The method according to claim 13, the outlet diameter d being 4 to 15 \u03bcm.
15. The method according to claim 13, at least one longitudinal end of the liquid column resonance liquid chamber having a reflective wall surface.
16. The method according to claim 13, the liquid being vibrated at a frequency f represented by the following formula:
f=N\xd7c(4L)
wherein L represents a longitudinal length of the liquid column resonance liquid chamber, c represents a sonic speed in the liquid, and N represents an integer.