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| 1. Employment of step motor for actuator
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| 2. Fast response to micom control
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| 3. Low operating error
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| 4. Accurate position control with simple control devices
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| 1. No additional driving circuit for containing embeded control curcuit.
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| 2. High vibration and noise characteristic
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| 3. High start response
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| 4. Covering wide range of air volume
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| 1. Low noise and slim design by employing flat coil
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| 2. Low cogging with coreless type
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| 3. Driven by only power input for containing embeded control curcuit. |
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| 1. High trust by converting rotation of motor to linear motion of screw shaft
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| 2. Low error and no error accumulation by employing step motor
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| 3. High response in starting, stopping and reversing of motor
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| 4. Maintaining stop position by motor torque without additional devices
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| 5. Trust and velocity control of valve
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| 6. Simple driving system by open loop control
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| 1. Controling the level of head lamp against the change of vehicle's height
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| 2. Employing the step motor as actuator
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| 3. Long life over 1 million cycle
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| 4. Controlling stroke in proportion with the input pulse signal
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| 5. No accumulated error in stroke
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| 6. High response in starting, stopping and reversing of actuator regardless of sudden change
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| of vehicle's height
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| 7. No need additional stopper
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| 1. Rotation angle is proportional perfectly to input signal. |
| 2. Angular error per 1 step is little and it is not accumulated. |
| 3. Response as starting, stopping and clock(counter clock) rotation is very good. |
| 4. Rrotation can be controled by digital signal and system circuit is very simple. |
| 5. It is possible to drive with low acceleration when motor shaft is connected with the other load directly. |
| 6. Stop positioning could be controled without break system. |
| 7. Rotation speed is changed in proportional to pulse signal into the step motor. |
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| 1. Electric and mechanic noise is lowl. |
| 2. No need for maintenance with high reliability. |
| 3. High speed is possible. |
4. High density is possible (Simplification is possible) |
5. Adapt easily for multi-function of machine (Fixed speed control, changing speed control etc.) |
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| 1. Accurate movement of the actuator by the order of an ECU. |
| 2. Check fail situation of the actuator by using Feedback Sensor. |
| 3. Decreased ECU's load & increased reliability of the Actuator by inserting Motor Driver in it. |
| 4. Only an ECU needs to be newly developped for another models. |
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| 1. 7% of fuel efficiency improvement compare with mechanical thermostat. |
| 2. Decrease exhaust gas. |
| 3. Improved modulous of a machine. |
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| 1. Angular error per 1 step is little so that valve leakage is little. |
| 2. Little vibration & noise while clock & counter clock rotation. |
| 3. Improved modulous of a machine. Response as starting, stopping and clock(counter clock) rotation |
| is very good. |
| 4. Valve body has designed with 100% airtight. |
| 5. Valve controls the refrigent and leakage well. |
| 6. Less electricity consumption. |
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| 1. Able to operate with low current. |
| 2. Fast response. |
| 3. Able to applicate to small products due to the small size & light weight. |
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| 1. STEPPING MOTOR to operate the valve |
| 2. To control the refrigerant flow proportionally |
| 3. To input pulse to STEPPING MOTOR from external circuit, enables ideal refrigerant flow precisely |
| 4. Refrigerant flow control valve by 2-2 phase pulse motor(fuzzy control is available, developing |
| separate drive circuit is needed) |
| 5. Minuteness control is available due to the partition of 1400 or 2000 from opening to shutting. |
| 6. Either air cooling or heating is available. |
| 7. Various kinds of refrigerant gas is available(R410A, R134A, etc.) |
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| 1. Adapted STEPPING MOTOR and decelerator |
| 2. Increase efficiency of refrigerator
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| 3. Less noise and vibration while rotating |
| 4. Less leakage of refrigerant by regular step angle when it fully closed |
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| < NON COIL SPRING TYPE > |
| · Fitst, it is possible to open the shutters in the range of 2.5[V] |
| · Second, it advances the reliability standard. |
| · Third, it cut down on expenses by compact design |
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