Digital servo controller
Electro-hydraulic servo dynami- static fatigue testing machine Model PCA-8005 dynamic servo M&C board
This product adopts the computer plug-in design, PCI bus management, Set a variety of analog sensor amplifier, A/D acquisition, digital sensor acquisition, PID closed loop control in one.
Functional characteristics
Servo control
Ø Three closed loop control modes of force, displacement and strain.
Ø Closed loop control frequency：5000Hz（update frequency）
Ø Control accuracy：±0.1%
Ø Signal generator frequency：0~1000 Hz
Ø Control waveform：Sine wave, triangle wave, trapezoidal wave, Fang Bo, oblique wave combination waveform, and the external signal input.
Ø Automatic regulating function with precise amplitude.
Ø Can control the servo motor, servo valve, proportional valve, etc..
3 way analog sensor measurement
A. 2 way bridge sensor measurement, can also be measured with a ±5V large signal sensor.
Ø Bridge Precision power supply for：±5V Dual power supply
Ø Sampling frequency：10kHz
Ø Effective sampling resolution：±50000 yard
Ø Signal pass band：＞1kHz
Ø Measurement accuracy：be better than 1/1000（Indication value），1/10000（full scale）。
B. 1 wayl analog measurement channel——LVDT（displacement transducer）measurement，can also be measured with a ±5V large signal sensor.
Ø Sensor driven——for 4 kHz, ±3V AC dual power drive
Ø Sampling frequency：10 kHz
Ø Effective sampling resolution：±100，000 yard
Ø Signal pass band：＞10~1000 Hz
Ø Measurement accuracy：be better than 0.2%
4 way digital sensor measurement
A. 3 way measurement channel，digital sensor measurement of AB phase and phase difference of 90 degree for photoelectric encoder, grating ruler, etc.
Ø 4 frequency multiplication phase discrimination.
Ø Input signal：2MHz。
B. 1 way digital measurement channel，measurement of MTS and other digital hysteresis telescopic sensors。
Control output： three types of control output（Optional）
(1).±10V analog output
Ø Using 16 bit DAC
Ø Output frequency：＞4 kHz
(2).Frequency output：
Ø Using frequency and direction signals
Ø Output frequency：0~10 kHz。
(3) Pulse width signal (PWM) output：
Ø Cycle：1ms
Ø pulse width：resolution is 10nS
Oil source control auxiliary control and protection alarm function
A. Auxiliary control.
Ø Oil pump stop, start.
Ø High pressure and low pressure conversion of oil source system pressure.
B. Protection and alarm function.
Ø Oil temperature.
Ø Lower tank level.
Ø Oil filter blocking.
