Plan- x1 meeting no. 4 – 27/04/10 at NCRA Auditorium, Pune GMRT SERVO SYSTEM PLAN X1 TARGET implements : 1a) Brushless drives 1b) PC-104 Servo computer 1c) Generic antenna Controller unit (GACB) 1d) Solid state interface logic– SSI 1e) Feed position system – 6U 9/11/20151dec 2008

9/11/2015dec 20082

Brushless drive … work planned for 2k8-9 9/11/2015dec One antenna system testing with test setup (simulating the actual dual drive of either azimuth or elevation axis) in progress in LAB. …..Completed in MTAC period 2010 both in: a) position loop mode b) Velocity loop mode. Overall position accuracy matches with the test report of Leopold

Installation and commissioning on antenna by end 2008 …….Documentation / computation of test plots/results in progress to arrive at performance parameters like a) bandwidth b) resonant frequency Two more antenna systems procurement, testing and installation by March 2009 ……. Purchase order placed in feb 2010 for 4 more systems

Brushless drive … work planned for 2k10-11 Test Large test setup by interfacing SSC to BLDC and later with PC-104 On successful completion of the above, test antenna - C04 with BLDC + PC- 104 Leave the unit at C04 for Observation and feedback from Engineering group / GTAC users. Assemble one antenna bldc system in a 19” rack for minimising RFI emanating from the drives. Test / Measure the RFI after the rack is assembled and submit for acceptance and approval for mass production

Block Diagram ….BLC configured in position loop

Posn.error = +/- 1.6sec

Block Diagram ….BLC configured in velocity loop

Summary of load velocities for different scale factors in Algorithm Analog i/p – to ADC Velocity cmd.Scale factor Load vel. In cnts/sec Load vel. In deg/min Remarks Velocity error 10 V V / ‘sec/s 10 V

Gear box being hauled up to the setup 9/11/201512dec 2008

Generic Antenna Board Functional Block Diagram PC104 Master PC104 Slave 104 lines in Parallel Addr/data bus buffers Addr/data bus buffers CPLD 2 CPLD 1 AIP section DIP section Encoder Interface AOP section DOP section SPI Interface QUAD UART CAN controller K/B,mouse VGA USB TCP/IP 3 x RS232 RS422/RS485 BLDC Drives PMDC Drives Field Sig. Field Sig. Field Sig. Sensors Front Panel (Maintenance) RS232 Add. lines Data lines

Generic Antenna Controller – GAC plan status and projections – 2k Generic Antenna Controller Board FY : Work done : Specification on a new integrated Generic antenna Controller board is finalisedthis year and a detailed design exercise was undertaken in active collaboration with BARC's Control and Instrumentation division. The design has been completed and frozen. PCB layout work with a vendor is in progress currently. It is expected to finalize the layout work by Sept The boards are expected to be populated by Oct 2010 and tests would start in Oct2010. Antenna tryouts are likely by the end of this financial year. 9/11/2015dec

Solid State Interlocks – SSI plan status and projections – 2k10-11 FY : Work Done : --- SSI systems were installed on antennas in this financial years, taking number of antenna with SSI to 22 including 1 prototype board. In addition, work was undertaken to get fresh PCBs ready for 10 antennnas and the population of these PCBs is in progress. It is expected to get 10 systems ready and tested in the coming financial year and install at least 08 systems on antennas, subject to availabilty of antennas during GTAC cycle. 9/11/2015dec

PC-104 FY : works planned / done Development of Graphic user Interface – GUI developed for monitoring, data logging from antenna base. Make RFI measurements and Cabinet vendor identification in progress Performance checks after installation for one GTAC cycle compensator extensively tested at C02, Antenna test plan report generated to validate the code during the antenna installation,added a state machine “calibrate” 9/11/2015dec

Pc-104 works planned 2k10-11 Extensive testing from CEB thro’ ABC Performance evaluation of pc-104 during GTAC observation….2 weeks Interfacing with BLDC at Rayshed/JOgshed with simulated load Actual interface with BLDC at antenna base and control from CEB Make RFI enclosure

Budget Utilisation in Lakhs(Rs) & proposed ActivityPlan 2k9-10ActualPlan 2k QTY Rs Lacs BLDC5 ants (150.00) 4 ants (145.78) 6 #( ) PC-104 & GACB 30 & 5 ants ( 25.00) Prototype ( 2.04) 10 # 5 #( ) BL Drive ( indig) nos( 20.00) Lab eqp.(10.00)( 4.70) Fps – 6U & Angle enc. 10ants &5# ( ) 10ants ( 6.90) 10 ants 5 # ( ) SSI15 ants22ants ( 2.00 ) 08 ants( 2.00) Lightning protection ant (4.00 ) NIL DC Servo Motor magnet 5 nos ( ) #( )

Thank you 9/11/2015April